System for computerized fitting of contact lenses

The process of automating the selection of an ocular contact lens to fit a patient's eye using a computer simulation of the fluorescein dye test, comprising the steps of:

• a. using stored data to simulate the positioning of a contact lens on a tangent plane normal to the apex of the cornea of the patient whose eye is to receive the contact lens;
• b. determining the height of a point on the surface of the contact lens from the plane of the base of said lens;
• c. determining the height of a corresponding point on the surface of the cornea to said tangent plane;
• d. determining the distance between said corresponding points;
• e. simulating the lowering of the lens onto corneal surface until such surfaces touch at at least one point;
• f. iteratively rotating said contact lens about two axes until an apparent minimum average clearance is achieved;
• and
• g. further rotating said contact lens to determine if said apparent minimum exceeds a predetermined increase corresponding to background noise.