GB2107590A - Artificial eye lens - Google Patents
Artificial eye lens Download PDFInfo
- Publication number
- GB2107590A GB2107590A GB08130086A GB8130086A GB2107590A GB 2107590 A GB2107590 A GB 2107590A GB 08130086 A GB08130086 A GB 08130086A GB 8130086 A GB8130086 A GB 8130086A GB 2107590 A GB2107590 A GB 2107590A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lens
- loop
- artificial eye
- eye
- shaped
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims description 5
- 239000000306 component Substances 0.000 claims 3
- 210000001747 pupil Anatomy 0.000 description 9
- 208000002177 Cataract Diseases 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000004438 eyesight Effects 0.000 description 4
- 238000000605 extraction Methods 0.000 description 3
- 230000002980 postoperative effect Effects 0.000 description 3
- 210000004127 vitreous body Anatomy 0.000 description 3
- 229930000680 A04AD01 - Scopolamine Natural products 0.000 description 2
- STECJAGHUSJQJN-GAUPFVANSA-N Hyoscine Natural products C1([C@H](CO)C(=O)OC2C[C@@H]3N([C@H](C2)[C@@H]2[C@H]3O2)C)=CC=CC=C1 STECJAGHUSJQJN-GAUPFVANSA-N 0.000 description 2
- STECJAGHUSJQJN-UHFFFAOYSA-N N-Methyl-scopolamin Natural products C1C(C2C3O2)N(C)C3CC1OC(=O)C(CO)C1=CC=CC=C1 STECJAGHUSJQJN-UHFFFAOYSA-N 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000002637 mydriatic agent Substances 0.000 description 2
- 230000002911 mydriatic effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- STECJAGHUSJQJN-FWXGHANASA-N scopolamine Chemical compound C1([C@@H](CO)C(=O)O[C@H]2C[C@@H]3N([C@H](C2)[C@@H]2[C@H]3O2)C)=CC=CC=C1 STECJAGHUSJQJN-FWXGHANASA-N 0.000 description 2
- 229960002646 scopolamine Drugs 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 206010002945 Aphakia Diseases 0.000 description 1
- 206010022941 Iridocyclitis Diseases 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229930182555 Penicillin Natural products 0.000 description 1
- JGSARLDLIJGVTE-MBNYWOFBSA-N Penicillin G Chemical compound N([C@H]1[C@H]2SC([C@@H](N2C1=O)C(O)=O)(C)C)C(=O)CC1=CC=CC=C1 JGSARLDLIJGVTE-MBNYWOFBSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910002835 Pt–Ir Inorganic materials 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 201000004612 anterior uveitis Diseases 0.000 description 1
- 210000000795 conjunctiva Anatomy 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 201000008659 immature cataract Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002690 local anesthesia Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 201000004673 mature cataract Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229940049954 penicillin Drugs 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000010344 pupil dilation Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000472 traumatic effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/14—Eye parts, e.g. lenses or corneal implants; Artificial eyes
- A61F2/16—Intraocular lenses
- A61F2/1602—Corrective lenses for use in addition to the natural lenses of the eyes or for pseudo-phakic eyes
- A61F2/161—Posterior chamber lenses for use in addition to the natural lenses of the eyes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/14—Eye parts, e.g. lenses or corneal implants; Artificial eyes
- A61F2/16—Intraocular lenses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/14—Eye parts, e.g. lenses or corneal implants; Artificial eyes
- A61F2/16—Intraocular lenses
- A61F2002/1681—Intraocular lenses having supporting structure for lens, e.g. haptics
- A61F2002/1682—Intraocular lenses having supporting structure for lens, e.g. haptics having mechanical force transfer mechanism to the lens, e.g. for accommodating lenses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/14—Eye parts, e.g. lenses or corneal implants; Artificial eyes
- A61F2/16—Intraocular lenses
- A61F2002/1681—Intraocular lenses having supporting structure for lens, e.g. haptics
- A61F2002/1683—Intraocular lenses having supporting structure for lens, e.g. haptics having filiform haptics
Landscapes
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
According to the present invention the artificial eye lens comprises a supporting element made up of two components. The first of these is made as an arc-shaped loop 3 fixed with its ends in the lateral surface of the lens 2 and situated around at least half the length of the lens circumference, being spaced apart from the lens surface a distance equal to the thickness of the iris. The second component of the supporting element is essentially a U-shaped leg 4 which is likewise fixed with its ends in the lens lateral surface and is arranged opposite to the middle portion of the loop 3. The leg 4 is so bent towards the loop as to contact the latter prior to implanting the lens in the posterior eye chamber. (Fig. 3). <IMAGE>
Description
SPECIFICATION
Artificial eye lens
The present invention relates generally to medical engineering and more specifically to ophthalmology, having particular reference to an artificial eye lens applied in treatment of aphakia.
