GB2482354A

GB2482354A - Spectacles with adjustable interpupilary distance

Info

Publication number: GB2482354A
Application number: GB1014479.8A
Authority: GB
Inventors: John Derek Snelgrove
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-07-28
Filing date: 2010-09-01
Publication date: 2012-02-01
Anticipated expiration: 2030-09-01
Also published as: GB2482301A; GB201014479D0; GB201012598D0; GB2482354B

Abstract

A pair of spectacles has lens 30, including a hole 35 extending therethrough, a lens supporting member 10, defining a slit 13, configured to extend laterally across the front of a user's head, a first fastener 41, configured to extend through the slit, including a bore, and a second fastener 45, for insertion into the first fastener's bore. The first and second fasteners are configured to extend through the hole and the first fastener is configured for frictional engagement with the slit on insertion of the second fastener into the first fastener's bore. When the first fastener is passed through the slit it can be moved relative to the lens supporting member to register with a users interpupilary distance. The invention is suitable for use in developing countries where donated lenses can be adjusted for different users.

Description

SPECTACLES

This invention relates to a pair of spectacles. More specifically, but not exclusively, the invention relates to a modular assembly for spectacles.

The spectacles in the prior art require professional manufacturing with specialist equipment.

The manufacturing processes of the prior art ensure the spectacles are manufactured specifically to a person's eyeglass prescription. To ensure longevity, the spectacles are manufactured such that it is difficult or impossible to alter their original fit, without using the specialist equipment. The spectacles in the prior art are therefore limited to a single person, or at least to people with a particular eyeglass prescription. The manufacturing processes are also expensive, as they require specialist equipment.

In developing countries, many people cannot work due to vision defects and poor access to eye care professionals. Despite charitable drives to donate spectacles to the developing world, the spectacles may only be donated to a person with the same eyeglass prescription.

Furthermore, remanufacturing the spectacles in the developing country to create spectacles with the correct eyeglass prescription is not possible without the specialist equipment.

It is therefore desirable to provide spectacles that alleviate some or all of the above problems. In particular, it is desirable to provide spectacles that may be manufactured without specialist equipment.

According to a first aspect of the invention there is provided a pair of spectacles comprising a lens, including a hole extending therethrough, a lens supporting member, defining a slit, configured to extend laterally across the front of a user's head, a first fastener, configured to extend through the slit, including a bore, and a second fastener, for insertion into the first fastener's bore, wherein the first and/or second fastener is configured to extend through the hole and the first fastener is configured for frictional engagement with the slit on insertion of the second fastener into the first fastener's bore.

Advantageously, the present invention provides a pair of spectacles that may be manufactured and fitted without specialist equipment. For example, the lens supporting member may engage the lens by aligning the lens' hole with the slit and passing the first fastener through the hole and slit. The lens may then be positioned according to the user's pupiliary distance by moving the lens and first fastener relative to the lens supporting member. Once in position, the second fastener may be inserted into the first fastener's bore, which frictionally engages the first fastener with the slit and the hole. The lens is then securely fitted to the spectacles' lens supporting member.

The skilled reader will appreciate that the only equipment necessary to fit a pair of spectacles of the present invention is a drill, for making the hole in the lens. Once this has been made, the first and second fastener may securely position the lens in its correct place.

The spectacles of the present invention therefore alleviate the problems associated with the prior art, for example, the need for specialist equipment and manufacturers. The spectacles of the present invention are therefore particularly suited to be used in developing countries, where expensive equipment and specialist fitting are rare.

Preferably, the first and second fastener includes a head and a body, the first fastener including a bore extending longitudinally through the head and body. This provides a more secure fitting allowing the head to be pressed up against the lens supporting member or the lens.

The first fastener may include a first body portion and a second body portion, the first body portion configured to extend through the slit, for frictional engagement therewith on insertion of the second fastener into the first fastener's bore, and the second body portion configured to extend through the hole, for frictional engagement therewith on insertion of the second fastener into the first fastener's bore.

The spectacles may further comprise a pad arm, including a connector at a proximal end and a pad at a distal end, the connector defining an aperture with a profile complimentary to the first fastener's second body portion. Advantageously, the pad arm may be connected to the spectacles by inserting the first fastener's second body portion through the connector.

The first fastener's second body portion may be configured to extend through the hole and the connector aperture, and for frictional engagement therewith on insertion of the second fastener's body into the first fastener bore. Therefore, the pad arm may be securely fitted to the spectacles.

