Wharton K R, Yolton R L
J Am Optom Assoc. 1986 Jun;57(6):426-30.
Rural inhabitants of Venezuela, Ecuador and Honduras were examined by volunteer optometry student interns. The resulting data indicate significantly lower best-corrected distance visual acuities, a greater prevalence of many ocular pathologies, less frequent occurrence of myopia, and an earlier onset of presbyopia than is found in the general United States population.
