关键词:
Anisometropia
Child
Corneal wavefront aberration
Myopia
Refraction, ocular
Retina
摘要:
Objective To compare the differences in peripheral retinal defocus values (RDVs) and wavefront aberrations between myopic and emmetropic eyes in children with unilateral myopic anisometropia, and to analyze the association between RDVs and wavefront aberrations. Methods The cross-sectional study consecutively enrolled patients aged 8 to 15 years, who were initially diagnosed as unilateral myopic anisometropia in the Department of Ophthalmology in Peking University Third Hospital from August 2023 to November 2024. Multispectral refraction topography was used to measure RDVs in the regions with eccentricity of 0° to <15° (RDV-15), 15° to <30° (RDV-30), and 30° to 45° (RDV-45), as well as in the superior (RDV-S), inferior (RDV-I), nasal (RDV-N), and temporal (RDV-T) directions under the mesopic condition at physiologic pupil sizes. A visual function analyzer was used to measure and calculate the higher order aberrations (HOAs), astigmatism (Z2⁻², Z2²), trefoil (Z3⁻³, Z3³), coma (Z3⁻¹, Z3¹), and spherical aberration (Z4⁰) of the eyes and those arising from internal and corneal components within a pupil diameter of 4 mm. Results There were 69 eligible patients (138 eyes), including 35 males (70 eyes) and 34 females (68 eyes). The age was (10.6±1.6) years. The myopic eyes showed higher RDV-30 [-0.06 (-0.19, 0.05) D], RDV-45 [0.01 (-0.34, 0.39) D], RDV-S [-0.75 (-1.16, -0.09) D], RDV-I [0.35 (-0.14, 0.95) D], RDV-T [-0.02 (-0.34, 0.40) D], and RDV-N [0.21 (-0.35, 0.88) D] values compared to the emmetropic eyes [-0.14 (-0.28, 0.00), -0.29 (-0.50, -0.02), -0.93 (-1.47, -0.39), -0.02 (-0.62, 0.54), -0.28 (-0.82, 0.04), -0.14 (-0.64, 0.20) D], with statistically significant differences (all P<0.05). The myopic eyes had lower ocular astigmatism Z2-2 [0.062 (0.032, 0.112) μm] and Z22 [0.149 (0.085, 0.249) μm], corneal astigmatism Z22 [0.2