PMID- 29403606
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20220311
IS  - 2008-5842 (Print)
IS  - 2008-5842 (Electronic)
IS  - 2008-5842 (Linking)
VI  - 9
IP  - 11
DP  - 2017 Nov
TI  - Outcomes of photorefractive keratectomy in patients with atypical topography.
PG  - 5684-5688
LID - 10.19082/5684 [doi]
AB  - BACKGROUND: Photorefractive keratectomy (PRK) is at risk of serious complications 
      such as corneal ectasia, which can reduce corrected distance visual acuity. The 
      rate of complications of PRK is higher in patients with atypical topography. 
      OBJECTIVE: To determine the outcomes of photorefractive keratectomy in patients 
      with atypical topography. METHODS: This cross-sectional study was done in 2015 in 
      Shiraz in Iran. We included 85 eyes in this study. The samples were selected 
      using a simple random sampling method. All patients were under evaluation for 
      uncorrected distance visual acuity, corrected distance visual acuity, manifest 
      refraction, corneal topography, central corneal thickness using pentacam, 
      slit-lamp microscopy, and detailed fondus evaluation. The postoperative 
      examination was done 1-7 years after surgery. Data were analyzed using IBM SPSS 
      21.0 version. To analyze the data, descriptive statistics (frequency, percentage, 
      mean, and standard deviation), chi-square, and independent samples t-test were 
      used. RESULTS: We studied 85 eyes. Among the patients, 23 (27.1%) were male and 
      62 (72.9%) were female. Mean age of the participants was 28.25+/-5.55 years. Mean 
      postoperative refraction was - 0.37+/-0.55 diopters. Keratoconus or corneal ectasia 
      was not reported in any patient in this study. There was no statistically 
      significant difference between SI index before and after operation (p=0.736). 
      Mean preoperative refraction was -3.84 +/- 1.46 diopters in males and -4.20+/-1.96 
      diopters in females; thus there was not statistically significant difference (p = 
      0.435). CONCLUSION: PRK is a safe and efficient photorefractive surgery and is 
      associated with low complication rate in patients with atypical topography.
FAU - Movahedan, Hossein
AU  - Movahedan H
AD  - M.D., Associate Professor of Ophthalmology, Poostchi Ophthalmology Research 
      Center, Shiraz University of Medical Sciences, Shiraz, Iran.
FAU - Namvar, Ehsan
AU  - Namvar E
AD  - M.D., Resident of Ophthalmology, Ophtalmology Department, Shiraz University of 
      Medical Sciences, Shiraz, Iran.
FAU - Farvardin, Mohsen
AU  - Farvardin M
AD  - Professor of ophthalmology, Poostchi Ophthalmology Research Center, Shiraz 
      University of Medical Sciences, Shiraz, Iran.
LA  - eng
PT  - Journal Article
DEP - 20171125
PL  - Iran
TA  - Electron Physician
JT  - Electronic physician
JID - 101645099
PMC - PMC5783115
OTO - NOTNLM
OT  - Atypical topography
OT  - Keratoconus
OT  - Photorefractive keratectomy
COIS- Conflict of Interest: There is no conflict of interest to be declared.
EDAT- 2018/02/07 06:00
MHDA- 2018/02/07 06:01
PMCR- 2017/11/25
CRDT- 2018/02/07 06:00
PHST- 2016/05/12 00:00 [received]
PHST- 2016/08/30 00:00 [accepted]
PHST- 2018/02/07 06:00 [entrez]
PHST- 2018/02/07 06:00 [pubmed]
PHST- 2018/02/07 06:01 [medline]
PHST- 2017/11/25 00:00 [pmc-release]
AID - epj-09-5684 [pii]
AID - 10.19082/5684 [doi]
PST - epublish
SO  - Electron Physician. 2017 Nov 25;9(11):5684-5688. doi: 10.19082/5684. eCollection 
      2017 Nov.