References
- Klein R, Klein B EK, Moss S E, DeMets D. Inter-observer variation in refraction and visual acuity measurement using a standardized protocol. Ophthalmology 1983; 90: 1357–9
- Blackhurst D W, Maguire M G, Macular Photocoagulation Study Group. Reproducibility of refraction and visual acuity measurement under a standard protocol. Retina 1989; 9(3)163–9
- Klein R, Klein B EK, Linton D LP, DeMets D L. The Beaver Dam Eye Study: Visual acuity. Ophthalmology 1991; 93(8)1310–5
- Hawkins B S, Ganley J P. Risk of visual acuity impairment attributable to ocular histoplasmosis. Arch Ophthalmol 1994; 112: 655–66
- Ganley J P. Epidemiologic characteristics of presumed ocular histoplasmosis. Acta Ophthalmologica 1973, suppl 119: 1–63
- Ederer F, Krueger D E, Mowery R L, Connett J, Wentworth D. Lessons from the Visual Acuity Impairment Survey pilot study. Am J Publ Health 1986; 76(2)160–5