Optical filters for reducing eye strain, during surgery
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United States of America Patent
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Apr 9, 2002
Grant Date -
N/A
app pub date -
Sep 4, 1998
filing date -
Sep 4, 1998
priority date (Note) -
Expired
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Abstract
Viewing apparatus, for medical and surgical practitioners incorporating one or more optical filters, each exhibiting a reverse photopic response, such that green light is at least partially attenuated, whereas red and blue light are both substantially transmitted. The invention includes means for supporting one or more optical filters in the practitioner's field of view, such as a pair of eyeglass frames or endoscope mounting for use, for example, in conjunction with laparoscopic surgery. Various technologies may be employed to realize a desired reverse photopic response, including absorptive dyes, dielectric layers, and/or holograms.
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