scholarly journals The Effect of Optical Zone Decentration on Lower- and Higher-Order Aberrations after Photorefractive Keratectomy in a Cat Model

2007 ◽  
Vol 48 (12) ◽  
pp. 5806 ◽  
Author(s):  
Jens Bu¨hren ◽  
Geunyoung Yoon ◽  
Shawn Kenner ◽  
Scott MacRae ◽  
Krystel Huxlin
Keyword(s):  
Higher Order ◽  
Photorefractive Keratectomy ◽  
Higher Order Aberrations ◽  
Optical Zone ◽  
Cat Model

scholarly journals Higher-order aberrations after wavefront-optimized photorefractive keratectomy and laser in situ keratomileusis

2009 ◽  
Vol 35 (2) ◽  
pp. 260-264 ◽  
Author(s):  
Bradley J. Randleman ◽  
Claudia E. Perez-Straziota ◽  
Michelle H. Hu ◽  
Alfred J. White ◽  
Evan S. Loft ◽  
...  
Keyword(s):  
Higher Order ◽  
Laser In Situ Keratomileusis ◽  
Photorefractive Keratectomy ◽  
Higher Order Aberrations

Comparison of postoperative higher-order aberrations and contrast sensitivity: Tissue-saving versus conventional photorefractive keratectomy for low to moderate myopia

2010 ◽  
Vol 36 (10) ◽  
pp. 1732-1740 ◽  
Author(s):  
Hassan Hashemi ◽  
Rahman Nazari ◽  
Javad Amoozadeh ◽  
Amir Houshang Beheshtnejad ◽  
Mahmoud Jabbarvand ◽  
...  
Keyword(s):  
Contrast Sensitivity ◽  
Higher Order ◽  
Photorefractive Keratectomy ◽  
Higher Order Aberrations

scholarly journals Higher-order aberrations following wavefront-guided photorefractive keratectomy and laser in situ keratomileusis

2021 ◽  
Vol 1 (2) ◽  
pp. 100-104
Author(s):  
Esra Vural ◽  
Deniz Kilic ◽  
Ayse Cicek ◽  
M. Rasit Sirem ◽  
Necati Duru ◽  
...  
Keyword(s):  
Higher Order ◽  
Laser In Situ Keratomileusis ◽  
Photorefractive Keratectomy ◽  
City Hospital ◽  
Higher Order Aberrations ◽  
Significant Difference ◽  
Manifest Refraction ◽  
Group A ◽  
The Mean

Background: We aimed to evaluate higher-order aberrations (HOAs) following wavefront-guided photorefractive keratectomy (PRK) and laser in situ keratomileusis (LASIK) in patients with myopia and myopic astigmatism. Methods: This retrospective observational case-control study included patients who underwent wavefront-guided PRK (40 eyes of 20 patients) or LASIK (40 eyes of 20 patients) between August 2018 and November 2018 at the refractive surgery unit of Kayseri City Hospital Eye Clinic, Turkey. The corrected distance visual acuity (CDVA), manifest refraction, corneal topography, and HOAs were evaluated preoperatively and 3 months postoperatively in all patients. Results: The mean age ± standard deviation (SD) was 27.13 ± 5.54 years and 29.10 ± 4.38 years in the PRK and LASIK groups, respectively (P = 0.06). Both groups had a mean CDVA of 1.00. The mean ± SD of spherical and spherical equivalent values was -2.09 ± 1.56 diopter (D) and -3.03 ± 1.72 D in the PRK group and -2.23 ± 1.69 D and -3.35 ± 1.71 D in the LASIK group, respectively (P = 0.58). When the preoperative and postoperative HOAs and root mean square (RMS) values (for a 6-mm pupil diameter) were compared in the PRK group, a significant difference was found in vertical coma and total RMS values (P = 0.003 and P ˂ 0.001, respectively); in the LASIK group, there was a significant difference in preoperative and postoperative vertical coma and total RMS values (P = 0.0.001 and P ˂ 0.001, respectively). There was no significant difference in preoperative and postoperative vertical coma values between the two groups (P = 0.735 and P = 0.583, respectively). Conclusions: In terms of HOAs, total RMS values decreased significantly and vertical coma values increased significantly at 3 months postoperatively in both PRK and LASIK groups. However, there were no differences between the two groups.

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