Method for measuring eye features with a contact lens

• US 4,309,085 A
• Filed: 07/12/1979
• Issued: 01/05/1982
• Est. Priority Date: 07/12/1979
• Status: Expired due to Term

• Current Assignee: Robert J. Morrison
• Original Assignee: Robert J. Morrison
• Inventors: Morrison, Robert J.
• Primary Examiner(s): Corbin, John K.
• Assistant Examiner(s): Sugarman, Scott J.
• Application Number:
  US06/057,040
• Time in Patent Office: 908 Days
• Field of Search: 351/160 R-162, 351/6, 351/39, D24/99, 128/745
• US Class Current: 351/219
• CPC Class Codes: A61B 3/1005 for measuring distances inside the eye, e.g. thickness of the cornea A61B3/11 takes precedence
• CPC Class Codes: G02C 7/021 with pattern for identification or with cosmetic or therapeutic effects methods and processes take preference, e.g. printing, marking or copying processes B41M; identification in general G09F3/00; producing decorative effects in general B44C; surface treatment of glass C03C15/00 - C03C23/00; positioning or marking of lenses B24B13/0055
• CPC Class Codes: G02C 7/04 Contact lenses for the eyes disinfection or sterilisation of contact lenses A61L12/00

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.

Claims

1. 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.

2. 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.

3. The method defined in claim 2 and repeating the steps of inserting the contact lens and measuring the feature in the eye at spaced time intervals to follow the medical condition of said feature in the eye.