CS275006B2 - Soft contact lens with strong negative refraction - Google Patents
Soft contact lens with strong negative refractionInfo
- Publication number
- CS275006B2 CS275006B2 CS420589A CS420589A CS275006B2 CS 275006 B2 CS275006 B2 CS 275006B2 CS 420589 A CS420589 A CS 420589A CS 420589 A CS420589 A CS 420589A CS 275006 B2 CS275006 B2 CS 275006B2
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- soft contact
- contact lens
- strong negative
- negative refraction
- lens
- Prior art date
Links
Landscapes
- Eyeglasses (AREA)
Abstract
The soft contact lens with strong negative refraction (stronger than four dioptres) has between the border of its optical zone (A) of a diameter from 7.5 to 9 mm and the outer peripheral belt (C) of the lens a strongly curved transition surface (B) with a width of 0.5 to 2 mm, by means of which the outer surface of the lens approximates the inner surface (E) up to a distance of 0.07 to 0.2 mm.<IMAGE>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CS420589A CS275006B2 (en) | 1989-07-10 | 1989-07-10 | Soft contact lens with strong negative refraction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CS420589A CS275006B2 (en) | 1989-07-10 | 1989-07-10 | Soft contact lens with strong negative refraction |
Publications (2)
Publication Number | Publication Date |
---|---|
CS8904205A1 CS8904205A1 (en) | 1991-02-12 |
CS275006B2 true CS275006B2 (en) | 1991-12-17 |
Family
ID=5384274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CS420589A CS275006B2 (en) | 1989-07-10 | 1989-07-10 | Soft contact lens with strong negative refraction |
Country Status (1)
Country | Link |
---|---|
CS (1) | CS275006B2 (en) |
-
1989
- 1989-07-10 CS CS420589A patent/CS275006B2/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CS8904205A1 (en) | 1991-02-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
IF00 | In force as of 2000-06-30 in czech republic | ||
MM4A | Patent lapsed due to non-payment of fee |
Effective date: 20010710 |