TY - JOUR
T1 - Brightness acuity test and outdoor visual acuity in cataract patients
AU - Holladay, Jack T.
AU - Prager, Thomas
AU - Trujillo, Jorge
AU - Ruiz, Richard S.
PY - 1987
Y1 - 1987
N2 - The disparity between functional outdoor vision and the acuity measured in the standard refracting lane is well known among clinicians. A simple device, the brightness acuity tester (B.A.T.), was developed to predict a patient's functional outdoor acuity. The B.A.T. has an illuminated hemispheric bowl, 60 mm in diameter, with a 12-mm aperture. Fourteen normals and 50 patients with cataracts were tested using the B.A.T. and then tested outside in bright sunlight. The B.A.T. correlated extremely well (r = +0.84, P <.0001) with the acuities measured outside. There was no decrease in visual acuity in the 14 normal patients,but there was a one to ten line decrease in vision among the cataract patients. Upon retesting, the B.A.T. scores did not vary, while outside testing scores did change due to variable outdoor ambient light levels on sunny days. The B.A.T. is a simple, repeatable, useful test for predicting functional outdoor acuity.
AB - The disparity between functional outdoor vision and the acuity measured in the standard refracting lane is well known among clinicians. A simple device, the brightness acuity tester (B.A.T.), was developed to predict a patient's functional outdoor acuity. The B.A.T. has an illuminated hemispheric bowl, 60 mm in diameter, with a 12-mm aperture. Fourteen normals and 50 patients with cataracts were tested using the B.A.T. and then tested outside in bright sunlight. The B.A.T. correlated extremely well (r = +0.84, P <.0001) with the acuities measured outside. There was no decrease in visual acuity in the 14 normal patients,but there was a one to ten line decrease in vision among the cataract patients. Upon retesting, the B.A.T. scores did not vary, while outside testing scores did change due to variable outdoor ambient light levels on sunny days. The B.A.T. is a simple, repeatable, useful test for predicting functional outdoor acuity.
KW - brightness acuity tester
KW - cataract
KW - functional outdoor acuity
KW - visual acuity
UR - http://www.scopus.com/inward/record.url?scp=0023154188&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0023154188&partnerID=8YFLogxK
U2 - 10.1016/S0886-3350(87)80016-0
DO - 10.1016/S0886-3350(87)80016-0
M3 - Article
C2 - 3559957
AN - SCOPUS:0023154188
SN - 0886-3350
VL - 13
SP - 67
EP - 69
JO - Journal of Cataract and Refractive Surgery
JF - Journal of Cataract and Refractive Surgery
IS - 1
ER -