Methods of manufacturing and apparatus useful in manufacturing toric contact lenses
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United States of America Patent
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Jan 2, 2018
Issued Date -
N/A
app pub date -
Jun 23, 2014
filing date -
Jun 26, 2013
priority date (Note) -
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Abstract
Method and apparatus of manufacturing a toric contact lens comprising providing a toric insert (12) without an orientation mark to be used in forming a toric contact lens mold section; placing the toric insert without an orientation mark in an orientation mark fixture (10) comprising a single piece fixture housing (20) structured to hold a toric insert at an angle specified for an orientation mark, the fixture housing having intersecting surfaces (36, 40) which form a generally V-shaped region on which the toric insert is located, the generally V-shaped region contacting the toric insert at two different contact points, lines or areas; fixing the toric insert without an orientation mark to the orientation mark fixture; forming an orientation mark on the toric insert fixed to the orientation mark fixture; using the toric insert with the orientation mark to form a toric contact lens mold section; and using the toric contact lens mold section to form a toric contact lens.
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