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Year : 2020  |  Volume : 33  |  Issue : 2  |  Page : 630-635

Higher order aberration after wavefront-guided laser in-situ keratomileusis vs wavefront-guided photorefractive keratectomy

1 Department of Ophthalmology, Faculty of Medicine, Menoufia University, Menoufia, Egypt
2 Department of Ophthalmology, Tanta Ophthalmology Hospital, Tanta, Egypt

Correspondence Address:
Marwa M Ahmed Meliha
Tanta, Gharbia
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/mmj.mmj_360_19

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Objective The aim was to assess visual outcome and higher order aberrations between wavefront-guided laser in-situ keratomileusis (LASIK) and wavefront-guided photorefractive keratectomy (PRK). Background LASIK is the most popular and commonly performed procedure in the field of corneal refractive surgery. Laser refractive surgery works on the principle of modification of corneal refractive power by means of photoablation of the stromal tissue. Patients and methods A total of 30 patients (60 eyes) with errors of refraction and higher order aberration underwent wavefront-guided LASIK and wavefront-guided PRK. Follow-up was performed on the first day, fifth day, first week, first month, third month, and 6 months postoperatively, and wavefront ocular analysis was performed at the first month, third months, and 6 months postoperatively. Results This study included 60 eyes of 30 patients. The patients were divided into two groups: A and B. Wavefront-customized LASIK was performed on patients in group A, whereas patients in group B received wavefront-customized PRK. The age of the participants in group A ranged from 18 to 35 years. On the contrary, group B patients' age ranged from 19 to 36 years. Total higher order aberration root mean square in LASIK showed nonsignificant increase from 0.37 ± 0.15 (P = 0.922) preoperatively to 0.57 ± 0.17 (P = 0.764) postoperatively. It also showed nonsignificant increase in PRK from 0.38 ± 0.15 preoperatively to 0.59 ± 0.18 postoperatively. Conclusion The study showed significant improvement in visual acuity and refractive result, with increase of total higher order aberration root mean square.

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