In an artificial eye lens adapted for being implanted in the posterior chamber of a patient's eye and comprising an optical lens and a supporting element made of an elastic material and held to the lateral surface of said lens, according to the present invention, the supporting element is made up of two components of which one is shaped as an arc-like loop made fast with its ends in the lens lateral surface and arranged around and in front of the lens anterior surface outside the field of view thereof over a length equal to at least half the length of the lens circumference at a distance corresponding to the thickness of the iris, while the other component is formed as a
U-shaped leg arranged opposite the middle portion of the arc-shaped loop and fixed in the lens lateral surface. The components are inclined to contact each other prior to implanting the lens in the posterior chamber.
The artificial eye lens proposed herein is advantageous in that it makes it possible to simplify implantation operative techniques as compared to those with known artificial eye lenses having two diametrically opposite legs.
The provision of a single supporting element built up of two components simplifies the bringing of the lens into the posterior chamber which is a rather complicated task from a technical standpoint with previously known artificial lenses in the case of a shallow anterior eye chamber. Moreover, the artificial eye lens now proposed eliminates the possibility of stitching up the supporting element thereof to the iris. The present invention increases reliability in fixing the artificial eye lens due to the fact that the arc-shaped leg has a large bearing area on the front portion of the iris, whereby the stability of the lens position during lateral displacement of the eye becomes higher.The bent-out leg prevents the lens from being displaced into the anterior eye chamber in the case of pupil dilation and excludes subsequent jamming of the iris in the case of pupil contraction and, in addition, provides for an additional point of lens fixation.
According to one of the embodiments of the present invention the loop is arranged lengthwise in relation to the lens outside surface, while the leg is bent out towards the loop at 15 to 20 with respect to the lens frontal surface.
The present invention will now be illustrated by a detailed description of a specific embodiment thereof which is not intended to limit
this invention in any way, to be read with
reference to the accompanying drawings,
wherein:
Figure 1 is a front view of the artificial eye
lens, according to the invention;
Figure 2 is a side view of the artificial eye
lens, according to the present invetion;
Figure 3 is a sectional view of the artificial
eye lens, according to the present invention,
when implanted in the posterior eye chamber,
and
Figure 4 is a front view of Fig. 2.
The artificial eye lens 1 is made up of a
lens proper 2, a loop-shaped component 3
and a U-shaped leg 4. These latter constitute
together a supporting element which enables
the artificial lens to be secured in the posterior
chamber of a patient's eye without being
stitched up to the surrounding tissues as will
hereinafter be described in detail.
The optical lens 2 of the proposed artificial
eye lens is of a conventional type and made
from an appropriate material compatible with
the eye tissues, e.g. from polymethylmetha
crylate. Usually the 2 is 5 to 6 mm in
diameter.
The loop-shaped component 3 is made of a
fine wire or filament of for example a Pt-Ir alloy or polypropylene or from any other ma
terial compatible with the eye tissue. Ends 5
and 6 of the loop-shaped component 3 are
embedded in the lateral surface of the lens 2.
