Abstract:
PURPOSE:To compare dry eye disease parameters between small incision lenticule extraction (SMILE) and laser subepithelial keratomileusis (LASEK). METHODS:This prospective, nonrandomized study included 39 eyes of 39 patients who underwent SMILE (n = 19) and LASEK (n = 20). Dry eye disease parameters included Ocular Surface Disease Index (OSDI), tear breakup time, Schirmer I test (SIT) value, corneal esthesiometry result, tear meniscus area, meibomian gland evaluation result, lipid layer thickness, and blink rate. Evaluations were performed before surgery and at 1 and 6 months after surgery. RESULTS:Compared with the LASEK group, the SMILE group showed lower corneal esthesiometry values at 1 month and higher OSDI scores and lower SIT values at 6 months after surgery. The SMILE group showed significantly higher OSDI scores at 1 and 6 months after surgery than before, but significantly lower OSDI scores at 6 months than at 1 month after surgery. Both groups showed significantly decreased corneal sensitivity at 1 month after surgery, which increased to the preoperative level 6 months after surgery. The change in OSDI scores at 1 month after surgery positively correlated with changes in the total and partial blink rates, whereas the change in corneal sensitivity at 1 month after surgery negatively correlated with the total and partial blink rates. CONCLUSIONS:Both SMILE and LASEK groups showed temporary decreases in corneal sensitivity, which recovered to baseline levels. Although subjective symptoms worsened after SMILE, SIT values improved after LASEK. Compared with SMILE, LASEK yielded better results regarding subjective symptoms, tear production, and corneal sensitivity.
journal_name
Corneajournal_title
Corneaauthors
Chung B,Choi M,Lee KY,Kim EK,Seo KY,Jun I,Kim KY,Kim TIdoi
10.1097/ICO.0000000000002240subject
Has Abstractpub_date
2020-04-01 00:00:00pages
501-507issue
4eissn
0277-3740issn
1536-4798journal_volume
39pub_type
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