The light reflex on retinal arteries and veins. A theoretical study and a new technique for measuring width and intensity profiles across retinal vessels.
D003720:Densitometry / Q000379:methods; D005654:Fundus Oculi; D006801:Humans; D008027:Light; D008962:Models, Theoretical; D010781:Photography / Q000295:instrumentation / Q000379:methods*; D012161:Retinal Artery / Q000502:physiology*; D012169:Retinal Vein / Q000502:physiology*