Analysis of corneal topography in patients with pure microphthalmia in Eastern China

作者：Hu, Pei-Hong; Gao, Gui-Ping; Yu, Yao; Pei, Chong-Gang; Zhou, Qiong; Huang, Xin; Zhang, Ying; Shao, Yi^*

来源：Journal of International Medical Research, 2015, 43(6): 834-840.

DOI：10.1177/0300060515594195

• Pure microphthalmia
• corneal topography
• cornea thickness
• morphology
• Orbscan IIZ (R)
• keratoconus
• anthropometry

Objectives To determine the typical corneal changes in pure microphthalmia using a corneal topography system and identify characteristics that may assist in early diagnosis.
Methods Patients with pure microphthalmia and healthy control subjects underwent corneal topography analysis (Orbscan IIZ (R) Corneal Topography System; Bausch and Lomb, Bridgewater, NJ, USA) to determine degree of corneal astigmatism (mean A), simulation of corneal astigmatism (sim A), mean keratometry (mean K), simulated keratometry (sim K), irregularities in the 3- and 5-mm zone, and mean thickness of nine distinct corneal regions.
Results Patients with pure microphthalmia (n=12) had significantly higher mean K, sim K, mean A, sim A, 3.0mm irregularity and 5.0mm irregularity, and exhibited significantly more false keratoconus than controls (n=12). There was a significant between-group difference in the morphology of the anterior corneal surface and the central curvature of the cornea.
Conclusions Changes in corneal morphology observed in this study could be useful in borderline situations to confirm the diagnosis of pure microphthalmia.

• 出版日期2015-12
• 单位南昌大学; 南昌市第三医院