Method for determining the curvature of a cornea
OwnerM. Linton Herbertinventor
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Abstract
The method of the present invention uses a standard prior art refracting device of the type typically used by an optometrist to refract the human eye in air and in water. Computations utilizing the refraction data obtained during the air and water refraction measurements is used to compute the radius of curvature of the central area of the cornea of a human eye. The method of the present invention thereby substantially facilitates contact lens fitting procedures.
Claims10
A method for determining the curvature of the central area of the cornea of a human eye to simplify contact lens fitting procedures, comprising the steps of:
- a. using a refracting device to determine the corrective refractive power of the eye in air;
- b. using said refracting device to determine the corrective refractive power of the eye in a transparent liquid;
- c. measuring the spacing between the anterior portion of the cornea and said refracting device;
- d. computing the refractive power of the cornea;
- and
- e. using the cornea refractive power to compute the cornea radius of curvature.
A method for determining the curvature of the central area of the cornea of a human eye to simplify contact lens fitting procedures, comprising the steps of:
- a. using a refracting device to determine the corrective refractive power of the eye in the air and in a transparent liquid;
- b. measuring the spacing between the anterior portion of the cornea and said refracting device and the spacing between the surface of the cornea and the retina of the eye;
- c. computing the refractive power of the cornea;
- and
- d. using the cornea refractive power to determine the radius of curvature of the central area of the cornea.
Dependencies are inferred from the claim text.