Preferably, the inner profile of the connector aperture and outer profile of the first fastener's second body portion are a complimentary star shape. Therefore, the pad arm may be connected to the first fastener in a plurality of configurations, i.e. the relative angle between the pad arm and the first fastener's major axis may be adjusted. This allows the user to position the pad on his/her nose after aligning the lens according to his/her pupiliary distance.

Furthermore, the inner profile of the connector aperture profile and the outer profile of the first fastener's second body portion may be a 16-point star. This allows the relative angle between the pad arm and the first fastener's major axis to be adjusted in 22.5° increments.

Preferably, the first fastener's head is concave. Therefore, the first fastener's head my engage the lens supporting member.

Alternatively, the first fastener's head includes two concave portions, such that each concave portion is configured to engage the lens supporting member on one side of the slit.

Preferably, the second fastener's head is tapered.

The lens may include a cutaway portion, for receiving the first and/or second fastener head.

Therefore, there is a greater contact area between the lens and the first and/or second fastener head.

The lens may include a cutaway portion, for receiving the connector. Therefore, there is a greater contact area between the lens and the connector.

Alternatively, the spectacles further include a resilient washer, for positioning between the lens and first or second fastener's head. Thus, reducing the pressure exerted on the lens by the first or second fastener's head.

Alternatively, the spectacles may further include a resilient washer, for positioning between the lens and connector. Thus, reducing the pressure exerted on the lens by the connector.

Preferably, the bore and the second fastener's body have complimentary threading.

According to a second aspect of the invention, there is provided a method of assembling a pair of spectacles having a lens, including a hole extending therethrough, a lens supporting member, defining a slit, configured to extend laterally across the front of a user's head, a first fastener, configured to extend through the slit, including a bore, and a second fastener, for insertion into the first fastener's bore, wherein the first and/or second fastener is configured to extend through the hole and the first fastener is configured for frictional engagement with the slit on insertion of the second fastener into the first fastener's bore, comprising the steps of passing the first fastener through the slit, moving the lens and first fastener relative to the lens supporting member to register with a user's pupilary distance, and inserting the second fastener into the first fastener's bore, wherein the first and/or second fastener extends through the hole.

Preferably, the first fastener's body includes a first body portion and a second body portion, the first body portion configured to extend through the slit, for frictional engagement therewith on insertion of the second fastener into the first fastener's bore, and the second body portion configured to extend through the hole, for frictional engagement therewith on insertion of the second fastener into the first fastener's bore, the spectacles further including a pad arm, including a connector at a proximal end and a pad at a distal end, the connector defining an aperture with a profile complimentary to the first fastener's second body portion, the method further comprising the step of passing the first fastener's second body portion through the connector aperture.

Advantageously, the inner profile of the connector aperture is complimentary to the outer profile of the first fastener's second body portion, the method further comprising the step of passing the first fastener's second body portion through the connector aperture such that the pad engages a user's nose.

Embodiments of the invention will now be described, by way of example, and with reference to the drawings in which: Figure 1 is a perspective view of a preferred embodiment of a pair of spectacles of the present invention; Figure 2 is a front view of a preferred embodiment of the spectacles of Figure 1; Figure 3 is an exploded perspective view of a fastening assembly of the spectacles of Figure 1; Figure 4 is a side cross-sectional view along line A-A of Figure 2, showing a first fastener and a second fastener disengaged; Figure 5 is a a side cross-sectional view along line A-A of Figure 2, showing the first fastener and the second faster engaged; Figure 6 is a side cross-sectional view of a fastening assembly of a second embodiment of a pair of spectacles of the present invention, showing a first fastener and a second fastener disengaged; Figure 7 is a side cross-sectional view of the fastening assembly of Figure 6, showing the first fastener and the second fastener engaged; Figure 8 is a side cross-sectional view of a fastening assembly of a third embodiment of a pair of spectacles of the present invention, showing a first fastener and a second fastener disengaged; Figure 9 is a side cross-sectional view of the fastening assembly of Figure 8, showing the first fastener and the second fastener engaged; Figure 10 is a side cross-sectional view of the fastening assembly of Figure 8, showing a lens including a cut-away portion and the first and second fastener disengaged; Figure 11 is a side cross-section view of the fastening assembly of Figure 8, showing the lens including a cut-away portion and the first and second fastener engaged; Figure 12 is a side cross-sectional view of the fastening assembly of Figure 8, showing a resilient washer between a second fastener's head and the lens and the first and second fastener disengaged; and Figure 13 is a side cross-sectional view of the fastening assembly of Figure 8, showing the resilient washer between the second fastener's head and the lens and the first and second fastener engaged.