The loop 3 itself, as can be seen from Fig. 1
is passed over a length approximately 4/5
that of the circumference of the lens 2 and
outside the field of view thereof; to achieve
this the loop 3 somewhat exceeds the lens 2
in the diameter. In this particular case the
diameter of the lens 2 is within 5 and 6 mm,
whereas that of the loop of the loop-shaped
component 3 is within 8.5 and 9 mm. The
loop-shaped component 3 is arranged length
wise or parallel to the lens frontal surface, as
visible in Fig. 2 and is spaced from the lens
distance to the thickness of the iris.
Situated opposite the middle portion of the
loop-shaped component or loop 3 is a U
shaped leg 4 with its ends 7 and 8 made fast
in the lateral surface of the lens 2. The leg 4
is bent towards the loop 3 so as to make up
an angle of from 15 to 20 with the frontal
surface of the artificial eye lens being im
planted. In general case said leg is so bent as
to be in contact with the loop 3 before
implanting.
The afore-described aritificial lens is im
planted in the patient's eye as follows.
The anterior eye chamber must be split
open through a keratotomy or keratosclero
tomy (Fig. 4). Cataract extraction is done with
the help of a cryoextractor or by resorting to
the tracapsular method. When this has been
done the loop 3 must be caught by suture
forceps, and the lens 2 together with the leg 4 4is brought into the posterior eye chamber via a basal iridotomy 3, 5 to 4mm spaced 3 mm apart from the pupil margin along the twelve o'clock meridian.
A suture 9, of nylon or supramide (propietary name) thread, is applied to the iridotomy at its centre. It should be noted however that experience has shown such a suture can be dispensed with.
Proper centring of the lens is attained largely due to selecting the place of the iridotomy which can be made in the upper portion of the iris from the limbus to the pupil margin. Preparatory to making the iridotomy one must apply the aritificial lens (or a spatula graduated in millimetres) to the iris and make an incisure of the iris at a required place with the optical axis of the lens arranged at the centre of the pupil.
Given below are two case histories to illustrate the practical application of the proposed artificial eye lens.
1. Patient 1 Diagnosis: mature cataract of the left eye, immature cataract of the right eye.
Intracapsular cryoextracion of the cataract was carried out under local anesthesia with a 2-percent novacain solution. A keratosclerotomy was made, whereupon the cataract was extracted through the pupil. Next a basal iridotomy 3.5 mm long was made 3 mm apart from the margin of the pupil along the twelve o'clock meridian, and an artificial lens was brought through the thus-made basal iridotomy. The lens was held by a suture forceps and introduced tangentially to the anterior boundary membrane of the vitreous body, while the bottom supporting loop and the optical lens were situated under the iris in the posterior eye chamber and the loop rested upon the peripheral portion of the iris around the pupil. A loop suture was placed on the basal iridotomy using supramide 10-0.
The keratoscleral wound was stitched up by a continuous suture of supramide 10-0, whereupon sterile air was admitted to pass into the anterior eye chamber.
A solution of penicillin was administered under the conjunctiva. The patient was permitted to walk two hours after the operation.
Postoperative progress was uneventful. Application of strong mydriatics (viz. a 0.2-percent scopolamine solution) made it possible to dismiss the patient on the 7th day after surgery as in the case of a conventional cataract extraction. The acuity of vision was 0.7 to 0.8.
A repeated examination of the patient half a year after the operation demonstrated a stable position of the artificial lens implanted and retention of acute eyesight in the patient.
2. Patient II. Diagnosis: mature age-dependent cataract of the left eye.
Intracapsular cryoextraction of the cateract was carried out after conventional preoperative procedure and under anesthesia common
to a cataract extraction surgery.
A keratosclerotomy was made for the pur
pose and the cataract was extracted through
the pupil.
There was observed pronounced promi
nence of the vitreous body through the pupil
which practically ruled out implantation of a
commonly adopted iris-clip lens without con
siderable loss of the citreous body. Insertion
of the herein-disclosed artificial eye lens
through a peripheral basal iridotomy 3.5 mm
long made it possible to avoid vitreoptosis as
the lens and the bottom supporting loop
slided down the anterior boundary membrane
of the#vitreous body.
