By American Academy of Ophthalmology, Steven I. Rosenfeld, MD

ISBN-10: 1560557990

ISBN-13: 9781560557999

Studies the anatomy, body structure, embryology, and pathology of the lens. additionally offers an outline of lens and cataract surgical procedure, and describes the issues of surgical procedure.

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Additional info for 2007-2008 Basic and Clinical Science Course Section 11: Lens and Cataract

Sample text

In particular lenses illustrated in these patents and those made commercially under those patents are colored throughout with a red coloration. Whereas such coloration throughout the lens is satisfactory for so-called hard lenses made from plastic, it has been difficult to fashion a soft lens or a gas-permeable lens wherein the color remains uniformly distributed throughout the lens. pn=US04998817__ • Eyeglasses for aiding color blind viewers Inventor(s): Taylor; Donald E. (Rte. 2, Box 144, Mundelein, IL 60060) Assignee(s): none reported Patent Number: 4,300,819 Date filed: November 7, 1979 Abstract: Improved eyeglasses for use by color blind individuals or viewers.

34 Color Blindness example of the type of information that you can expect to obtain from a patent search on color blindness: • Contact lens for correction of color blindness Inventor(s): Zeltzer; Harry I. (107 High St. O. Box 209, Ipswich, MA 01938) Assignee(s): none reported Patent Number: 4,998,817 Date filed: May 10, 1990 Abstract: A corneal contact lens for the correction of color blindness, which is clear except for a thin red exterior layer covering the area admitting light to the pupil. ; said red layer continuously covering substantially all the light normally admitted to the pupil of the eye during the daytime and being in line with the axis of the pupil; said lens being sufficiently large to enable ready and stable centration without jeopardizing oxygen transmission.

When worn by a color blind viewer, the combination of lenses improves the color blind viewer's ability to discriminate between different colored objects while the reflective or mirror surfaces cause the lenses to appear to be identical to other persons or viewers. Excerpt(s): The present invention relates to optical devices for use by color blind viewers and more particularly, to eyeglasses which improve the ability of a color blind viewer to discriminate between different colored objects. A large proportion of the Patents 35 population suffers from some form of color blindness which reduces eye discrimination of different colored objects.

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2007-2008 Basic and Clinical Science Course Section 11: Lens and Cataract by American Academy of Ophthalmology, Steven I. Rosenfeld, MD

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