EP 0690997 A1 19960110 - CONTACT LENS DESIGNED TO ACCOMMODATE AND CORRECT FOR THE EFFECTS OF PRESBYOPIA
Title (en)
CONTACT LENS DESIGNED TO ACCOMMODATE AND CORRECT FOR THE EFFECTS OF PRESBYOPIA
Title (de)
KONTAKTLINSE FÜR DIE ANPASSUNG UND KORREKTION VON WEITSICHTIGKEITSEFFEKTEN
Title (fr)
LENTILLE DE CONTACT POUR COMPENSER ET CORRIGER LES EFFETS DE L'ABERRATION SPHÉRIQUE.
Publication
Application
Priority
- GB 9306424 A 19930327
- US 9403042 W 19940322
Abstract (en)
[origin: WO9423327A1] A contact lens is disclosed which has a first optical zone (2) adapted to compensate for spherical aberration and at least one additional zone (3) which is configured to provide improved peripheral vision. Generally, the first optical zone is shaped to provide an aspheric surface and the additional zone or zones is shaped to provide a refractive power not greater than the first zone, the difference in the refractive powers of the zones being no more than about 0.75 diopter.
IPC 1-7
IPC 8 full level
CPC (source: EP)
G02C 7/042 (2013.01); G02C 7/044 (2013.01); G02C 7/045 (2013.01)
Citation (search report)
See references of WO 9423327A1
Designated contracting state (EPC)
AT BE DE DK ES FR GB IE IT NL
DOCDB simple family (publication)
WO 9423327 A1 19941013; AU 6490094 A 19941024; CA 2153492 A1 19941013; EP 0690997 A1 19960110; GB 9306424 D0 19930519; JP H08508588 A 19960910
DOCDB simple family (application)
US 9403042 W 19940322; AU 6490094 A 19940322; CA 2153492 A 19940322; EP 94912280 A 19940322; GB 9306424 A 19930327; JP 52214194 A 19940322