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KMID : 1011420180230040503
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Journal of Korean Ophthalmic Optics Society
2018 Volume.23 No. 4 p.503 ~ p.509
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Analysis of Tear Meniscus using Optical Coherence Tomography after Cataract Surgery
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Park Chang-Won
Kim Hyo-Jin
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Abstract
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Purpose: To investigate the effect of dry eye after cataract surgery, we analyzed the tear meniscus using anterior segment optical coherence tomography (AS-OCT) and compared the results to conventional dry eye tests (TBUT and Schirmer).
Methods: We included 125 eyes that were to undergo cataract surgery and 104 eyes from normal subjects.
The height, depth, and area of the tear meniscus were measured using AS-OCT. These tear meniscus variables, as well as the conventional dry eye tests, were compared between the preoperative cataract and normal groups. The same tests were compared in patients with cataract before and 2 months after surgery. Subjective dry eye symptoms were evaluated using the McMonnies questionnaire before and after cataract surgery.
Results: The tear meniscus variables and conventional dry eye tests did not differ significantly between the preoperative cataract and normal groups, but the tear meniscus area (TMA) reduced from 0.037±0.015 mm² in the preoperative cataract group to 0.015±0.010 mm² in the postoperative cataract group (p=0.001). The McMonnies questionnaire score rose from 10.28±3.93 to 13.32±4.82 points after cataract surgery (p=0.005).
Conclusions: The TMA, as measured using AS-OCT, differed significantly between the pre- and postoperative cataract groups, suggesting that the parameter could be used to evaluate dry eye in patients with cataract.
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KEYWORD
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Dry eye, Optical coherence tomography, Tear meniscus, Schirmer’s test, Tear film break-up time
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