CS275006B2 - Soft contact lens with strong negative refraction - Google Patents

Soft contact lens with strong negative refraction

Info

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
Application number
CS420589A
Other languages
Czech (cs)
Other versions
CS8904205A1 (en
Inventor
Otto Akademik Wichterle
Jiri Ing Vodnansky
Kamil Ing Wichterle
Original Assignee
Ustav Makromolekularni Chemie
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ustav Makromolekularni Chemie filed Critical Ustav Makromolekularni Chemie
Priority to CS420589A priority Critical patent/CS275006B2/en
Publication of CS8904205A1 publication Critical patent/CS8904205A1/en
Publication of CS275006B2 publication Critical patent/CS275006B2/en

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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>
CS420589A 1989-07-10 1989-07-10 Soft contact lens with strong negative refraction CS275006B2 (en)

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)

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