[The effect of prolonged exposure to UV radiation on the state of the ocular media and on the parameters of the electroretinogram in the rabbit].

Rabbits were exposed to vertically directed UV-B radiation (280-320 nm) 5 days a week during 10 months with daily dose 6.5 J/m2 (biological effective daily dose 0.83 J/m2). Within the first week expressed photokeratoconjunctivitis was observed, but to the end of third week state of cornea and conjunctiva became practically normal. Transparency of intra-eye structures was unchanged, functional activity of retina underwent undulatory alterations. Amplitude changes of a- and b-waves of electroretinogram reached 30% of control values during the first, were negligible within the second, and exceed control by 15-20% between 8 and 10-th months of exposure. Critical frequency of flashing was unchanged.