Indian journal of ophthalmology
October 2, 2026 · via Europe PMC
Effect of 2.2 mm opposite clear corneal incisions post phacoemulsification on total corneal astigmatism in a tertiary eye hospital of Eastern India.
Raj A, Khanam Z, Meshram S, Kumar A, Tiwari P, Singh P, Nishant P.
AI summary — for doctors, generated from the abstract only
Two 2.2 mm opposite clear corneal incisions reduced corneal astigmatism in mild eyes after cataract surgery in a small series.
What was studied
Retrospective cohort of 39 eyes undergoing phacoemulsification with monofocal IOL and 2.2 mm OCCIs over 3 months, grouped by baseline astigmatism.
Key findings
- OCCIs significantly reduced astigmatism in the mild group (1.22 to 0.87 D).
- The approach is described as safe, effective and low cost for mild-to-moderate astigmatism.
- Final UCVA and manifest astigmatism were assessed at 3 months.
Clinical relevance
An inexpensive way to treat small astigmatism at cataract surgery without toric lenses.
Who should care
Limitations
Small retrospective cohort; moderate and severe group results are truncated.
Consider OCCIs for mild-to-moderate astigmatism where toric IOLs are not available.
This is an AI-generated summary of the published abstract, not a clinical recommendation. It may not reflect the full text or subsequent updates — verify against the original source before acting on it.
Abstract
Purpose
To determine the change in total corneal astigmatism (ΔTK) in patients undergoing cataract surgery with 2.2 mm opposite clear corneal incisions (OCCIs).
Design
Retrospective cohort study.
Methods
This study determined the change in ΔTK in patients undergoing phacoemulsification with monofocal intraocular lens implantation with 2.2 mm OCCIs using an image-guided system over 1 month and 3 months postoperatively from 1st January 2023 to 30th June 2024 at a tertiary eye hospital. Manifest astigmatism and final uncorrected visual acuity (UCVA) were analyzed at the 3rd month postoperatively. The secondary objective was to elicit the change in astigmatism from baseline to the 3rd month in different astigmatism groups: Mild (1-1.5 diopters [D]), moderate (1.6-2 D), and severe (>2D).
Results
A total of 39 eyes were included in the analysis. This study showed that 2.2 mm OCCIs significantly reduced astigmatism in mild (ΔTK: 1.22 ± 0.17-0.87 ± 0.25 D; P < 0.001) and moderate (ΔTK: 1.67 ± 0.15-1.27 ± 0.41 D; P < 0.001) groups from baseline to 1st month and 3rd month. Manifest refraction showed no significant astigmatism change at 1 month but a significant reduction occurred by 3 months. UCVA improved significantly in the mild group from 25.6% to 48.7%, achieving 0-0.2 Logarithm of the Minimum Angle of Resolution (LogMAR) by 3 months, while the moderate and severe groups showed no significant changes.
Conclusion
Using a 2.2 mm keratome for the main incision as well as OCCIs during phacoemulsification stands out as a safe, effective, and notably low-cost method for correcting a mild-to-moderate degree of astigmatism.
DOI
10.4103/ijo.ijo_2670_25
PMID
42825766
Research metadata (titles, abstracts, authors, publication dates) is sourced from Europe PMC, which aggregates content from PubMed/MEDLINE, PubMed Central, and other providers under the U.S. National Library of Medicine (NLM/NCBI). NLM does not claim copyright on abstracts; the original journal publishers or authors may hold rights to the full articles. AI-generated summaries are derived only from the abstract, never the full text, and are always labeled as AI-generated.
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