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R W Bellhorn, C D King, G D Aguirre, H Ripps, I M Siegel, H C Tsai; Pigmentary abnormalities of the macula in rhesus monkeys: clinical observations.. Invest. Ophthalmol. Vis. Sci. 1981;21(6):771-781.
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In a survey of 546 rhesus monkeys of various ages, 6.1% of the animals showed ophthalmoscopically visible hypopigmented spots in their maculas. There was a statistically significant correlation between the age of the animal and the degree of hypopigmentation. Electroretinographic responses and visually evoked potentials were evaluated in a selected group of monkeys with and without hypopigmented macular spots. No significant change in retinal function as a result of the macular abnormalities could be detected.
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