| http://www.w3.org/ns/prov#value | - Secondly, there may be side effects of such large doses of vitamin A. Always talk to your doctor before taking any supplements.Light AvoidanceAlthough no direct link has been established, it is generally recommended that everybody, especially those with disorders such as RP, wear dark UV-protected sunglasses and a wide-brimmed hat in bright, sunny conditions, such as while skiing or at the beach.L
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