Cataract Surgery Outcomes: Comparison of 2.4 mm and 2.8 mm Clear Corneal Incisions

Abstract

Objective: To compare clinical outcomes of cataract surgeries with 2.4 mm and 2.8 mm clear corneal incisions. Materials and Methods: This retrospective study comprised 2 groups of cataract surgery cases with different wound lenghts of group 1; 2.4 mm and group 2; 2.8 mm. We evaluated 80 eyes of 72 patients with 3-month follow-ups. Procedures carried out using the temporal self-sealing incision technique. Measured intraoperative parameters included phacoemulsification time, mean cumulative dissipated ultrasound energy and total volume of balanced salt solution used. Keratometric data, specular microscopy and macular thickness were measured preoperatively, and postoperative 1 and 3 months. Vector analysis calculated the surgically induced astigmatism. SPSS 15.0 were used for statistical analysis. Results: There were no significant differences in intraoperative ultrasound energy, total phacoemulsification time and volume of balanced salt solution analyzed between two groups (p>0.05). There were no statistically significant difference between two groups in macular thickness alteration and endothelial cell loss (ECL) (p>0.05). The mean surgically induced astigmatism was significantly less in group 1 in each visit (p<0.05). Conclusion: Phacoemulsification surgery through a 2.4 mm incision size appeared to be safe and less surgically induced astigmatism.

‘Off the shelf’ toric intraocular lenses to allow better access in public healthcare: a randomised control study

“…In this study, OCCI were utilised to reduce up to 1.0D of corneal astigmatism in the OTS group. Kavşut et al 9 , reported a mean SIA of 0.26D using a 2.40mm keratome, and 0.40D with a 2.8mm keratome. Ernest et al 10 documented a mean SIA from a 2.20mm keratome of 0.25D and Can et al reported an SIA with a 2.80mm keratome of 0.46D 20 .…”

“…Paired OCCI on the steep axis have been shown to reduce corneal astigmatism during CS [9][10][18][19][20][21] . In this study, OCCI were utilised to reduce up to 1.0D of corneal astigmatism in the OTS group.…”

“…The OTS group subjects received either a 2.00D or 4.00D cylinder TIOL, with residual corneal astigmatism corrected by OCCI. The amount of astigmatism corrected by OCCI was estimated to be 0.25D, when using a 2.4-millimetre (mm) keratome, and 0.50D when using a 2.75mm keratome, permitting up to 1.00D of correction [9][10] . The choice of 2.00D or 4.00D TIOLs was based on the patient's baseline biometric astigmatism.…”

“…This study was designed to develop strategies to offset some of these problems by testing a model where TIOLs with only 2.0D or 4.0D cylindrical powers were implanted, with residual astigmatism corrected by OCCI. These two powers were chosen, as based on published studies [9][10] , we calculated we could correct up to 1.0D of residual corneal astigmatism with OCCI, allowing correction of cylindrical errors from 1.5D to 5.0D. The premise was that by using TIOLs with just two-cylinder powers, 'on-site' TIOL banks might be possible, as the number of lens combinations would reduce by almost 80% (from 441 to 98 based on the range described above) and potentially reduce overall costs.…”