Contact lens including a first optical zone, a second optical zone and a transition zone

A contact lens includes a first optical zone, a second optical zone and a transition zone. The first optical zone is shaped as a first dioptric power profile. The second optical zone is shaped as a second dioptric power profile. The transition zone is connected between the first optical zone and the...

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Bibliographische Detailangaben
Hauptverfasser:	LIAO, HSIEN-SHENG, CHEN, CHIHNG, YANG, WENI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BANDAGES, DRESSINGS OR ABSORBENT PADS CONTACT LENSES DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE OPTICS ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PHYSICS PROSTHESES SPECTACLES SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:	A contact lens includes a first optical zone, a second optical zone and a transition zone. The first optical zone is shaped as a first dioptric power profile. The second optical zone is shaped as a second dioptric power profile. The transition zone is connected between the first optical zone and the second optical zone and is shaped as a third dioptric power profile. The third dioptric power profile has a refraction variation along a radial direction varied from the first dioptric power profile to the second dioptric power profile, increasing with radius. The transition area includes a first subzone, a second subzone and a third subzone. The first subzone and the third subzone have a diopter that gradually changes, compared to the second subzone, from the center of the lens to the edge of the lens. The second sub-zone has a measured steeply changing diopter from the center of the lens to the edge of the lens.