Retinoscopy and eye size.
Retinoscopy was performed on animals with different sized eyes, all of whom appeared hypermetropic. The data were well fitted by an equation of the form y = kx(-2) where y is refractive error in diopters, and x is the corneo-retinal length of the eye. Apparent hypermetropia may be due to the reflection from the inner surface of the retins.
D000818:Animals; D006224:Cricetinae; D005123:Eye / Q000033:anatomy & histology*; D006168:Guinea Pigs; D008027:Light; D051379:Mice; D008954:Models, Biological; D011817:Rabbits; D051381:Rats; D012029:Refraction, Ocular; D014894:Weights and Measures