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Comment & Response |

Postoperative Visual Acuity Should Be Reported in Studies of Binocular Summation—Reply

Stacy L. Pineles, MD, MS1
[+] Author Affiliations
1Jules Stein Eye Institute, University of California, Los Angeles
JAMA Ophthalmol. 2015;133(8):969. doi:10.1001/jamaophthalmol.2015.0944.
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In Reply We thank Drs Leffler and Janot for their interest in our article. They have brought up an interesting point regarding VA before and after surgery. We have evaluated the mean high- and low-contrast VA scores preoperatively and postoperatively for binocular and better-eye testing and did not find any differences. The Table summarizes our findings.

Table. Preoperative and Postoperative VA Scores in Patients With StrabismusVA TypePreoperative VAPostoperative VAP ValueaLetter Score, Mean (SD)
(n = 90)Approximate Snellen EquivalentLetter Score, Mean (SD)
(n = 90)Approximate Snellen EquivalentETDRS Binocular85 (7)20/2086 (8)20/20.37 Better eye84 (8)20/2084 (8)20/20.842.5% LCA Binocular62 (12)20/6363 (12)20/63.57 Better eye61 (13)20/10060 (12)20/100.281.25% LCA Binocular60 (13)20/6360 (12)20/63.88 Better eye62 (12)20/10059 (12)20/100.90

Abbreviations: ETDRS, Early Treatment Diabetic Retinopathy Study; LCA, low-contrast acuity; VA, visual acuity.

aTwo-tailed t test.


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August 1, 2015
Christopher T. Leffler, MD, MPH; Adam C. Janot, MD
1Department of Ophthalmology, Virginia Commonwealth University, Richmond
JAMA Ophthalmol. 2015;133(8):968-969. doi:10.1001/jamaophthalmol.2015.0939.
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