ABSTRACT
Purpose: To evaluate postoperative visual acuity, refractivestatus and rotational stability of toric intraocular lens (IOL)in correcting pre-existing corneal astigmatism.Methods: A total of 69 patients with topographic cornealastigmatism of 1.0 Diopter (D) and above who underwentcataract surgery between June 2015 and December 2016were included in this retrospective observational study. Allpreoperative toric IOL calculations were performed usingimmersion biometry. Appropriate formula to calculate toricIOL power was applied (SRK/T, Holladay 1 or Hoffer Qformula). All patients undergone similar uncomplicatedphacoemulsification with implantation of AcrySoft IQ SN6ATtoric IOL of different powers. Visual outcome, refractivestatus and axis of lens were evaluated at six weekspostoperatively. Ethical approval from the Ministry of HealthMedical Research Ethics Committee was obtained prior tocommencement of study.Results: The mean refractive astigmatism decreased from1.69 D ±1.10 (SD) to 0.81 D ± 0.40 (SD) at six weekspostoperatively. The mean postoperative sphericalequivalent was at -0.37 D ±0.64 (SD). Mean LogMAR foruncorrected and corrected distance visual acuity in sixweeks postoperative patients was at 0.29 ±0.16 (SD) and 0.12±0.12 (SD) respectively. Intraoperative to 6 weeks ofpostoperative comparison of IOL axis alignment showed lowlevels of rotation (mean 3.21 ±2.52 degrees).Conclusion: Cataract surgery with implantation of toric IOLwas stable and effective in improving pre-existing regularcorneal astigm
ABSTRACT
·A 27-year-old man was stung by a bee presented with severe pain in the right eye. It was associated with reduced vision and swelling of the eyelids. A retained stinger was identified at the center of the cornea, surrounded by dense corneal oedema and numerous folds in the Descemet's membrane. The sting was removed completely. He subsequently developed persistent corneal oedema and heterochromia iridis. He was treated with intensive topical steroids. He underwent penetrating keratoplasty five months after the injury. His visual acuity was satisfactory one year after the surgery. Corneal oedema is an uncommon complication of bee sting injuries. It can be persistent and results in severe visual impairment. An early penetrating keratoplasty offers a good visual outcome after bee sting injury.