AI Article Synopsis
- Phacoemulsification is a common cataract surgery technique, and this study aimed to compare the anatomical outcomes of high-flow versus low-flow methods regarding endothelial cell loss (ECL), central corneal thickness (CCT), and central macular thickness (CMT).
- Six randomized controlled trials with a total of 477 participants were analyzed, showing similar ECL and CCT results between both surgery types, although low-flow surgery resulted in less increase in CMT during certain post-operative periods.
- The study concludes that while both techniques have similar anatomical outcomes, further research focusing on visual outcomes is needed to validate these findings.
Article Abstract
Background: Phacoemulsification is an effective and widely performed technique in cataract surgery, but the comparative anatomical outcomes, including endothelial cell loss (ECL), central corneal thickness (CCT), and central macular thickness (CMT), between high-flow and low-flow phacoemulsification cataract surgery remain unclear.
Methods: This study followed Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) Statement. Random-effects models were applied to measure pooled mean differences (MD) with 95% confidence intervals (CI) of anatomical outcomes between high-flow and low-flow phacoemulsification cataract surgery. We judged overall certainty of evidence (CoE) based on Grading of Recommendations Assessment, Development and Evaluation (GRADE) criteria.
Results: We included six randomized controlled trials (RCTs) totaling 477 participants. The meta-analysis showed similar changes associated with these two surgery types in both ECL at postoperative days 2-14 (MD: -1.63%; 95% CI: -3.73 to 0.47%; CoE: very low), days 15-42 (MD: -0.65%; 95% CI -2.96 to 1.65%; CoE: very low) and day 43 to month 18 (MD: -0.35%; 95% CI: -1.48 to 0.78%; CoE: very low), and CCT at postoperative day 1 (MD: -16.37 μm; 95% CI: -56.91 to 24.17 μm; CoE: very low), days 2-14 (MD: -10.92 μm; 95% CI: -30.00 to 8.16 μm; CoE: very low) and days 15-42 (MD: -2.76 μm; 95% CI: -5.75 to 0.24 μm; CoE: low). By contrast, low-flow phacoemulsification showed less increase in CMT at postoperative days 15-42 (MD, -4.58 μm; 95% CI: -6.3 to -2.86 μm; CoE: low).
Conclusions: We found similar anatomical outcomes, except in CMT, for both high-flow and low-flow phacoemulsification cataract surgery. Future head-to-head RCTs on visual outcomes should confirm our findings.
Systematic Review Registration: PROSPERO, identifier: CRD42022297036.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9554630 | PMC |
| http://dx.doi.org/10.3389/fmed.2022.1021941 | DOI Listing |
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