%0 Journal Article
%T A Comparison Of Topographic and Refractive Effects from Arcuate Incisions in Keratoplasty SciDoc Publishers | Open Access | Science Journals | Media Partners
%A Ahmed MH
%A Sayed Saif MY
%A Terry MA
%A Zaki AA
%A Alshaarawy AM
%J Ophthalmology & Eye Science (IJOES)
%D 2018
%R http://dx.doi.org/10.19070/2332-290X-1700066
%X Purpose: To compare the topographic and refractive effects from the arcuate relaxing incisions in treating post-keratoplasty astigmatism after deep anterior lamellar keratoplasty (DALK), penetrating keratoplasty (PKP). Setting: A one center study: Devers Eye Institute, Portland, Oregon, USA. Design: Retrospective review of consecutive cases. Methods: The study is divided into two groups: DALK and PKP group. Each group contains 20 eyes with residual astigmatism more than 4 Diopters (D) 3 months after full suture removal. Subjects underwent arcuate relaxing incision at 90% depth of the thinnest point at the steepest hemi-meridian. The corneal and refractive astigmatism, spherical equivalent, refraction and BCSVA were compared preoperative and 3 months postoperative. Results: Topographic astigmatism improved by 3.5 ¡À 3.18 D in PKP, and 3.89 ¡À 4.92 D in DALK group (p-value = 0.051), Refractive astigmatism improved in DALK group by 2.9 ¡À 3.08 D and in PKP by 1.6 ¡À 2.64 D, (p-value = 0.163). The mean spherical equivalent changed by -0.72 ¡À 1.5 D in PKP, and -1.99 ¡À 2.45 D in DALK group, (p-value = 0.206). The Difference Vector in DALK group was 8.44 ¡À 13.54 D, and in PKP, it was 4.7 ¡À 2.12 D. Conclusion: The arcuate relaxing incision is an effective procedure for reducing post-keratoplasty astigmatism. There was a variation of response that may be due to the biomechanics of the healed graft; future studies should be using a Femtosecond laser in an extensive series of eyes with equivalent levels of astigmatism. This may also allow for a lower, tighter range of effect in both groups
%K n/a
%U https://scidoc.org/IJOES-2332-290X-05-601.php