First Author: K.Uchiyama JAPAN
Co Author(s): N. Kato
Purpose:
To describe a regular astigmatism that could not be corrected with AcrySof toric intraocular lens (IOL) implantation.
Setting:
Department of Ophthalmology, Kanazawa Red Cross Hospital
Methods:
Phacoemulsification with implantation of toric IOLs was performed in both eyes of a 79-year-old male patient. Preoperatively, his eyes revealed columnar corneal astigmatism with -2.5D Ax100 OD and -3.25D Ax80 OS. He underwent an uneventful phacoemulsification with toric IOL implantation (AcrySof SN6AT4 with cylinder power of 2.25 D OD, and SN6AT5 with cylinder power of 3.0 D OS). Postoperative follow-up was performed at 8 months.
Results:
The refractive cylinder was not decreased by the surgery. Postoperative refraction was s+0.5D c+2.5D Ax180 OD and c+2.0D Ax180 OS. Keratometric readings indicated that corneal astigmatism of -2.75D Ax100 OD and -2.75D Ax80 OS remained, and corneal topography showed that no significant change in corneal shape was induced by the surgery. The IOL position was centered, and no IOL rotation, deviation, or other complications occurred.
Conclusions:
The present case emphasizes the possibility that residual astigmatism may originate from the retina or other parts of the eye excluding the cornea or lens. Correction of corneal columnar astigmatism by toric IOL may not be adequate for correction of total refractive error for cataract surgery. FINANCIAL DISCLOSURE?: No
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