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US 4,309,085 AGranted
Method for measuring eye features with a contact lens
OwnerRobert J. Morrisoninventor
Life of this patent
Estimating the term…
Abstract
The disclosure is of a contact lens for use on the eye, the lens carrying indicia usable for measuring changes in the shape, size or length, or the like, of portions of the eye.
Claims3
The method of measuring features of the eye comprising
- forming a soft contact lens having measuring indicia thereon,
- repeatedly placing said soft contact lens on the eye and in intimate engagement therewith, said lens overlying a changeable feature of the eye to be measured, and
- measuring said feature by means of said indicia each time the soft contact lens is placed on the eye.
The method of measuring phenonema in the eye comprising the steps of
- forming a soft contact lens having measuring indicia thereon,
- at a predetermined time, placing said lens on the eye overlying a feature of the eye to be measured whereby said feature occupies a portion of said measuring indicia, said lens intimately engaging the surface of the eye over its entire area,
- measuring said feature by means of said indicia,
- removing said contact lens from the eye, and
- at a later time, again placing said contact lens on the eye and measuring said feature and comparing the relationship of said feature to said measuring indicia, whereby the operator can determine the medical status of the feature and its change in dimensions with time.
2 more elements
Dependencies are inferred from the claim text.