Your browser doesn't support javascript.
Comparison of Higher-Order Aberrations After Single-Step Transepithelial and Conventional Alcohol-Assisted Photorefractive Keratectomy
Özülken, Kemal; Ilhan, Çagri.
  • Özülken K; TOBB ETU Medical School, Department of Ophthalmology, Ankara, Turkey.
  • Ilhan Ç; Hatay State Hospital, Clinic of Ophthalmology, Hatay, Turkey.
Turk J Ophthalmol ; 50(3): 127-132, 2020 06 27.
Article in English | MEDLINE | ID: covidwho-831232
ABSTRACT

Objectives:

To compare the asphericity and higher-order aberration (HOA) outcomes of single-step transepithelial photorefractive keratectomy (tPRK) and conventional alcohol-assisted PRK (aaPRK) in patients with myopia and myopic astigmatism. Materials and

Methods:

Of the 108 eyes of 54 patients enrolled in the study, tPRK was performed on 54 (50%) eyes and aaPRK was performed on 54 (50%) eyes. The following parameters were compared corrected distance visual acuity (CDVA), spherical equivalent (SE), flat and steep keratometry, intraocular pressure, central corneal thickness, asphericity, and HOAs including horizontal and vertical coma, horizontal and vertical trefoil, spherical aberration, second-order vertical coma, and aberration coefficient.

Results:

The demographic and baseline characteristics were similar between the two groups (p>0.05, for all). The aberration coefficient value was significantly lower in patients treated with aaPRK compared to patients treated with tPRK at postoperative 3 months, 6 months, and 1 year (p=0.022, p=0.019, and p=0.017, respectively). Differences in the other variables were statistically insignificant (p>0.05 for all).

Conclusion:

Both tPRK and aaPRK procedures obtain similar postoperative CDVA, SE, asphericity, and HOA outcomes, except the aberration coefficient value.
Subject(s)
Keywords

Full text: Available Collection: International databases Database: MEDLINE Main subject: Refraction, Ocular / Visual Acuity / Photorefractive Keratectomy / Epithelium, Corneal / Ethanol / Lasers, Excimer / Corneal Wavefront Aberration Type of study: Cohort study / Diagnostic study / Experimental Studies / Observational study / Prognostic study / Randomized controlled trials Limits: Adolescent / Adult / Female / Humans / Male / Middle aged / Young adult Language: English Journal: Turk J Ophthalmol Year: 2020 Document Type: Article Affiliation country: Tjo.galenos.2019.14554

Similar

MEDLINE

...
LILACS

LIS


Full text: Available Collection: International databases Database: MEDLINE Main subject: Refraction, Ocular / Visual Acuity / Photorefractive Keratectomy / Epithelium, Corneal / Ethanol / Lasers, Excimer / Corneal Wavefront Aberration Type of study: Cohort study / Diagnostic study / Experimental Studies / Observational study / Prognostic study / Randomized controlled trials Limits: Adolescent / Adult / Female / Humans / Male / Middle aged / Young adult Language: English Journal: Turk J Ophthalmol Year: 2020 Document Type: Article Affiliation country: Tjo.galenos.2019.14554