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Review
. 2021 Jun;41(6):2293-2300.
doi: 10.1007/s10792-021-01779-0. Epub 2021 Mar 21.

Laser flare and cell photometry to measure inflammation after cataract surgery: a tool to predict the risk of cystoid macular edema

Michele De Maria  1   2 , Marco Coassin  3 , Danilo Iannetta  1 , Luigi Fontana  4
Affiliations
Review

Laser flare and cell photometry to measure inflammation after cataract surgery: a tool to predict the risk of cystoid macular edema

Michele De Maria et al. Int Ophthalmol. 2021 Jun.

Abstract

Purpose: To review the current adoption of laser flare and cell photometry (LFCP) in the setting of modern cataract surgery to analyze inflammation aiming to identify evidence of a correlation between LFCP values and the risk of cystoid macular edema (CME) development.

Methods: An extensive PubMed literature search was performed to review all the published studies investigating inflammation by LFCP after uncomplicated phacoemulsification. The following keywords were used: cataract surgery, cystoid macular edema, anterior chamber inflammation, laser flare, and cell photometry.

Results: Seventy-eight original articles investigating inflammation by LFCP were selected. Macula alterations were searched in 12 (15%) trials, by optical coherence tomography or fluorescein angiography in 11 (14%) and 1 (1%) studies, respectively. Among them, 9 (12%) papers investigated the correlation between LFCP values and cystic changes to the macula: 7 (9%) and 2 (3%) studies identified a positive and negative correlation, respectively. Three (4%) papers did not perform any correlation analysis.

Conclusion: CME, as a consequence of uncontrolled postoperative inflammation, is a common cause for unfavorable visual outcomes following uncomplicated phacoemulsification with IOL implantation. After surgery, intraocular inflammation is generally assessed by qualitative methods. Although well-established and practical in uveitis, they are inadequate to detect the modest inflammatory response that usually occurs after uneventful phacoemulsification. LFCP correlate with the chance of macula alteration after surgery and higher the values higher the risk of CME. The quantitative analysis of intraocular inflammation by LFCP after cataract surgery might be a tool to predict the risk of pseudophakic CME.

Keywords: Cataract; Cystoid macular edema; Inflammation; Laser flare and cell photometry; Phacoemulsification.

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