Abstract
Purpose. To evaluate the refractive and the quality of vision outcomes of toric IOL implantation in patients with low astigmatism. Design. Prospective study of single-arm. Methods. Patients with corneal astigmatism range from 0,75 D to 1,5 D and cataract that underwent cataract surgery with toric IOL. The measurements were performed preoperatively and 6 weeks after the surgery. Patients were evaluated for visual acuity with and without correction, contrast sensitivity, static and dynamic refraction, and quality of life questionnaire. Pre- and postoperative values were compared and their variations were evaluated for linear correlation. Results. 21 eyes of 21 patients. Postoperative mean uncorrected visual acuity was 0.80 ± 0.19, and the best corrected visual acuity was 0.97 ± 0.15. p < 0.001 compared to preoperative values. The average postoperative refractive cylinder was −0.34 ± 0.39. The questionnaire's total value before and after surgery was, respectively, 43.20 ± 15.76 and 79.70 ± 10.11 (p < 0.001). The correlation coefficients between the values of the questionnaire variation and the UCVA, BCVA, and CS variation were, respectively, 0.548 (p = 0.005), 0.508 (p = 0.009), and 0.409 (p = 0.033). Conclusion. Patients with low astigmatism who underwent phacoemulsification with toric IOL implantation experienced significant decrease in refractive astigmatism and improvement in their quality of life.
Highlights
Freedom from glasses is an increasingly important objective in cataract surgery
A failure to correct refractive errors associated with astigmatism during cataract surgery may compromise the patient’s ability to be free of glasses
Despite the excellent refractive results for toric lenses, which provide a visual acuity greater than 20/40 in more than 80% of cases and freedom from glasses in approximately 70% of cases [3], residual refractive astigmatism and complaints regarding vision still persist after surgery
Summary
Freedom from glasses is an increasingly important objective in cataract surgery. A failure to correct refractive errors associated with astigmatism during cataract surgery may compromise the patient’s ability to be free of glasses. The prevalence of corneal astigmatism is 95% in the population. Recent studies on different ethnic groups have confirmed that among cataract patients; approximately 60% present a prevalence of corneal astigmatism lower than 1.5 diopters (D) and greater than 0.75 D [1, 2]. Despite the excellent refractive results for toric lenses, which provide a visual acuity greater than 20/40 in more than 80% of cases and freedom from glasses in approximately 70% of cases [3], residual refractive astigmatism and complaints regarding vision still persist after surgery
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