Cases Showing Crossed Monovision After Cataract Surgery

Abstract

[Purpose] To evaluate 11 cases showing crossed monovision after cataract surgery with monovision correction.

[Subjects and Methods] A total of 228 patients had received cataract surgery and intraocular lens implant for both eyes with monovision correction at our clinic between August 2008 and June 2013. Of 228, 11 patients showed crossed monovision and had corrected distant visual acuity (VA) of > 1.0, astigmatism within 0.75 D, and a spherical equivalent difference of 1.5 D to 2.0 D between both eyes at postoperative 1 month. These 11 patients were enrolled as subjects. Postoperative near and far VAs, stereopsis, and change in ocular dominance were retrospectively investigated. Any difficulty in viewing after surgery was also surveyed using a questionnaire.

[Results] At postoperative 1 month, the subjects' binocular uncorrected distance and near VAs were 0.8 to 1.5 and 0.6 to 1.0, respectively. All the subjects had stereo acuity less than 80 seconds of arc by the stereo fly test. According to the questionnaire result, 8 subjects had no difficulty in near or distant viewing without wearing glasses, 2 subjects overall had no difficulty in viewing and only wore glasses occasionally when necessary, and 1 subject complained of difficulty in viewing without a clear description of the difficulty.

[Conclusion] Like patients with conventional monovision, many patients showing crossed monovision could obtain good VA after surgery. However, some patients with crossed monovision might experience difficulty in viewing without a specific reason. Therefore, the possibility of unexpected crossed monovision should be well explained to patients before cataract surgery with monovision correction.