Soft contact lens with surface identification and method of using same
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United States of America Patent
Stats
-
Jun 25, 1985
Grant Date -
N/A
app pub date -
May 5, 1983
filing date -
May 5, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A soft contact lens of generally symmetrical concavo-convex configuration and of uniform optical power about its optic axis is provided with an elongated marking in the peripheral portion thereof to permit the user to identify readily the inner surface of the lens. This marking is asymmetrical about its midpoint so that the user can determine the appropriate surface by noting the direction of asymmetry. This marking may be produced as a raised or recessed surface during moulding and casting of the lens, or as a recessed surface subsequently by etching, engraving or the like, or it may be formed by printing of the lens.
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Family
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Cited Art Landscape
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