ABSTRACT
Background:Phacoemulsification requires a smaller incision, few or no stitches are needed and the patient's recovery time is usually shorter when using a foldable IOL.Limbal Relaxing Incisions, or LRIs, are partial thickness corneal incisions strategically placed to reduce or eliminate pre-existing astigmatism duringcataractsurgeryorrefractivelensexchangesurgery. Present study was aimed to evaluate the visual and refractive outcome in patients undergoing limbal relaxing incision during clear corneal phacoemulsification surgery with foldable intra ocular lens.Material And Methods:Present study was single-center, prospective, observational study, conducted in patients of age more than 18-75 years, with clear cornea and regular astigmatism on keratometry, with preoperative astigmatism more than or equal to 0.5D on keratometry, fit for phacoemulsification cataract surgery with foldable IOL.Result:A total of 44 eyes of 44 patients who for cataract phacoemulsification surgery, mean age of the patient was 56.98 ± 05.98 years. Refractive acceptance preoperatively was 0.50 D to 2.0 D.Onslit lamp examination showed most common Cataract Nucleus grade is NS 3 with PSC preoperatively. We observed improved diopteric difference by automated keratometry on postoperative 90th day as compared to preoperative values. Majority of patients had Preop Keratometric Difference (K1-K2) of 1.5 D, all required LRI Incisions length of 4 clock hours (60°).The difference between the visual acuity preoperatively and post operatively was found to be statistically significant with a p<0.01 by employing the statistical test Analysis of Variance (ANOVA). Visual outcome a change after limb relaxing incisions statistically significant. Keratometry changes preop and postop is statistically significant with p value <0.001.Conclusion:Visual and refractive outcome changes as improved best corrected visual acuity (BCVA), decrease in Corneal Astigmatism was noted in patients undergoing limbal relaxing incision during clear corneal phacoemulsification surgery with foldable intra ocular lens
ABSTRACT
Background:Surgically induced astigmatism (SIA) is astigmatism that is created by incisions in cataract surgery; change in both the power and to a lesser degree, orientation of the principal meridians following a corneal incision. Prese nt study was aimed to study change in vision and astigmatic refractive error postoperativelyin patientsundergoing clear corneal phacoemulsificationsurgerywithfoldableintraocularlens.Material And Methods:Present study was hospital based, prospective, observational study, conducted in patients posted for phacoemulsification cataract surgery with foldable IOL with clear cornea and regular astigmatism on keratometry, with preoperative astigmatism more than or equal to 0.5D on keratometry, willing to participate in study.Result:In present study,44 eyes of 44 patients were considered for study. Mean age of the patient is 56.98 ± 5.98 years. There were 29 males and 15 females. Right eye surgery was done in 18 eyes and left eye surgery was done in 26 eyes. Refractive acceptance preoperatively was 0.50 D to 2.0 D. Mean IOL power was 22.7 ± 0.801. Preoperatively mainly eyes had best visual activity between 6/24 to 6/18 while visual activity range from 6/60 to 6/12. Improved vision postoperatively day 90th where vision was 6/6 unaided in 24 eyes out of44 eyes and 6/9 in 14 eyes respectively. Majority of patients had Preop Keratometric Difference (K1-K2) of 1.5 D, all required LRI Incisions length of 4 cloc k hours (60°). On postoperative 90th day, improved dioptric difference by automated keratometry ascompared to preoperative values. LRI was slightly more effective in patients above 50 years as compared to in patients below 50 years.Conclusion:In patientsundergoing clearcornealphacoemulsification surgery with foldable intra-ocular lens, postoperatively improved vision and reduced astigmatic refractive error is noted.