Purchase this article with an account.
V. Y. Chang, L. Wang, D. D. Koch; Peripheral Corneal Relaxing Incisions in Naturally Occurring Astigmatism. Invest. Ophthalmol. Vis. Sci. 2009;50(13):643.
Download citation file:
© ARVO (1962-2015); The Authors (2016-present)
To evaluate retrospectively the effectiveness of peripheral corneal relaxing incisions (PCRIs) for correcting naturally occurring corneal astigmatism.
In this retrospective case series, PCRIs were performed on 24 eyes (14 patients) with naturally occurring astigmatism, using a nomogram based on age and amount and meridian of refractive astigmatism. Preoperative uncorrected visual acuity (UCVA) and refractive astigmatism were compared to postoperative values, and vector analysis using the Holladay-Cravy-Koch formula was performed.
The percentage of eyes with an UCVA of 20/20 or better increased significantly from 0% preoperatively to 54% (13/24) postoperatively (p<.0001). Refractive astigmatism was reduced significantly from a mean of 1.66 diopters (D) to 0.46D (p<.0001), and the effect was stable up to the last follow-up visit. The percentage of eyes within +/-0.5 D and +/-1.0 D of cylinder increased by 75% and 66%, respectively (both p<.0001). One eye lost 2 lines of uncorrected visual acuity.
Peripheral corneal relaxing incisions are an effective approach for reducing naturally occurring corneal astigmatism.
This PDF is available to Subscribers Only