초록 ▼

A disposable aplanatic lens for reconfiguring the cornea of an eye for ophthalmic laser surgery includes a lens which has a flat anterior surface that is substantially parallel to a flat aplanation surface. A skirt surrounds the aplanation surface and extends outwardly therefrom to define a chamber.

A disposable aplanatic lens for reconfiguring the cornea of an eye for ophthalmic laser surgery includes a lens which has a flat anterior surface that is substantially parallel to a flat aplanation surface. A skirt surrounds the aplanation surface and extends outwardly therefrom to define a chamber. Additionally, the skirt is formed with a groove which creates a suction channel between the skirt and the aplanation surface in the chamber. A vacuum pump is connected in fluid communication with the suction channel and is selectively activated to create a partial vacuum in the channel. In its operation, the aplanatic lens is positioned over the cornea and the pump is activated to create the partial vacuum. Due to this partial vacuum, the cornea is drawn into the chamber where it is urged against the aplanation surface of the lens. The result of this is that the cornea is flattened into an aplanation configuration which is free from spherical aberration and coma during ophthalmic surgery.

대표청구항 ▼

[ What is claimed is:] [1.]1. An aplanatic lens system for use in corneal surgery which comprises:a lens member having a substantially flat anterior surface and a substantially flat aplanation surface, said aplanation surface being substantially parallel to said anterior surface;a skirt surrounding

[ What is claimed is:] [1.]1. An aplanatic lens system for use in corneal surgery which comprises:a lens member having a substantially flat anterior surface and a substantially flat aplanation surface, said aplanation surface being substantially parallel to said anterior surface;a skirt surrounding said aplanation surface and establishing an interface between said skirt and said aplanation surface, said skirt extending outwardly from said aplanation surface to define a recessed chamber therebetween, said recessed chamber having an opening;a passageway in fluid communication with said recessed chamber adjacent said interface;suction means in fluid communication with said passageway for creating a partial vacuum in said recessed chamber between said aplanation surface and the cornea to flatten the cornea against said aplanation surface when the cornea is positioned over said opening to said recessed chamber; anda retainer ring, said lens member being mounted on said retainer ring and further, wherein said retainer ring is attached to a laser system.