Outcomes of Photorefractive Keratectomy with Advanced Personalized (Customized) Technique in More than 2.00 Diopter Astigmatism

In spite of numerous studies demonstrated efficacy and safety of photorefractive keratectomy (PRK) by cross cylinder and WF-guided methods، only limited studies are done in the field of advanced methods such as advanced personalized technique (APT). This study was performed to compare pre- and post-operation visual acuity and refractive errors in patients with over two diopter astigmatism treated by APT method.

This clinical trial study performed on 16 sequential patients (10 men and 6 women) referred to Sadra clinic of Isfahan، Iran، in the year of 2011. After complete ocular examination، for both eyes of each patient، PRK by APT method was done. Six months after surgery، abrometry was done for patients.

32 eyes of 16 patients with the mean age of 28. 8 ± 6. 9 year were involve in this study. Visual acuity of both eyes increased from 2. 72 ± 3. 13 to 7. 06 ± 3. 3. Myopia of both eyes changed from -2. 18 ± 2. 29 to 0. 26 ± 0. 41 and astigmatism decreased from 3. 54 ± 1. 03 to 0. 75 ± 0. 66. All changes were statistically meaningful (P < 0. 0001 for all).

PRK by APT method significantly increases visual acuity، corrected and non-corrected vision and decreases myopia and astigmatism. Despite، further studies with more patients and longtime follow-up is recommended.