| 摘要 |
<p>A contact-type ophthalmic lens for use in diagnosis and laser surgery has a contact lens (14), an entry lens (16), and a intermediate lens (18). The lenses are aligned along their optical axes. The anterior surface of the contact lens has an aspheric surface with a high power. The intermediate lens is a meniscus lens with a concave posterior surface and a convex anterior surface. Both surfaces of the entry lens are convex and aspheric. This combination of lenses provides a very wide field of view, allowing regions of the eye anterior to the equator to be readily viewed in an arerial image focused in a plane (50) anterior to the lens system.</p> |
