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Changes in the corneal thickness and limbus after 1 year of scleral contact lens use
Eye ( IF 2.8 ) Pub Date : 2019-12-10 , DOI: 10.1038/s41433-019-0729-z
Beatriz de Luis Eguileor 1 , Arantxa Acera 2 , Alaitz Santamaría Carro 1 , Raquel Feijoo Lera 1 , Julene Escudero Argaluza 3 , Jaime Etxebarria Ecenarro 1
Affiliation  

To assess the physiological changes in the cornea over time in patients with irregular cornea fitted with Rose K2 XL gas-permeable scleral contact lenses. Prospective study of 16 eyes of patients who did not tolerate gas-permeable corneal contact lenses and were fitted with Rose K2 XL scleral lenses. We assessed the central vault and the corneal thickness centrally and at peripheral regions (2 to 5 mm annulus). All these measures were obtained by anterior segment optical coherence tomography. The measurements were taken immediately after fitting the lenses and 1, 6 and 12 months later. Prior to the study and at 1 year, we performed an objective test for diagnosing limbal stem cell deficiency (Limbokit). The mean vault was 201.7 ± 82.3 µm 20 min after fitting the contact lens; 189.4 ± 94.0 µm at 1 month; 165.1 ± 75.9 µm at 6 months and 142.1 ± 76.8 µm at 1 year, the values at 6 and 12 months being significantly different to baseline. After 1 year, the central corneal thickness had increased by 2.3% (IQR = 5.6), but the changes were only significant for the superior thickness. There is no limbal stem cell deficiency after 1 year of scleral contact lens use. After use of Rose K2 XL scleral contact lenses, the corneal physiology of patients with an irregular cornea remains unchanged, as assessed by corneal thickness measurements and the Limbokit test. In all cases, however, the vault decreased over time.

中文翻译:


使用巩膜隐形眼镜1年后角膜厚度和角膜缘的变化



评估佩戴 Rose K2 XL 透气巩膜隐形眼镜的角膜不规则患者随时间的生理变化。对不能耐受透气性角膜接触镜并佩戴 Rose K2 XL 巩膜镜的患者的 16 只眼睛进行的前瞻性研究。我们评估了中央穹窿以及中央和周边区域(2 至 5 毫米环面)的角膜厚度。所有这些测量都是通过眼前段光学相干断层扫描获得的。测量是在佩戴镜片后立即进行的,以及在 1、6 和 12 个月后进行的。在研究之前和一年时,我们进行了一项诊断角膜缘干细胞缺陷的客观测试 (Limbokit)。佩戴隐形眼镜 20 分钟后,平均穹窿为 201.7 ± 82.3 µm; 1 个月时为 189.4 ± 94.0 µm; 6 个月时为 165.1 ± 75.9 µm,1 年时为 142.1 ± 76.8 µm,6 个月和 12 个月时的值与基线显着不同。 1 年后,中央角膜厚度增加了 2.3%(IQR = 5.6),但仅上层厚度变化显着。使用巩膜隐形眼镜1年后,没有出现角膜缘干细胞缺乏的情况。通过角膜厚度测量和 Limbokit 测试评估,使用 Rose K2 XL 巩膜隐形眼镜后,角膜不规则患者的角膜生理机能保持不变。然而,在所有情况下,金库都会随着时间的推移而减少。
更新日期:2019-12-10
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