The Effects of Overnight Orthokeratology Lens Wear on Ocular Scatter.

Jeon, Hye Min; Ahn, Dong Seob; Lee, Dong Jun; Moon, Sang Jeong; Lee, Kyung Heon

doi:2014.55.11.1595

J Korean Ophthalmol Soc > Volume 55(11); 2014 > Article

Original Article

Journal of the Korean Ophthalmological Society 2014;55(11):1595-1599.
DOI: https://doi.org/10.3341/jkos.2014.55.11.1595 Published online November 15, 2014.

The Effects of Overnight Orthokeratology Lens Wear on Ocular Scatter.

Hye Min Jeon, Dong Seob Ahn, Dong Jun Lee, Sang Jeong Moon, Kyung Heon Lee

Busan Sungmo Eye Hospital, Busan, Korea. pinmed@hanmail.net

각막굴절교정학 렌즈 착용이 산란에 미치는 영향

전혜민⋅안동섭⋅이동준⋅문상정⋅이경헌

Busan Sungmo Eye Hospital, Busan, Korea

Abstract

PURPOSE
To evaluate the change of visual quality after wearing orthokeratology lenses overnight. METHODS: This study included 13 patients (24 eyes) who wore orthokeratology lenses for the first time. Visual quality was assessed with the optical quality analysis system (OQAS) using the double-pass technique. The value of modulation transfer function (MTF) cutoff, Strehl ratio, and objective scatter index (OSI) were measured at baseline and 4 weeks after wearing the lenses. RESULTS: The mean spherical equivalent decreased from -2.70 +/- 1.03 diopters (D) to 0.03 +/- 0.36 D after 4 weeks of wearing orthokeratology lenses and uncorrected visual acuity improved from log MAR 0.88 +/- 0.17 to log MAR 0.03 +/- 0.04. The MTF cutoff decreased from 38.20 +/- 11.01 to 34.79 +/- 10.30 and the Strehl ratio decreased from 0.24 +/- 0.07 to 0.21 +/- 0.07 but without statistical significance. The OSI significantly increased from 0.38 +/- 0.19 to 0.72 +/- 0.40 after wearing orthokeratology lenses. CONCLUSIONS: Orthokeratology lenses were effective for correction of myopia and astigmatism. The OSI increased after wearing the lenses, but MFT cutoff and Strehl ratios were not affected.

Key Words: OQAS;Orthokeratology;Scatter