A preferred embodiment of the present invention will now be described with reference to Figures 1 to 5.

Figures 1 and 2 illustrate a preferred embodiment of a pair of spectacles I of the present invention. The spectacles 1 include a lens holder 10, earpieces 20, lenses 30 and fastening elements 40. The lens holder 10 extends between the earpieces 20 and is hingedly connected thereto, as is known in the art.

The lens holder 10 includes a first and second rod 11, 12, extending between the two earpieces 20. The first and second rod 11, 12, which have a substantially square cross-section, define a slit 13. In this embodiment, the slit 13 extends between the two earpieces, i.e. laterally across the front of the user's head, and is broken in the centre of the lens holder 10 by a bridge 15, for engaging the user's nose. The lens holder 10 thus forms a lens supporting member, part of the fastening assembly which is described in more detail below.

The fastening assembly 40 is shown in greater detail in the exploded perspective view in Figure 3. The fastening assembly 40 includes a first fastener 41, the lens holder 10, the lens 30, a pad arm 43, and a second fastener 45.

The first fastener 41 includes a head 41 a, a first body portion 41 b and a second body portion 41c. The first fastener 41 includes a bore extending longitudinally through its centre.

In this embodiment, the first fastener's first body portion 41 b and the first and second rod 11, 12 of the lens holder 10 have a substantially square cross section, ensuring a complimentary fit when the first fastener's first body portion 41b is inserted through the slit 13. The skilled reader will understand that it is preferable for the first fastener's first body portion 41 b and the slit 13 to have complimentary dimensions, thus, in this embodiment, the slit is 1.5mm wide and the first fastener's first body portion 41 b has a 1.Smmxl.5mm cross section. The skilled reader will also understand that the lens holder 10 does not have to have a square cross section, rather, to be complimentary to the first fastener's first body portion 41 b with a substantially square cross section, the sides of the rods 11, 12 of the lens holder 10 that define the slit 13 are substantially flat.

The first fastener's head 41a is shaped to have a concave section for engaging the first and second rods 11, 12. Preferably, the edges of the first and second rods 11, 12 have curved edges to compliment the concave section of the first fastener's head 41a.

The lens 30 defines a hole 35 in a peripheral region thereof. The hole 35 is sized to accept the first fastener's second body portion 41c. Preferably, the first fastener's second body portion 41c has an outer profile of a 16-point star, with a 1.5mm diameter.

There is also provided a pad arm 43, including a pad 43a, arm 43b and connector 43c. In this embodiment, the connector 43c has an inner profile of a 16-point star. The inner profile is dimensioned such that it is complimentary to the outer profile of the first fastener's second body portion 41c. The first fastener's second body portion 41c may be inserted through the connector 43b in 16 different configurations such that the angle between the pad arm 43 and the first fastener's 41 major axis may be adjusted in 22.5° increments. Thus, the pad arm 43 may be aligned with a user's nose.

A second fastener 45 is also provided. The second fastener 45 includes a tapered head 45a and a body 45b. The second fastener's body 45b has complimentary dimensions to the bore of the first fastener 41, thus allowing the second fastener's body 45b to be inserted into the bore of the first fastener 41. More specifically, the dimensions of the first fastener's bore and second fastener's body 45b are chosen such that the first fastener 41 expands as the second fastener's body 45b is inserted.

The skilled reader will understand that the material choice of the first fastener's first and second body portions 41b, 41c must be such that it is resilient enough to expand, and to frictionally engage the lens holder 10. In this embodiment, the first fastener 41 is constructed out of plastic, and the lens holder 10 is constructed out of metal (such as stainless steel or titanium). Alternatively, the first fastener 41 is constructed out of a soft alloy, such as a platinum-silicon alloy.

In this embodiment, the first fastener's bore and the second fastener's body 45b include complimentary threading.

Figures 4 and 5 are cross sectional views through line A-A of Figure 2, illustrating the fastening assembly 40 of the preferred embodiment of the invention. The first fastener's first body portion 41b is inserted through the first and second rods 11, 12, and the first fastener's second body potion 41c is inserted through the pad arm's connector 43c, and then the lens' hole 35.

