PECULIARITIES OF CORNEAL EPITHELIAL LAYER STATE AFTER THE RELEX® SMILE ACCORDING TO OPTICAL COHERENCE TOMOGRAPHY DATA

Офтальмохирургия

S. N. Sakhnov¹  R. O. Damashauskas¹  O. A. Klokova¹  A. V. Fomin² 

[1] Krasnodar Branch of the S. Fyodorov Eye Microsurgery Federal State Institution;Tradomed Invest Company;

关键词: cornea;    epithelium;    myopia;    relex® smile;   

DOI  :  

来源: DOAJ

【 摘 要 】

Purpose. Prospective study of corneal epithelial layer thickness (CET) changes after the ReLEx® SMILE in case of a low and moderate myopia correction.Material and methods. The «SMILE» study group included 46 patients (46 eyes) with the mean age 26.02±5.18, the mean spherical equivalent was 4.02±0.22D, the follow-up period was 6 months and less. All patients were examined using the optical coherence tomography (OCT) with the xR AVANTI (Optovue, Inc) pre-operatively and 1 day, 2 weeks, 1, 3, 6 months post-operatively, the ametropia laser correction was performed by the ReLEx® SMILE method using the VisuMax® (500 kHz, Carl Zeiss Meditec AG).Results. After 6 months in 43 patients the uncorrected visual acuity (UCVA) was 0.9-1.0 (93.5%), the refraction within ±0.5D of the planned one was achieved in 89.1% (41 eyes), ±1.0D – in 100% of cases. Epithelial hyperactivity was noted during the first 3 months (Р<0.001). The difference in CET compared with preoperative data in the central corneal area was 5.98±0,38μm (11.09%), the minimum growth was detected in the nasal sector (5-6mm) – 4.19±0.27μm (7.92%), the maximum – in the temporal area (2-5mm sector) – 7.17±0.45μm (13.61%). Epithelial corneal remodeling after the ReLEx® SMILE retained the preoperative statistically significant difference in the CET in the upper and lower segments (Р<0.001) and conversely changed into the opposite pattern in the temporal and nasal segments (Р<0.02).Conclusion. The obtained results show a statistically significant growth of corneal epithelial layer thickness in the correction of low and moderate myopia by the ReLEx® SMILE method predominantly in the early postoperative period.

【 授权许可】

Unknown