Individual variation in the transmission of UVB radiation in the young adult eye

Data obtained mostly from animal models and ex vivo samples show that a small portion of ultraviolet light (UV, 300-400 nm) penetrates the cornea and crystalline lens and impinges on the human retina. UV transmission to the retina appears to be unique to the young and some older pseudophakes. In thi...

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Bibliographic Details
Published in:PloS one 2018-07, Vol.13 (7), p.e0199940-e0199940
Main Authors: Hammond, Jr, Billy R, Renzi-Hammond, Lisa
Format: Article
Language:English
Subjects:
Adults
Age
Animal models
Biology and Life Sciences
Color
Color vision
Cornea
Dermatology
Eye - metabolism
Eye - radiation effects
Female
Females
Flicker
Health aspects
Humans
Male
Males
Medicine and Health Sciences
Optical density
People and Places
Photometry
Physical Sciences
Pigmentation - radiation effects
Radiation
Retina
U.V. radiation
Ultraviolet radiation
Ultraviolet Rays - adverse effects
Variation
Young Adult
Young adults
Youth
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Summary:Data obtained mostly from animal models and ex vivo samples show that a small portion of ultraviolet light (UV, 300-400 nm) penetrates the cornea and crystalline lens and impinges on the human retina. UV transmission to the retina appears to be unique to the young and some older pseudophakes. In this study, we determine the variation in UV transmission in a relatively homogenous sample of young adults. 42 subjects were tested (M = 19 ± 1.3 years). Absolute thresholds to UV radiation were collected (λmax = 315 nm, 305-325). Macular pigment optical density (MPOD, measured using heterochromatic flicker photometry) and iris color (using a standardized color scale) were also assessed as potential covariates. All of the subjects could detect UV radiation at 315 nm but individual variation was large (over a factor of 30). Higher MPOD and darker iridies were not related to UV sensitivity in this young sample. Males, however, were more sensitive to UV than the females (p
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0199940