The first fastener 41 is sufficiently long such that it extends through all three components.

Once the required length of the first fastener's second body portion 41c is known, i.e. such that it extends to an outward surface of the lens 30, it may be cut to size. The second fastener's body 45b may then also be cut such that it extends from the second fastener's head 45a to the end of the first fastener's bore.

Figure 5 illustrates the second fastener 45 being inserted into the first fastener 41. In this configuration, the fastening assembly 40 is complete and the first fastener 41 has expanded to frictionally engage the lens holder 10, the lens 30 and the pad arm 43, in the required position. Furthermore, the second fastener's body 45b extends out of the first fastener's bore, which may be used as an attachment point for a further component.

Figures 6 and 7 illustrate a fastening assembly 50 of a second embodiment of the present invention. The second embodiment is substantially similar to the preferred embodiment described above, however, differs in the arrangement of elements in the fastening assembly 50. Like reference numerals have been used to describe the second embodiment.

In the second embodiment's fastening assembly 50, the first fastener's first body portion 41b is inserted through the first and second rod 11, 12, and the first fastener's second body portion 41c is inserted through the lens' hole 35 and then the pad arm's connector 43c. The first fastener's second body portion 41c and the second fastener's body 45b are cut to the required length, and the second fastener's body 45b is inserted into the first fastener's bore.

In the first and second fastening assembly 40, 50, the second fastener's head 45a is tapered. The outer diameter of the second fastener's head 45a is dimensioned equivalent to the outer diameter of the first fastener's second body portion 41c. Therefore, the skilled person will understand that as the second fastener's head 45a is inserted into the first fastener's bore, the second fastener's head 45a produces a greater outward force on the first fastener 41 than the second fastener's body 45b. Therefore, there is greater expansion of the portion of the first fastener's second body portion 41c in contact with the second fastener's head 45a, which in turn increases the frictional engagement between the first fastener's second body portion 41c and either the lens 30 or connector 43c (depending on the arrangement of components).

Figures 8 to 13 illustrate a fastening assembly 60 of a third embodiment of the present invention. Like reference numerals have been used to describe this embodiment.

As shown in Figures 8 and 9, the first fastener's second body portion 41 c is inserted through the pad arm's connector 43c and then the lens' hole 35. The second fastener 45 includes a head 45a, with a larger diameter than the lens' hole 35, such that the head 45a abuts the lens 30 when inserted into the first fastener's bore Figures 10 to 13 illustrate further features to protect the lens, in particular, when the lens has a large curvature. The curvature of the lens is exaggerated for illustrative purposes.

Figures 10 and 11 illustrate a lens 130 with a cutaway portion 132. The centre of the cutaway portion 132 aligns with the lens' hole 135 and is dimensioned complimentary to the second fastener's head 45a. Thus, as shown in Figure 11, when the second fastener's head 45a abuts the cutaway portion 132 of the lens 130, there is a greater contact area. This reduces the pressure exerted on the lens 130 and therefore reduces the likelihood of the lens 130 deforming or fracturing.

Figures 12 and 13 illustrate a resilient washer 47, positioned between the lens 230 and the second fastener's head 45a. The resilient washer 47 includes a hole 47a, complimentary to the first fastener's second body portion 41c. The first fastener's first body portion 41b is therefore inserted through the first and second rods 11,12, and the first fastener's second body portion 41c is inserted through the pad arm's connector 43c, the lens' hole 235 and the washer's hole 47a. The resilient washer 47 is constructed out of a material which is resilient and frictionally engages the lens 230 and/or second fastener's head 45a. Further resilient washers may be provided between the pad arm's connector 43c and the lens 230, between the first and second rod 11, 12 and the pad arm's connector 43c, and between the first fastener's head 41a and the first and second rod 11, 12. The resilient washer 47 also reduces the pressure exerted on the lens 230 and therefore reduces the likelihood of the lens 130 deforming or fracturing.

A plurality of additional features may be attached to the side arms 20, for example, coloured inserts, a flip out magnifier, a light source, a video camera, a 3d attachment, sunglasses, side shields, flip out mirror, head strap, Bluetooth (RTM) and hearing aids.

