Peripheral light, particularly from the extreme temporal area, so not usually influenced by spectacle wear, can pass via the anterior eye to be focused at the opposite side exactly where one tends to find pterygial growth and cortical lens opacities, evidence in itself of the involvement of light exposure in the progression of these diseases.
The damage that short wavelength radiation causes to surface tissues can be shown quite dramatically by a recently developed photographic technique. Ocular UV fluorescence photography highlights preclinical cell damage and an image of the interpalpebral region of TVCI education director Jane Veys, who under normal examination has normal clear and flat interpalpebral bulbar conjunctiva was projected on screen and seen to clearly show fluorescence at 3 and 9 o'clock to match the cellular damage related to light exposure. Professor Coroneo added that understanding how light triggers the stem cell changes that drive degenerative change will help to explain inflammatory disease mechanisms.
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