Method of machining contact lenses

Details Method of machining contact lenses Method of machining contact lenses

1994-05-20

1998-09-08

Sugarman, Scott J.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

351160R, 351161, 451 42, G02C 702, G02C 704

Patent

active

058052666

ABSTRACT:
A method for providing a contact lens for a patient. According to this method, an optical preform is selected, and a resting position of the optical preform on the patient's eye is determined. An optical feature is also located on a patient's eye. Then, a reference position is located on the surface of the optical preform coincident with the optical feature on the patients eye, when the optical preform is in the resting position. Finally, the optical modification is machined on the optical preform at a location based on the reference position on the optical preform.

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Kendall, C.A., "Ultrafocal.RTM. Bifocal Contact Lens", Contacto , Jan. 1976, pp. 31-36.

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