A method of assembling the spectacles 1 of the preferred embodiment of the present invention will now be described. The first fastener's first body portion 41b is inserted through the slit 13 and the first fastener's second body portion 41c is inserted through the pad arm's connector 43c and the lens' hole 35. The lens 30, pad arm 43 and first fastener 41 are moved laterally within the slit 13 to align with the user's pupilliary distance. If the pad arm 43 does not align with the user's nose, then the lens 30 is removed (whilst the first fastener 41 remains in position), and the angle between the pad arm 43 and the first fastener 41 is adjusted by virtue of the 16-point star profile by placing the pad arm's connector 43c on the first fastener's second body portion 41c at a different angle. The lens 30 is then placed on the first fastener 41.

The second fastener's body 45b is then inserted into the first fastener's bore, such that the first fastener 41 expands and frictionally engages the first and second rod 11, 12, the lens' hole 35, and the pad arm's connector 43c. The fastening assembly is then complete and the lens 30 and pad arm 43 and fixed in position on the spectacles according to the user's prescription and comfort requirements.

The skilled reader will understand that the first fastener's first and second body portions 41 b, 41c could be a single body (e.g. a single substantially square portion, configured to extend through the lens' hole 35, the slit 13 and the pad arm's connector 43c). Thus, a part of the substantially square portion will frictionally engage the lens holder 10, a part of the substantially square portion will engage the inner profile of the pad arm's connector 43c and a part of the substantially square portion will engage the lens' hole 35. Further, the pad arm's connector 43c inner profile of a 16-point star will allow for different angles between the pad arm 43 and the first fastener 41. The skilled person will understand that splitting the first fastener body into two portions, such that one is shaped to engage the lens holder 10 and one is shaped to engage the pad arm's connector 43c and the lens' hole 35 is preferable, as it allows a more secure fitting.

Furthermore, the first fastener's second body portion 43c could be omitted. In this arrangement, the first fastener's body includes a substantially square body extending through the slit 13 for frictionally engaging the lens holder 10 on insertion of the second fastener's body into the first fastener's bore. The second fastener's body 45b, lens' hole 35, pad arm's connector 43c and the first fastener's bore will therefore have complimentary dimensions, such that the second fastener's body may be inserted through the lens' hole 35, pad arm's connector 43c and first fastener's bore for frictional engagement therewith.

The skilled reader will understand that the further features to protect the lens, e.g. the cutaway portion 132 and the resilient washer 47, are optional features. However, they are preferable, especially when the lens has a relatively large curvature. The second fastener's head 45a or the pad arm's connector 43c may otherwise be pressed up against the lens.

The skilled reader will understand that the pad arm 43 does not need to be part of the fastening assembly. It is desirable to position it on the fastening assembly, as the lens 30 may be positioned according to the user's pupilliary distance, and then the angle of the pad arm 43 may be chosen such that the pad 43a abuts the user's nose. However, the pad arm 43 may otherwise be connected to the spectacles 1 by other means, for example, connected tothefirstorsecond rod 11, 12, ortothe bridge 15.

The skilled reader will also understand that the bridge 15 is optional. The bridge 15 provides structural rigidity to the lens holder 10 and reduces the effect of torsion. However, the bridge 15 reduces the scope of lateral movement of the fastening assembly along the slit 13. The bridge 15 may be omitted, thus providing a longer slit 13.

Furthermore, the first fastener's head 41a does not need to include a concave portion, for engaging the first and second rods 11, 12. Alternatively, the rod engaging portion may simply be flat, or it may include two concave portions, each for engaging either the first or second rod 11, 12.

The skilled reader will understand that the shapes and dimensions described above are merely examples, and variations are permissible within the scope of the present invention.

For example, the first and second rods 11, 12 may be circular or oval, and the concave portion/portions may be complimentary to the first and second rods 11, 12.

Furthermore, the slit 13 may be replaced with a plurality of holes along the axis of the lens holder 10. One of the benefits of the slit 13 is that it provides a great number of positions for the lenses, thus ensuring the user may align the lenses with his/her pupiliary distance. The skilled person will understand that this may be achieved by a plurality of holes along the axis of the lens holder. This would, however, reduce the number of positions available for the lenses.

In the embodiments described above, two lenses are provided (one for each eye). It is also permissible for a plurality of lenses to be provided on each fitting assembly 40. Therefore, a greater lens power may be achieved by placing lenses in series, or a bifocal arrangement of the lenses may be provided.

