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术前角膜曲率计测量对中度近视准分子激光原位角膜磨镶术后视觉效果的影响。

The effect of preoperative keratometry on visual outcomes after moderate myopic LASIK.

作者信息

Christiansen Steven M, Neuffer Marcus C, Sikder Shameema, Semnani Rodmehr T, Moshirfar Majid

机构信息

John A Moran Eye Center, University of Utah, Salt Lake City, UT.

出版信息

Clin Ophthalmol. 2012;6:459-64. doi: 10.2147/OPTH.S28808. Epub 2012 Mar 21.

DOI:10.2147/OPTH.S28808
PMID:22536037
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3334209/
Abstract

PURPOSE

To evaluate visual outcomes in moderately myopic eyes with flat and steep corneas (preoperatively) that have been treated with laser-assisted in situ keratomileusis (LASIK).

PATIENTS AND METHODS

Records of ninety-six eyes with average preoperative keratometry (K) values between 39.9 and 42.0 diopters (D) (flat) were matched with 103 eyes with preoperative K values between 46.0 and 47.2 D (steep) that underwent LASIK between March 2007 and March 2010 for moderate myopia, and were retrospectively reviewed. The primary outcome measures used to determine the effect of preoperative keratometry on visual prognosis were refraction, visual acuity, change in keratometry (ΔK), and change in spherical equivalent (ΔSE), measured at 1, 3, 6, and 12 months postoperatively.

RESULTS

Significant differences were found at 6 months postoperatively between the flat group and steep group in SE (P = 0.029), sphere (P = 0.018), ΔK (P = 0.002), percentage of eyes achieving SE of -0.25 to + 0.25 D (P = 0.0125), -0.26 to -0.50 D (P = 0.003), -0.51 to -1.00 D (P = 0.044), and the percentage of eyes achieving uncorrected distance visual acuity of 20/15 or better (P = 0.0006).

CONCLUSION

Moderately myopic eyes with flatter corneas preoperatively have better visual prognosis following LASIK compared with moderately myopic eyes with steeper corneas.

摘要

目的

评估接受准分子原位角膜磨镶术（LASIK）治疗的术前角膜平坦和陡峭的中度近视眼中的视觉效果。

患者与方法

回顾性分析2007年3月至2010年3月间接受LASIK治疗的中度近视患者的记录，其中96只术前平均角膜曲率（K）值在39.9至42.0屈光度（D）（平坦）之间的眼睛与103只术前K值在46.0至47.2 D（陡峭）之间的眼睛相匹配。用于确定术前角膜曲率对视觉预后影响的主要观察指标包括术后1、3、6和12个月时的验光、视力、角膜曲率变化（ΔK）和等效球镜度变化（ΔSE）。

结果

术后6个月时，平坦组和陡峭组在等效球镜度（P = 0.029）、球镜（P = 0.018）、ΔK（P = 0.002）、等效球镜度达到-0.25至+ 0.25 D的眼百分比（P = 0.0125）、-0.26至-0.50 D的眼百分比（P = 0.003）、-0.51至-1.00 D的眼百分比（P = 0.044）以及未矫正远视力达到20/15或更好的眼百分比（P = 0.0006）方面存在显著差异。

结论

与术前角膜较陡峭的中度近视眼相比，术前角膜较平坦的中度近视眼在LASIK术后具有更好的视觉预后。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d8f3/3334209/599ed0894652/opth-6-459f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d8f3/3334209/589f4b68e301/opth-6-459f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d8f3/3334209/01b094e3d2a1/opth-6-459f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d8f3/3334209/97205540009b/opth-6-459f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d8f3/3334209/c1657b78425c/opth-6-459f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d8f3/3334209/d21c16e9447f/opth-6-459f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d8f3/3334209/599ed0894652/opth-6-459f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d8f3/3334209/589f4b68e301/opth-6-459f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d8f3/3334209/01b094e3d2a1/opth-6-459f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d8f3/3334209/97205540009b/opth-6-459f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d8f3/3334209/c1657b78425c/opth-6-459f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d8f3/3334209/d21c16e9447f/opth-6-459f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d8f3/3334209/599ed0894652/opth-6-459f6.jpg

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