Distribution of the anterior, posterior, and total corneal astigmatism in healthy eyes
| Autor: | Vahid Ownagh, Fatemeh Sadeghpour, Sepehr Feizi, Mohammad Naderan |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Posterior Eye Segment Adult Male medicine.medical_specialty Visual acuity medicine.medical_treatment Population Scheimpflug principle Visual Acuity Astigmatism 03 medical and health sciences Young Adult 0302 clinical medicine Age Distribution Anterior Eye Segment Refractive surgery Ophthalmology medicine Humans Prospective Studies education Dioptre Aged education.field_of_study medicine.diagnostic_test business.industry Corneal Topography Middle Aged Corneal topography medicine.disease Refractive Errors eye diseases 030104 developmental biology Cross-Sectional Studies 030221 ophthalmology & optometry Female medicine.symptom business |
| Zdroj: | International ophthalmology. 38(2) |
| ISSN: | 1573-2630 |
| Popis: | To evaluate the magnitude and axis orientation of the anterior, posterior, and total corneal astigmatism in normal healthy eyes of an Iranian population. In a prospective cross-sectional study, ophthalmic and anterior segment parameters of 153 healthy eyes of 153 subjects were evaluated by Galilei dual Scheimpflug analyzer. The magnitude and axis orientation [with-the-rule (WTR), against-the-rule (ATR), and oblique] of the anterior, posterior, and total corneal astigmatism measurements (ACA, PCA, and TCA) were compared according to the age, sex, and other ophthalmic parameters. The mean ± SD age of the study population was 30 ± 5.9 years. The mean magnitude was 1.09 ± 0.76 diopters (D) for ACA, 0.30 ± 0.13 D for PCA, and 1.08 ± 0.77 D for TCA. Males had a significantly higher magnitude of PCA than females (p = 0.041). Most eyes had a WTR anterior astigmatism and an ATR posterior astigmatism. The WTR astigmatism had a higher mean magnitude compared to the ATR and oblique astigmatism in all the astigmatism groups, with a significant difference in the ACA and TCA groups (p |
| Databáze: | OpenAIRE |
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