ABSTRACT
Background: One of the most widely performed surgical procedures nowadays is cataract surgery combined with monofocal intraocular lens implantation (IOL). Monofocal IOLs can compensate for the spherical refractive error but not astigmatism. Thus, patients with astigmatism are unable to see well after surgery without spectacles. A new generation of IOLs called toric IOLs, improve uncorrected visual acuity in eyes with high astigmatism due to a specific lens design. This study aimed to present a practical method of toric intraocular lens (IOL) implantation based on a refractive power analyzer system and slit-lamp observation.Material & Methods:This prospective study comprised 30 patients who underwent toric IOL implantation with cataract extraction at the Department of Ophthalmology, National Institute of Ophthalmology, Dhaka, Bangladesh. This study was conducted from Jan 2021 to Dec 2021. Approval from the local ethical committee was obtained.Results:The study included 45 eyes of 30 patients. The sex distribution of the study patients where the male was 18(60%) and the female was 12(40%). In the age distribution of the study, 5(16.67%) patients were from the 60-69 range, 10(33.33%) patients were from the 70-79 range, and 15(50.00%) patients were from the 80-89 range. The patients’ demographic variables consequently. Changes in visual acuity and refraction are shown in table-4 thorough preoperative and postoperative. Postoperative IOL alignment methods are shown in table-5, the mean±SD of the slit-lamp target was 2.55±2.76 and in the range, of 0.0 to 12.0, the mean±SD of the corneal analyzer target was 2.55±1.98 and range was 0.0 to 11.0, and the mean±SD of the slit-lamp corneal analyzer was 3.27±2.98 and range was 0.0 to 16.0.Conclusions:We studied 2 methods of assessing toric IOL alignment postoperatively and found no significant difference between them. Both were reliable and predictable. In addition, we found that the simple preoperative marking technique we used yielded toric IOL alignment that was as accurate as that obtained with other commonly used techniques and that was within a clinically acceptable level.