Trial reportCornea2020
Corneal Scheimpflug Densitometry in Photorefractive Keratectomy Candidates.
Trial report in Cornea, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
13 citing papers in PubMed.
- Seasonal Effects on Corneal Densitometry and Haze After Mitomycin C-Assisted Photorefractive Keratectomy.Journal of clinical medicine · 2026Article
- Corneal optical densitometry and anterior segment parameters in healthy upper Egyptian population: a prospective observational cross-sectional study.BMC ophthalmology · 2025Observational
- Assessing Changes in Corneal Densitometry in Patients After Small Incision Lenticule Extraction (SMILE).Cureus · 2024Article
- Corneal densitometry in Chinese adults with healthy corneas: associations with sex, age, ocular metrics, and optical characteristics.BMC ophthalmology · 2024Observational
- The Impact of Standard Cross-Linking on the Corneal Optical Density-Age Relationship in Keratoconus After Mechanical Stripping of the Epithelium.Journal of ophthalmology · 2024Article
- Comparison of corneal and lens density measurements obtained by Pentacam and CASIA2 in myopes.BMC ophthalmology · 2023Article
- Distribution of 50-layer corneal densitometry values and related factors.International ophthalmology · 2023Article
- Seven-year corneal densitometry changes after small incision lenticule extraction and femtosecond laser-assisted in situ keratomileusis.Lasers in medical science · 2023Article
- Age-related changes in Scheimpflug corneal densitometry and their correlations with corneal topographic measurements in a healthy Chinese population.Quantitative imaging in medicine and surgery · 2023Article
- Determination of the repeatability of corneal densitometry as measured with a Scheimpflug camera device in refractive surgery candidates.Indian journal of ophthalmology · 2023Article
- Assessing and compensating for the confounding factors in Scheimpflug-based corneal densitometry.Biomedical optics express · 2022Article
- An optional surgical technique for obtaining lamellar donor grafts: a pilot study.BMC ophthalmology · 2022Article
- Repeatability of Corneal Densitometry Measurements using a Scheimpflug Camera in Healthy Normal Corneas.Journal of current ophthalmologyArticle
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo describe the normative data of corneal densitometry in photorefractive Keratectomy (PRK) candidates by using a Scheimpflug camera.
methodsFive hundred twenty-two eyes of 261 PRK candidates that underwent comprehensive optometric and ophthalmic examinations were enrolled in this study. Corneal densitometry values were obtained using a Scheimpflug camera (Pentacam HR; Oculus Optikgeräte GmbH, Wetzlar, Germany) and displayed in grayscale units (GSU).
resultsOf 261 participants, 187 (71.6%) were women. The mean age of the participants was 28.79 ± 5.02 years (range: 21-40 years). The mean entire corneal densitometry was 14.86 ± 2.37 GSU. According to corneal depth, maximum and minimum densitometry values were seen in the anterior (30.28 ± 7.42 GSU) and posterior (9.86 ± 2.08 GSU) layers, respectively (P < 0.001). Based on the annulus over the cornea, the highest and lowest densitometry values were seen in the 10- to 12-mm (21.31 ± 4.26 GSU) and 2- to 6-mm zones (13.26 ± 2.34 GSU), respectively. However, this difference was not seen after 35 years of age. Individuals aged 30 to 35 years showed higher corneal densitometry values compared with subjects aged 20 to 25 years old (P < 0.001). In generalized linear models, the corneal thickness was associated with the densitometry value in the central and posterior corneal layers. There were no significant differences in sex and refractive errors among participants.
conclusionsThis study provided normal corneal densitometry data in PRK candidates. Corneal densitometry increased with age until 35 years of age and then decreased thereafter. This finding should be considered in patient selection for PRK and their postoperative examinations.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.