P S Moulick1, V K Mohindra2, V S Gurunadh3, Parth Patel4, Sandeep Gupta5, M A Khan6. 1. Professor and Head, Department of Ophthalmology, Armed Forces Medical College, Pune 411040, India. 2. Consultant & Head (Ophthalmology), Aster Hospital, Kuwait Road, Mankhool, Dubai 119428, UAE. 3. MG (Med) Southwestern Command, C/O 56 APO, India. 4. Resident, Department of Ophthalmology, Armed Forces Medical College, Pune 411040, India. 5. Associate Professor (Ophthalmology), Command Hospital (Eastern Command), Kolkata, India. 6. Professor & Head (Ophthalmology), Command Hospital (Air Forces) Bangalore, India.
Abstract
BACKGROUD: Modern day cataract surgery aims at a spectacle free vision which becomes difficult in cases with pre-operative astigmatism more than 1.5 D. Implantation of toric intra-ocular lenses (IOL) after phacoemulsification in such eyes is one of the ways to counteract this problem. METHODS: Thirty eyes with pre-operative astigmatism between 1.5 D and 4.5 D were implanted with toric IOLs following uneventful phaco-emulsification. The estimation of the axis of implantation of this toric IOL included calculating the surgically induced astigmatism (SIA) of the surgeon. RESULTS: Post-operatively, 20 (66.67%) patients had a visual acuity 6/9 or better and 17 (57%) had a visual acuity of 6/6 at 12 weeks. The mean postoperative uncorrected visual acuity (UCVA) was 0.12 ± 0.15 at 12 weeks. The difference between means of preoperative best corrected visual acuity (BCVA) LogMAR and postoperative UCVA at 12 wk LogMAR was found to be statistically significant at p = 0.001. Mean (SD) scores of pre-op astigmatism of study group was -2.20 (0.67) and residual astigmatism was -0.32 (0.44). CONCLUSIONS: The difference between means of pre-op astigmatism and residual astigmatism in the study group was significant at p = 0.001 with 95% CI -2.22 to -1.50. This significant difference was because of the toric IOL implantation.
BACKGROUD: Modern day cataract surgery aims at a spectacle free vision which becomes difficult in cases with pre-operative astigmatism more than 1.5 D. Implantation of toric intra-ocular lenses (IOL) after phacoemulsification in such eyes is one of the ways to counteract this problem. METHODS: Thirty eyes with pre-operative astigmatism between 1.5 D and 4.5 D were implanted with toric IOLs following uneventful phaco-emulsification. The estimation of the axis of implantation of this toric IOL included calculating the surgically induced astigmatism (SIA) of the surgeon. RESULTS: Post-operatively, 20 (66.67%) patients had a visual acuity 6/9 or better and 17 (57%) had a visual acuity of 6/6 at 12 weeks. The mean postoperative uncorrected visual acuity (UCVA) was 0.12 ± 0.15 at 12 weeks. The difference between means of preoperative best corrected visual acuity (BCVA) LogMAR and postoperative UCVA at 12 wk LogMAR was found to be statistically significant at p = 0.001. Mean (SD) scores of pre-op astigmatism of study group was -2.20 (0.67) and residual astigmatism was -0.32 (0.44). CONCLUSIONS: The difference between means of pre-op astigmatism and residual astigmatism in the study group was significant at p = 0.001 with 95% CI -2.22 to -1.50. This significant difference was because of the toric IOL implantation.
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