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Comparison of Standard and Transepithelial Corneal Cross-Linking for the Treatment of Keratoconus: A Meta-analysis.


ABSTRACT:

Purpose

To compare the clinical results of standard corneal cross-linking (SCXL) with transepithelial corneal cross-linking (TECXL) in progressive keratoconus using a meta-analysis.

Methods

PubMed, EMBASE, and Cochrane Central Register of Controlled Trials were searched up to June 2020 to identify relevant studies. The PRISMA guidelines were followed. Primary outcomes were change in uncorrected distance visual acuity and maximum keratometry (K max) after CXL. Secondary outcomes were change in corrected distance visual acuity, mean refractive spherical equivalent (MRSE), spherical and cylindrical error, endothelial cells density (ECD), and central corneal thickness (CCT).

Results

Sixteen studies with a total of 690 eyes (SCXL: 332 eyes; TECXL: 358 eyes) were included. At the last follow-up, SCXL provided a greater decrease in maximum keratometry (K max) than TECXL (weighted mean difference (WMD) -1.12; 95% confidence interval (CI) -1.96, -0.29). For the other outcomes, there were no statistically significant differences.

Conclusions

Except for a greater decrease in Kmax with SCXL group, both groups have a comparable effect on visual, pachymetric, and endothelial parameters at 24?months after surgery. Larger studies with a longer follow-up time are necessary to determine whether these techniques are comparable in the long term.

SUBMITTER: Di Y 

PROVIDER: S-EPMC7864754 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature

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Publications

Comparison of Standard and Transepithelial Corneal Cross-Linking for the Treatment of Keratoconus: A Meta-analysis.

Di Yu Y   Wang Jingyi J   Li Ying Y   Jiang Yang Y  

Journal of ophthalmology 20210129


<h4>Purpose</h4>To compare the clinical results of standard corneal cross-linking (SCXL) with transepithelial corneal cross-linking (TECXL) in progressive keratoconus using a meta-analysis.<h4>Methods</h4>PubMed, EMBASE, and Cochrane Central Register of Controlled Trials were searched up to June 2020 to identify relevant studies. The PRISMA guidelines were followed. Primary outcomes were change in uncorrected distance visual acuity and maximum keratometry (<i>K</i> <sub>max</sub>) after CXL. Sec  ...[more]

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