A method of measuring visual acuity that uses psychophysical techniques and forced-choice responses. It involves presenting optotypes like Tumbling E or Landolt C in varying orientations, and the patient indicates the perceived orientation. Psychometric acuity testing reduces crowding and contour interaction effects, providing more reliable measure of acuity for amblyopia.
A method of measuring visual acuity that uses psychophysical techniques and forced-choice responses. It involves presenting optotypes like Tumbling E or Landolt C in varying orientations, and the patient indicates the perceived orientation. Psychometric acuity testing reduces crowding and contour interaction effects, providing more reliable measure of acuity for amblyopia.
psychometric visual acuity
Sources
Arundale, K. 1978. An investigation into the variation of visual acuity test scores. Transactions of the Ophthalmological Societies of the United Kingdom, 98(2), pp.345-349.
Flom, M.C., Weymouth, F.W. and Kahneman, D. 1963. Visual resolution and contour interaction. Journal of the Optical Society of America, 53(9), pp.1026-1032.
Raasch, T.W., Rucker, F.J., Vogel, C.R. and Tan, K.K. 1998. Intelligent automated static perimetry. Ophthalmology, 105(5), pp.808-814.
Rutstein, R. and Daum, K. 1997. Anomalies of Binocular Vision: Diagnosis & Management. St. Louis: Mosby.
Westheimer, G. 1979. Scaling of visual acuity measurements. Archives of Ophthalmology, 97(2), pp.327-330.