The skilled reader will understand that any combination of features is possible, without departing from the scope of the invention, as claimed.

Claims

CLAIMS1. A pair of spectacles comprising a lens, including a hole extending therethrough; a lens supporting member, defining a slit, configured to extend laterally across the front of a user's head; a first fastener, configured to extend through the slit, including a bore; and a second fastener, for insertion into the first fastener's bore, wherein the first and/or second fastener is configured to extend through the hole and the first fastener is configured for frictional engagement with the slit on insertion of the second fastener into the first fastener's bore.
2. Spectacles as claimed in Claim 1, wherein the first and second fastener includes a head and a body, the first fastener including a bore extending longitudinally through the head and body.
3. Spectacles as claimed in Claim 1 or 2, wherein the first fastener includes a first body portion and a second body portion, the first body portion configured to extend through the slit, for frictional engagement therewith on insertion of the second fastener into the first fastener's bore, and the second body portion configured to extend through the hole, for frictional engagement therewith on insertion of the second fastener into the first fastener's bore.
4. Spectacles as claimed in Claim 3, further comprising a pad arm, including a connector at a proximal end and a pad at a distal end, the connector defining an aperture with a profile complimentary to the first fastener's second body portion.
5. Spectacles as claimed in Claim 4, wherein first fastener's second body portion is configured to extend through the hole and the connector aperture, for frictional engagement therewith on insertion of the second fastener into the first fastener's bore.
6. Spectacles as claimed in either Claim 4 or Claim 5, wherein the inner profile of the connector aperture and the outer profile of the first fastener's second body portion are a complimentary star shape.
7. Spectacles as claimed in Claim 6, wherein the inner profile of the connector aperture and the outer profile of the first fastener's second body portion is a 16-point star.
8. Spectacles as claimed in any one of Claims 2 to 7, wherein the first fastener's head is concave.
9. Spectacles as claimed in any one of Claims 2 to 7, wherein the first fastener's head includes two concave portions, such that each concave portion is configured to engage the lens supporting member on one side of the slit.
10. Spectacles as claimed in any one of Claims 2 to 9, wherein the second fastener's head is tapered.
11. Spectacles as claimed in any one of Claims 2 to 9, wherein the lens includes a cutaway portion, for receiving the first or second fastener's head.
12. Spectacles as claimed in any one of Claims 3 to 9, wherein the lens includes a cutaway portion, for receiving the connector.
13. Spectacles as claimed in any one of Claims 2 to 9, further including a resilient washer, for positioning between the lens and first or second fastener's head.
14. Spectacles as claimed in any one of the Claims 3 to 9, further including a resilient washer, for positioning between the lens and connector.
15. Spectacles as claimed in any one of the preceding claims, wherein the bore and the second fastener's body have complimentary threading.
16. A method of assembling a pair of spectacles having a lens, including a hole extending therethrough, a lens supporting member, defining a slit, configured to extend laterally across the front of a user's head, a first fastener, configured to extend through the slit, including a bore, and a second fastener, for insertion into the first fastener's bore, wherein the first and/or second fastener is configured to extend through the hole and the first fastener is configured for frictional engagement with the slit on insertion of the second fastener into the first fastener's bore, comprising the steps of: passing the first fastener through the slit; moving the lens and first fastener relative to the lens supporting member to register with a user's pupilary distance; and inserting the second fastener into the first fastener's bore, wherein the first and/or second fastener extends through the hole.
17. A method as claimed in Claim 16, wherein the first fastener's body includes a first body portion and a second body portion, the first body portion configured to extend through the slit, for frictional engagement therewith on insertion of the second fastener into the first fastener's bore, and the second body portion configured to extend through the hole, for frictional engagement therewith on insertion of the second fastener into the first fastener's bore, the spectacles further including a pad arm, including a connector at a proximal end and pad at a distal end, the connector defining an aperture with a profile complimentary to the first fastener's second body portion, the method further comprising the step of: passing the first fastener's second body portion through the connector aperture.
18. A method as claimed in Claim 17, wherein the inner profile of the connector aperture is complimentary to the outer profile of the first fastener's second body portion, the method further comprising the step of: passing the first fastener's second body portion through the connector aperture such that the pad engages a user's nose.
19. A pair of spectacles substantially as herein described with reference to and as shown in any combination of the accompanying drawings.
20. A method substantially as herein described with reference to and as shown in any combination of the accompanying drawings.