Glare testing in patients with cataract after dilation.
OBJECTIVE
To learn whether dilating the pupil will have an impact on glare testing for cataract evaluation.


METHODS
Evaluation of diagnostic test.


METHODS
Fifty-four adult patients at the Jones Eye Institute at the University of Arkansas for Medical Sciences.


METHODS
One eye of each patient was randomized for study. The pupil size, visual acuity (VA) using the Early Treatment Diabetic Retinopathy Study (ETDRS) acuity chart, and glare testing with the Brightness Acuity Tester (BAT) at the medium setting were performed. The patients' eyes were then dilated with all measurements repeated. Each patient was then graded for cataracts using the Lens Opacification Classification System III by an independent observer.


METHODS
VA and BAT results.


RESULTS
Compared with undilated BAT results, 29 of 54 patients (53.7%) lost 1 or more lines of vision during BAT testing after dilation. Undilated BAT results were predicted to within 1 line of accuracy in 44 of 54 patients (81.5%) by adjusting the dilated BAT result by the change in VA from dilation. With this method, results were predicted to within 2 lines of accuracy in 52 of 54 patients (96.3%).


CONCLUSIONS
BAT results are affected by dilation half of the time and can be adjusted by the change in VA from dilation to predict undilated BAT results.
Wiggins
Michael N
MN
University of Arkansas for Medical Sciences, Jones Eye Institute, Department of Ophthalmology, Little Rock, Arkansas 72205-7199, USA. wigginsmichael@uams.edu
Irak-Dersu
Inci
I
Turner
Scott D
SD
Thostenson
Jeff D
JD
D000368:Aged; D000369:Aged, 80 and over; D002386:Cataract / Q000175:diagnosis* / Q000503:physiopathology; D004338:Drug Combinations; D005260:Female; D019466:Glare; D006801:Humans; D008297:Male; D008875:Middle Aged; D009184:Mydriatics / Q000008:administration & dosage*; D010656:Phenylephrine / Q000008:administration & dosage; D011680:Pupil / Q000187:drug effects*; D014331:Tropicamide / Q000008:administration & dosage; D014786:Vision Disorders / Q000175:diagnosis* / Q000503:physiopathology; D014787:Vision Tests; D014792:Visual Acuity / Q000502:physiology
D004338:Drug Combinations; D009184:Mydriatics; D010656:Phenylephrine; D014331:Tropicamide