Hoshi Kensei, Dannoue Kazuhiko, Namba Hiroyuki, Yoshida Junko, Usui Tomohiko
Ophthalmology, International University of Health and Welfare, Chiba, JPN.
Ophthalmology, Dannoue Eye Clinic, Kawasaki, JPN.
Cureus. 2024 Nov 26;16(11):e74529. doi: 10.7759/cureus.74529. eCollection 2024 Nov.
Keratoconus is a condition that causes progressive thinning and anterior protrusion of the cornea. Because of its irregular astigmatism, mild to moderate keratoconus is corrected with hard contact lenses (HCLs), but blepharoptosis due to the long-term wearing of HCLs is often a problem. In this study, we investigated blepharoptosis in HCL wearers with keratoconus. Thirty-seven keratoconic eyes were enrolled and divided into several groups according to their wearing history or age. Eyelid margin distance (EMD), margin light reflex distance-1 (MRD-1), and levator function (LF) were measured using a distantometer or anterior segment optical coherence tomography (AS-OCT). The EMD decreased with years of wear but showed no correlation with age; the MRD-1 decreased with years of wear and with older age; the LF showed no relationship with either years of wear or age. In the classification of ptosis, there was no severe ptosis in the present sample. The long-term wearing of HCLs is likely to cause blepharoptosis even in keratoconic eyes.
圆锥角膜是一种导致角膜进行性变薄和前突的病症。由于其不规则散光，轻度至中度圆锥角膜可通过硬性接触镜（HCL）矫正，但长期佩戴HCL导致的上睑下垂往往是个问题。在本研究中，我们调查了佩戴HCL的圆锥角膜患者的上睑下垂情况。纳入37只圆锥角膜眼，并根据其佩戴史或年龄分为几组。使用视野计或眼前节光学相干断层扫描（AS-OCT）测量睑缘距离（EMD）、缘光反射距离-1（MRD-1）和提上睑肌功能（LF）。EMD随佩戴年限增加而减小，但与年龄无关；MRD-1随佩戴年限增加和年龄增长而减小；LF与佩戴年限和年龄均无关。在上睑下垂分类中，本样本中无重度上睑下垂。即使是圆锥角膜眼，长期佩戴HCL也可能导致上睑下垂。
