Clinical ophthalmology (Auckland, N.Z.) · 2025
Optimal Timing for Intraocular Pressure Measurement Following Femtosecond Laser-Assisted Cataract Surgery: A Systematic Review and Meta-Analysis.
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Herspiegel William J, Yu Brian E, Malvankar-Mehta Monali S, Hutnik Cindy M L
Аннотация
PURPOSE: Femtosecond laser-assisted cataract surgery (FLACS) has increasingly been adopted worldwide. Lagging behind is evidence-based consensus regarding optimal timing for intraocular pressure (IOP) measurement following FLACS. The purpose of this study was to determine if enough evidence currently exists to guide best practice.
METHODS: A comprehensive literature search was performed on MEDLINE and EMBASE until February 6th, 2023. Articles reporting IOP measurements following uncomplicated FLACS were screened. For change in IOP at various post-operative timepoints, standardized mean difference (SMD) was calculated as the mean difference in IOP from baseline. Risk of Bias Assessment was conducted following data extraction.
RESULTS: The meta-analysis incorporated six randomized clinical studies involving a total of 1356 eyes from 1032 participants. Post-operative day one was the only timepoint with a non-significant increase in IOP (SMD = -0.08 [95% CI: -0.41 to +0.24]) compared to the 7-days, 30-days, 60 to 90-days, and 180-days follow-up periods. All studies except one utilized an ophthalmic viscosurgical device (OVD) in their procedure; this was the only publication that reported a decrease in IOP from baseline within the 1-day follow-up period.
CONCLUSION: The results suggest that the optimal time to measure IOP is within the first 24 hours after FLACS. However, these findings are limited by a small study sample. Future prospective clinical trials may be beneficial to determine if specific timepoints within the first 24 hours exist to optimize outcomes and patient reported experiences.
METHODS: A comprehensive literature search was performed on MEDLINE and EMBASE until February 6th, 2023. Articles reporting IOP measurements following uncomplicated FLACS were screened. For change in IOP at various post-operative timepoints, standardized mean difference (SMD) was calculated as the mean difference in IOP from baseline. Risk of Bias Assessment was conducted following data extraction.
RESULTS: The meta-analysis incorporated six randomized clinical studies involving a total of 1356 eyes from 1032 participants. Post-operative day one was the only timepoint with a non-significant increase in IOP (SMD = -0.08 [95% CI: -0.41 to +0.24]) compared to the 7-days, 30-days, 60 to 90-days, and 180-days follow-up periods. All studies except one utilized an ophthalmic viscosurgical device (OVD) in their procedure; this was the only publication that reported a decrease in IOP from baseline within the 1-day follow-up period.
CONCLUSION: The results suggest that the optimal time to measure IOP is within the first 24 hours after FLACS. However, these findings are limited by a small study sample. Future prospective clinical trials may be beneficial to determine if specific timepoints within the first 24 hours exist to optimize outcomes and patient reported experiences.