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Transmission Spectra of Light to the Mammalian Retina
Author(s) -
Dillon James,
Zheng Lei,
Merriam John C.,
Gaillard Elizabeth R.
Publication year - 2000
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1562/0031-8655(2000)0710225tsoltt2.0.co2
Subject(s) - sclera , retina , bundle , posterior segment of eyeball , optics , materials science , anterior eye segment , anatomy , biology , physics , ophthalmology , medicine , cornea , composite material
A simple method has been developed to determine the optical properties of the anterior segment of the intact eye. This consists of a probe that is inserted into the posterior sclera and detects light passing through the anterior segment. The probe is connected to a charge‐coupled device spectrophotometer via a fiber optic bundle. It was determined that the young rat anterior segment transmits light down to 300 nm, whereas calf and rabbit eyes transmit no UVB and only part of the UVA to the posterior segment. The absorbing species in these animals is most likely NAD(P)H, which has an absorption maximum at ∼345 nm and is associated with ζ‐crystallin. A young primate anterior segment transmits almost no UV with a steep increase in transmission at CA 400 nm. Because some experiments employed a light tube that is used to illuminate the retina during vitrectomies, this method can be used to determine the transmission spectra of the anterior segment of humans in vivo.