CN201500105U

CN201500105U - Portable slit detection device

Info

Publication number: CN201500105U
Application number: CN 200920194201
Authority: CN
Inventors: 何明光
Original assignee: Zhongshan Ophthalmic Center
Current assignee: Zhongshan Ophthalmic Center
Priority date: 2009-09-07
Filing date: 2009-09-07
Publication date: 2010-06-09
Anticipated expiration: 2019-09-07

Abstract

The utility model discloses a portable slit detection device which comprises a portable slit lamp body in which a red LED light source is arranged, a composite lens for converting the light emitted by the red LED light source into even parallel light and a slit light knife for converting the even parallel light into slit light rays; a triple prism for converting the vertical slit light rays into horizontal light rays is arranged at the top end outside the lamp body; a switch for controlling the red LED light source is arranged on the lamp body; and the portable slit detection device further comprises a light-tight eye shade matched with the shape surrounding the eye part and capable of forming a dark room around the inspected eyeball, a magnifier with a calibrated scale is arranged on the eye shade and in the position corresponding to the eyeball, a light hole is formed on the bitamporal oblique plane of the eye shade, and the vertical plane of the triple prism is fitted with the bitamporal oblique plane of the eye shade in a matched manner. The utility model overcomes the problem existing in the incandescent lamp used for the slit lamp in the prior art and overcomes the defects that the dark room fails to be formed in the surrounding environment during the inspection, the size of the pupil is affected by the light rays, and therefore the inspection result is affected and has more accurate inspection effect.

Description

Portable crack checkout gear

Technical field

This utility model relates to a kind of portable crack checkout gear, especially a kind of portable HONGGUANG slit lamp with dark place.

Background technology

Angle closure glaucoma is the main irreversibility blinding oculopathy of China, and especially in the remote countryside area, early diagnosis, early prevention are the important measures that reduce the angle closure glaucoma blinding.Because the rural medical system condition is relatively poor, the early screening angle closure glaucoma mainly relies on Oblique Flashlight to estimate anterior chamber depth, but this inspection method can influence those who are investigated's pupil size, sensitivity and specificity are lower, and low to the high pleat type of iris angle closure glaucoma early diagnosis ability, therefore limit its application in basic unit is anti-blind.

Van Herick method is to utilize slit lamp to judge peripheral chamber depth, because of it fast, conveniently, accurately is widely used in the examination of early stage angle closure glaucoma.Van Herick method inspection accurately needs: 1, pupil is big or small naturally; Good dark situation when 2, checking.Because common slit lamp volume is bigger, costs an arm and a leg, and limits its application in basic unit's angle closure glaucoma early screening.Though portable slit lamp has been arranged at present, used electric filament lamp and the surrounding light of slit lamp all can influence the pupil size when checking, thereby influences check result.

Summary of the invention

The purpose of this utility model be to overcome in the prior art common slit lamp volume big, cost an arm and a leg, portable slit lamp is owing to adopt electric filament lamp to influence the problem of check result, a kind of use HONGGUANG crack is provided, and can form the formula of the taking crack checkout gear of dark place, solve the difficult problem that present ophthalmology medical worker runs into during with van Herick method examination angle closure glaucoma in basic unit.

For realizing above purpose, this utility model has been taked following technical scheme: portable crack checkout gear, include the portable slit lamp body, the light that in this lamp body, is provided with the red LED light source, this red LED light source is sent be converted to even directional light compound lens, this directional light is converted to the crack finishing tool of crack light, the top outside described lamp body is provided with the prism that is used for vertical crack light is converted to horizontal fissure light; On described lamp body, also be provided with the switch of the described red LED light source of control; Also include and coincide with the circumference of eyes form and be examined the light tight eyeshield that forms dark place around the eyeball, on described eyeshield, the position corresponding with eyeball be embedded with the band rule magnifier, have loophole on the temporo skew back face of described eyeshield, the applying that is complementary of the temporo skew back face of the vertical of described prism and eyeshield.

Because HONGGUANG is little to the pupil influence, utilize the red LED light source to form even red directional light by compound lens, directional light forms slit source by the slit of illumination cutter, can regulate crack HONGGUANG width by the ventilative slit of regulating between the finishing tool of crack, at the cylindrical tube front end prism is set, can be with the red slit of illumination that forms by vertically transferring horizon light to, this horizontal light projects by the soft eyeshield of the deformable of slit lamp front end with enclosing near the eyes that form is coincide in the environment that is similar to dark place that forms, by being attached to the rule on the slit lamp magnifier, limit anterior chamber depth is near the eyes carried out quantitative inspection, be mainly used in basic unit's angle closure glaucoma early screening.

At least two of described crack finishing tools are separated with the light penetrating slit crack each other mutually.The position of crack finishing tool is adjustable, changes the size in printing opacity slit by the position of regulating the crack finishing tool, thereby can obtain the crack HONGGUANG of different in width.

Described compound lens includes cylindrical lens and lens, and this cylindrical lens is between described red LED light source and lens.The HONGGUANG that compound lens can send LED transfers uniform parallel HONGGUANG to.

