1. Refractive status in the Beaver Dam Eye Study;Wang;Invest Ophthalmol Vis Sci,1994
2. Refractive errors in an older population;Attebo;Ophthalmology,1999
3. Prevalence and risk factors for refractive errors in an adult inner city population;Katz;Invest Ophthalmol Vis Sci,1997
4. Refractive errors in a black adult population;Wu;Invest Ophthalmol Vis Sci,1999
5. Prevalence and risk factors for refractive errors in adult Chinese in Singapore;Wong;Invest Ophthalmol Vis Sci,2000