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Comparison of Keratometric Values and Corneal Eccentricity

Pavel Beneš ; Faculty of Medicine, Departments of Non-medical Branches, Department of Optometry and Orthoptics, Brno, Czech Republic
Svatopluk Synek ; Faculty of Medicine, Institutions Shared with St. Anne's Faculty Hospital, Department of Ophthalmology and Optometry,
Sylvie Petrová ; Faculty of Medicine, Departments of Non-medical Branches, Department of Optometry and Orthoptics, Brno, Czech Republic

Puni tekst: engleski, pdf (821 KB) str. 31-36 preuzimanja: 1.672* citiraj
APA 6th Edition
Beneš, P., Synek, S. i Petrová, S. (2013). Comparison of Keratometric Values and Corneal Eccentricity. Collegium antropologicum, 37 Supplement 1 (1), 31-36. Preuzeto s https://hrcak.srce.hr/102773
MLA 8th Edition
Beneš, Pavel, et al. "Comparison of Keratometric Values and Corneal Eccentricity." Collegium antropologicum, vol. 37 Supplement 1, br. 1, 2013, str. 31-36. https://hrcak.srce.hr/102773. Citirano 23.02.2020.
Chicago 17th Edition
Beneš, Pavel, Svatopluk Synek i Sylvie Petrová. "Comparison of Keratometric Values and Corneal Eccentricity." Collegium antropologicum 37 Supplement 1, br. 1 (2013): 31-36. https://hrcak.srce.hr/102773
Harvard
Beneš, P., Synek, S., i Petrová, S. (2013). 'Comparison of Keratometric Values and Corneal Eccentricity', Collegium antropologicum, 37 Supplement 1(1), str. 31-36. Preuzeto s: https://hrcak.srce.hr/102773 (Datum pristupa: 23.02.2020.)
Vancouver
Beneš P, Synek S, Petrová S. Comparison of Keratometric Values and Corneal Eccentricity. Collegium antropologicum [Internet]. 2013 [pristupljeno 23.02.2020.];37 Supplement 1(1):31-36. Dostupno na: https://hrcak.srce.hr/102773
IEEE
P. Beneš, S. Synek i S. Petrová, "Comparison of Keratometric Values and Corneal Eccentricity", Collegium antropologicum, vol.37 Supplement 1, br. 1, str. 31-36, 2013. [Online]. Dostupno na: https://hrcak.srce.hr/102773. [Citirano: 23.02.2020.]

Sažetak
The aim of this work is to compare the findings of keratometric values and their differences at various refractive errors. The eccentricity of the cornea in the sense compared to the possible influence of refraction of the eye is topographically observed. Groups of myopia, hyperopia and emmetropia (as a control group) are always represented in total 600 eyes. The studied cohort in total of 300 clients enrolled. Autorefraktokeratometer with Placido disc was used to measure the steepest and the flattest meridian to determine the corneal eccentricity. Group I consisted of 100 myopes, 35 men and 65 women, average age 37.3 years. Objective refraction – sphere: –2.9 D, cylinder: –0.88 D. Keratometry in this group is in
the steepest meridian 7.62 mm and the flattest meridian is 7.76 mm. The eccentricity was 0.37. Group II consisting of 100 hyperopic subjects, 40 men and 60 women, average age 61.6 years. Objective refraction – sphere: +2.71 D, cylinder: –1.0 D. Keratometric measurement looks as follows: the steepest meridian is 7.67 mm, the flattest meridian then is 7.81 mm. The value of the eccentricity is 0.37. The third group III consists of 100 emetropic subjects, then clients without refractive errors who achieve without corrective aids Vmin = 1.0. This group is composed of 42 men and 58 women, mean
age 41.4 years. Objective refraction – sphere: +0.32 D, cylinder: –0.28 D. The steepest meridian is 7.72 mm the flattest meridian then 7.83 mm. The eccentricity is represented by the observed values of 0.36. Keratometry as well as topography are fundamental methods of corneal anterior surface measurement. Their proportions are essential for the proper parameters selection especially in case of contact lenses as one of the possible means intended to correct refractive errors.

Ključne riječi
corneal eccentricity; keratometry; corneal topography; refractive error; anterior surface

Hrčak ID: 102773

URI
https://hrcak.srce.hr/102773

Posjeta: 1.798 *