1. West SK, Munoz B, Rubin GS, Schein OD, Bandeen-Roche K, Zeger S, German PS, Fried LP (1997) Function and visua impairment in a population-based study of older adults. Opthalmol Vis Sci 38:72–82
2. Lam BL, Christ SL, Zheng DD, West SK, Munoz BE, Swenor BK, Lee DJ (2013) Longitudinal relationships among visual acuity and tasks of everyday life: the Salisbury Eye Evaluation study. Invest Ophthalmol Vis Sci 54:193–200
3. Levenson JH, Kozarsky A (1990) Visual acuity. In: Walker HK, Hall WD, Hurst JW (eds) Clinical methods: the history, physical, and laboratory examination, vol 3. Butterworth Ed, Boston
4. Teller DY (1979) The forced-choice preferential looking procedure: a psychophysical technique for use with human infants. Infant Behav Dev 2:135–153
5. McDonald MA, Dobson V, Sebris L, Baitch L, Varber D, Teller DY (1985) The acuity card procedure: a rapid test of infant acuity. Invest Ophthalmol Vis Sci 26:1158–1162