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Ophthalmic contact lens with internal fixation light for examination of the optic nerve head *
Author(s) -
Richards David W.,
Murphy Kent A.,
Cartwright Mont J.
Publication year - 1993
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1111/j.1475-1313.1993.tb00481.x
Subject(s) - optic nerve , pupil , fixation (population genetics) , optometry , medicine , ophthalmology , contact lens , glaucoma , head (geology) , lens (geology) , optics , psychology , neuroscience , biology , physics , paleontology , population , environmental health
Stereoscopic slitlamp examination of the optic nerve head in one‐eyed patients is difficult because there is currently no way to provide the patient with a fixation target. This situation is often aggravated in glaucoma patients by a miotic and fixed pupil. We have developed a funduscopic contact lens which incorporates a fixation target, allowing the patient lo view the target with the eye being examined. The device has been successfully tested on normal volunteers.