パネル法を用いてトーリック眼内レンズの軸合わせを行った手術成績

Purpose: We have reported a panel with a protractor, which can easily align the axis of a toric intraocular lens during cataract surgery, at the Annual Meeting of the Japanese Society of Ophthalmic Surgery in 2011. Here, we report the results of surgery using this panel.<BR>Subjects: Seventy-eight eyes of 54 patients (age, 61-88 years range, 76.1 ± 6.1 years) who underwent eye surgery were during June 2010 to July 2011 were included in the study. In these patients, a toric intraocular lens (Acrysof^® IQ Toric: SN6AT3-5) was inserted and aligned to the axis by using the panel method. <BR>Methods: Before surgery, an anterior ocular segment image was obtained with the patient in the sitting position by using a camera attached a slit-lamp microscope. Marks such as iris patterns or pigments were noted in the image. A personal computer was used to insert an image of a protractor over this image, and the angle from a mark to the axis of the lens was calculated. The panel was put on the ocular segment image during the surgery, and a protractor was attached to the panel. The angle from an iris mark to the lens axis was measured, and a line was drawn on the panel. After the intraocular lens was inserted, the surgeon rotated the lens and aligned the mark that indicated the lens axis to this line. uncorrected visual acuity, corrected vision, subjective astigmatism, and the objective astigmatism were measured before surgery and 1 week, 1 month, and 3 months after surgery.<BR>Results: The average uncorrected visual acuity was 0.43 before surgery and 0.84 at 3 months after surgery. The average corrected vision was 0.71 before surgery and 1.10 at 3 months after surgery. The average objective astigmatism was 1.79 ± 0.83 D before surgery and 0.90 ± 0.51 D at 3 months after surgery. The average subjective astigmatism was 1.31 ± 0.88 D before surgery and 0.55 ± 0.47 D at 3 months after surgery. The axial gap with a schedule axis was 6.22 ± 6.10 degrees.<BR>Conclusion: Our results for uncorrected visual acuity and reduction of subjective astigmatism with the panel method were equivalent to the results reported previously.