Meopic Contrat enitivity and Ocular Higher-Order Aberration after Overnight Orthokeratology Original Reearch Article

Purpoe To invetigate meopic contrat enitivity and night driving ability in eye undergoing overnight orthokeratology, and to analyze the relationhip among meopic contrat enitivity, ocular higher-order aberration, and myopic correction. Deign Propective, noncomparative, conecutive cae erie. Method In 44 eye of 22 ubject (mean age ± tandard deviation [D], 24.0 ± 3.2 year) with orthokeratology, ocular aberration and meopic contrat enitivity were determined before and three month after commencement of the procedure. Mean pherical equivalent refraction ± D wa −2.34 ± 0.99 diopter at baeline. Meopic contrat enitivity with and without glare wa aeed uing the Meotet II (Oculu, Wetzlar, Germany). Reult Orthokeratology ignificantly reduced the log meopic contrat enitivity from 0.25 ± 0.08 to 0.08 ± 0.10 without glare (P < .0001, Wilcoxon) and from 0.21 ± 0.11 to 0.07 ± 0.10 with glare (P < .0001). The proportion of eye that fulfilled the German tandard recommendation level for night driving wa 36%. The induced change in log meopic contrat enitivity howed ignificant negative correlation with the change in third-order (r = −0.490, P = .0013 without glare; r = −0.362, P = .0177 with glare; pearman rank correlation coefficient) and fourth-order root mean quare (r = −0.586, P = .0001 and r = −0.306, P = .0450, repectively). Furthermore, ignificant correlation wa found between the amount of myopic correction and the induced change in log meopic contrat enitivity (r = −0.442, P = .0038 without glare; r = −0.464, P = .0024 with glare). The induced change in higher-order aberration ignificantly correlated with the amount of myopic correction (P < .0001, Pearon correlation coefficient). Concluion Meopic contrat enitivity after overnight orthokeratology i deteriorated ignificantly a ocular higher-order aberration increae, and thee change depend on the amount of myopic correction.