In addition, the lens implanting procedure
did not involve any considerable opening of
the incision which is the case with implanting
intrapupillary lenses. The keratotomy wound
was stitiched up by a continuous suture using
supramide thread.
Strong mydriatics were administered within
the postoperative period, viz. a solution of
scopolamine, which made it possible to avoid b postoperative iridocyclitis.
The acuity of eyesight at the patient's dis
missal was 0.8 to 0.9.
An examination of the patient after a year
showed the lens in a correct position without
dislocation of the supporting elements. Acuity
of vision was completely retained.
Practical application of the present inven
tion considerably simplifies the operative pro
cedure, renders it less traumatic and provides
for reliable fastening of an artificial eye lens in
the posterior eye chamber.
There has been disclosed above an opti
mum embodiment of the artificial eye lens,
but some modifications may be introduced
without departing from the scope of the pre
sent invention. Thus, it is permissible that the
arc-shaped loop 3 could pass over a length
shorter than 4/5 that of the lens circumfer
ence but at least half the length thereof.
Claims (3)
1. An artificial eye lens adapted for being
implanted in the posterior chamber of a pa
tient's eye, comprising an optical lens and a
supporting element made of an elastic ma
terial, said supporting element being made up
of a first component essentially comprising an
arc-shaped loop fixed with its ends in the lens
lateral surface and situated around and in
front of the lens surface over a length equal to
at least half the length of the lens circumfer
ence at a distance from the lens surface
corresponding to the thickness of the iris, and
a second component formed as a U-shaped
leg arranged opposite the middle portion of
said arc-shaped loop and fixed with its ends in
the lens lateral surface; the abovesaid compo
nents being so inclined as to contact each
other prior to implanting the lens in the post prior chamber.
2. An artificial eye lens as claimed in
Claim 1, wherein the U-shaped leg makes up an angle of from 15 to 20 with the lens frontal surface, and the arc-shaped loop is arranged parallel to the lens face surface.
3. An artificial eye lens substantially as hereinbefore described with reference to, and as illustrated in the accmpanying drawings.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08130086A GB2107590B (en) | 1981-10-06 | 1981-10-06 | Artificial eye lens |
| DE3140465A DE3140465C2 (en) | 1981-10-06 | 1981-10-12 | Artificial eye lens |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08130086A GB2107590B (en) | 1981-10-06 | 1981-10-06 | Artificial eye lens |
| DE3140465A DE3140465C2 (en) | 1981-10-06 | 1981-10-12 | Artificial eye lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2107590A true GB2107590A (en) | 1983-05-05 |
| GB2107590B GB2107590B (en) | 1985-01-09 |
Family
ID=25796657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08130086A Expired GB2107590B (en) | 1981-10-06 | 1981-10-06 | Artificial eye lens |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE3140465C2 (en) |
| GB (1) | GB2107590B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3722910A1 (en) * | 1987-07-10 | 1989-01-19 | Adatomed Pharma & Med | Intraocular lens |
| FR2619004A1 (en) * | 1987-08-05 | 1989-02-10 | Domilens Laboratoires | INTRAOCULAR LENS OF REAR BEDROOM |
| DE4116869C1 (en) * | 1991-05-23 | 1992-07-16 | Helmut Dr. 8720 Schweinfurt De Binder |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL185893C (en) * | 1979-04-05 | 1990-08-16 | Tiong San Ong Dr | LENS INTENDED FOR IMPLANTATION IN THE LENS CAPSULES OF A HUMAN EYE. |
| US4285072A (en) * | 1979-05-14 | 1981-08-25 | Harry H. Leveen | Anterior-posterior intraocular lens |
| GB2053689A (en) * | 1979-07-05 | 1981-02-11 | Rainin Edgar Alan | Intraocular lens |
-
1981
- 1981-10-06 GB GB08130086A patent/GB2107590B/en not_active Expired
- 1981-10-12 DE DE3140465A patent/DE3140465C2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2107590B (en) | 1985-01-09 |
| DE3140465C2 (en) | 1986-01-16 |
| DE3140465A1 (en) | 1983-04-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |