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飞秒激光辅助植入完整与不完整角膜环治疗圆锥角膜

Femtosecond laser-assisted implantation of complete versus incomplete rings for keratoconus treatment.

作者信息

Hosny Mohamed, El-Mayah Esraa, Sidky Mohamed Karim, Anis Mohamed

机构信息

Department of Ophthalmology, Cairo University, Giza, Egypt.

出版信息

Clin Ophthalmol. 2015 Jan 20;9:121-7. doi: 10.2147/OPTH.S73855. eCollection 2015.

DOI:10.2147/OPTH.S73855
PMID:25657576
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4315561/
Abstract

PURPOSE

To compare complete versus incomplete ring implantation for keratoconus correction.

METHODS

We investigated 25 eyes of keratoconic patients, of which 15 had femtosecond-assisted MyoRing corneal implantation (Group 1) and 10 had femtosecond-assisted Keraring segments (Group 2). Uncorrected distance visual acuity (UCVA), best corrected distance visual acuity (BCVA), mean K (K m), sphere, topographic cylinder, and corneal asphericity value (Q-value) were measured in all eyes preoperatively and at 4 weeks postoperatively (1 month).

RESULTS

In Group 1, the K m change was -6.15±2.16 D, with a mean change in sphere of 4.45±2.18 D and a mean change in refractive cylinder of 2.32±3 D. UCVA change was -0.57±0.273 logarithm of the minimum angle of resolution (LogMAR), BCVA change was -0.2±0.27 (LogMAR), and the Q-value change was 0.43±2.6. In Group 2, the K m change was -3.15±1.68 D, UCVA change was -0.48±0.37 (LogMAR), BCVA change was -0.09±0.15 (LogMAR), and the Q-value change was 0.5±0.21. Changes in the means did not significantly differ between groups, except for the K m change, which was significantly greater in Group 1 than in Group 2 (P=0.05).

CONCLUSION

Both complete ring and ring segment implantation are effective for improving corneal and visual parameters in keratoconus. Complete ring implantation may have a greater flattening effect on the anterior corneal surface.

摘要

目的

比较全环植入与半环植入矫正圆锥角膜的效果。

方法

我们对25例圆锥角膜患者的眼睛进行了研究，其中15例接受了飞秒辅助的MyoRing角膜植入术（第1组），10例接受了飞秒辅助的Keraring半环植入术（第2组）。所有眼睛在术前及术后4周（1个月）测量未矫正远视力（UCVA）、最佳矫正远视力（BCVA）、平均角膜曲率（K m）、球镜度数、地形性柱镜度数及角膜非球面性值（Q值）。

结果

第1组，K m变化为-6.15±2.16 D，球镜度数平均变化为4.45±2.18 D，屈光性柱镜度数平均变化为2.32±3 D。UCVA变化为-0.57±0.273最小分辨角对数（LogMAR），BCVA变化为-0.2±0.27（LogMAR），Q值变化为0.43±2.6。第2组，K m变化为-3.15±1.68 D，UCVA变化为-0.48±0.37（LogMAR），BCVA变化为-0.09±0.15（LogMAR），Q值变化为0.5±0.21。除K m变化外，两组均值变化差异无统计学意义，第1组K m变化显著大于第2组（P = 0.05）。

结论

全环植入和半环植入对改善圆锥角膜的角膜和视觉参数均有效。全环植入对角膜前表面可能有更大的 flattening 效果。 （注：flattening 这个词在医学语境中可能是指“变平”的意思，此处直接保留英文，可能原文有误或有特定专业含义未准确翻译）

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5f08/4315561/29fc14ef481a/opth-9-121Fig6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5f08/4315561/38f997ca4f10/opth-9-121Fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5f08/4315561/9795d0f964c9/opth-9-121Fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5f08/4315561/c39866e26cee/opth-9-121Fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5f08/4315561/e508fc6aaccf/opth-9-121Fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5f08/4315561/d601da365ab8/opth-9-121Fig5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5f08/4315561/29fc14ef481a/opth-9-121Fig6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5f08/4315561/38f997ca4f10/opth-9-121Fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5f08/4315561/9795d0f964c9/opth-9-121Fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5f08/4315561/c39866e26cee/opth-9-121Fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5f08/4315561/e508fc6aaccf/opth-9-121Fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5f08/4315561/d601da365ab8/opth-9-121Fig5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5f08/4315561/29fc14ef481a/opth-9-121Fig6.jpg

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