The portable crack of this utility model checkout gear is that employing red LED light source is a slit source, carries out the eyeball peripheral chamber depth and checks (van Herick inspection); Adhere to a soft eyeshield of deformable that coincide with the eye socket profile at the slit lamp leading portion, can form the environment that is similar to dark place; Be attached to the rule on the magnifier of crack, can carry out quantitative check angle, peripheral room.

This utility model compared with prior art, has following advantage: utilize HONGGUANG to the little characteristic of pupil influence, have HONGGUANG crack, dark place and graduated portable crack checkout gear, can be vanHerick anywhere checks, carry out the angle closure glaucoma examination, surrounding can't form dark place when having overcome used electric filament lamp of prior art slit lamp and inspection, light influences the pupil size, influences the drawback of check result, makes to check that effect is more accurate.

Description of drawings

Fig. 1 is a portable slit lamp lamp body structure sketch map;

Fig. 2 is eyeshield generalized section and observing effect sketch map;

Fig. 3 is a portable crack checkout gear overall structure sketch map;

Description of reference numerals: 1, prism, 2, the crack finishing tool, 3, switch, 4, lens, 5, cylindrical lens, 6, the red LED light source, 7, magnifier, 8, eyeshield, 81, temporo skew back face, 9, eyeball, 10, rule, 11, cornea, 12, iris, 13, sclera, 14, lamp body, 15, compound lens.

The specific embodiment

Below in conjunction with the drawings and specific embodiments content of the present utility model is described in further details.

Embodiment:

A kind of portable crack checkout gear, include portable slit lamp body 14 and eyeshield 8, see also shown in Figure 1, the light that be provided with red LED light source 6 in this lamp body 14, this red LED light source 6 is sent is converted to the compound lens 15 of even directional light, this directional light is converted to the crack finishing tool 2 of crack light, 2 at least two of crack finishing tools, be separated with light penetrating slit crack 21 each other mutually, the top outside lamp body 14 is provided with the prism 1 that is used for vertical crack light is converted to horizontal fissure light; On described lamp body 14, also be provided with the switch 3 of the described red LED light source 6 of control;

See also shown in Figure 2, eyeshield 8 is for to be made by the black light-proof material, this eyeshield 8 coincide with the circumference of eyes form and form dark place around being examined eyeball 9, temporo side places, the position corresponding with eyeball 9 are embedded with the magnifier 7 of being with rule 10 partially in eyeshield 8 central authorities, have loophole on the temporo skew back face 81 of eyeshield 8, the applying that is complementary of the temporo skew back face 81 of the vertical of prism 1 and eyeshield 8 makes red slit of illumination can project the eye surface by the loophole on eyeshield 8 inclined-planes.

Above-mentioned eyeshield 8 encloses the formation dark place near the eyes being examined, thereby has effectively avoided extraneous light that pupil is influenced.

Combinations thereof lens 15 include cylindrical lens 5 and lens 4, and this cylindrical lens 15 is between red LED light source 6 and lens 4.

See also shown in Figure 3, portable crack device placed be examined at the moment, allow the person under inspection hide branch hole with hands, tested eye fixation dead ahead, eyeshield 8 is close to the circumocular skin of inspection, make and check the eyeball 9 similar dark place environment that are in, prism 1 applying of slit lamp is linked on temporo side 81 inclined-planes of eyeshield 8, press switch 3, open slit lamp red LED light source 6, observe temporo side limbus of corneae by magnifier 7, by compressing eyeshield 8, regulate the distance between magnifier 7 and the eyeball 9, up to the clearest, at eyeshield inclined-plane slip slit source, make red slit source vertically by the most peripheral temporo side angle film 11 and project iris 12, judge temporo side periphery anterior chamber depth and cornea 11 thickness respectively, eyeshield 8 Rotate 180 degree can be carried out the offside eye examination by amplifying lens rule 10.

Above-listed detailed description is at the specifying of this utility model possible embodiments, and this embodiment is not in order to limiting claim of the present utility model, does not allly break away from the equivalence that this utility model does and implements or change, all should be contained in the claim of this case.

Claims

1. portable crack checkout gear, include portable slit lamp body (14), it is characterized in that: the light that in this lamp body (14), be provided with red LED light source (6), this red LED light source (6) is sent be converted to even directional light compound lens (15), this directional light is converted to the crack finishing tool (2) of crack light, the top outside described lamp body (14) is provided with the prism (1) that is used for vertical crack light is converted to horizontal fissure light; On described lamp body (14), also be provided with the switch (3) of the described red LED light source of control (6);

Also include and coincide with the circumference of eyes form and be examined the light tight eyeshield (8) that eyeball (9) forms dark place on every side, the magnifier (7) that go up at described eyeshield (8), the position corresponding with eyeball (9) is embedded with band rule (10), have loophole on the temporo skew back face (81) of described eyeshield (8), the applying that is complementary of the temporo skew back face (81) of the vertical of described prism (1) and eyeshield (8).

2. portable crack as claimed in claim 1 checkout gear is characterized in that: (2) at least two of described crack finishing tools are separated with light penetrating slit crack (21) each other mutually.

3. portable crack as claimed in claim 1 or 2 checkout gear is characterized in that: described compound lens (15) includes cylindrical lens (5) and lens (4), and this cylindrical lens (5) is positioned between described red LED light source (6) and the lens (4).