Results 281 to 290 of about 1,605,305 (323)
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Corneal thickness in congenital glaucoma
American Journal of Ophthalmology, 2004To compare central corneal thickness between eyes with congenital glaucoma and normal controls and to correlate this parameter with corneal diameter and axial length.Eyes of consecutive children with congenital glaucoma with previous glaucoma surgery and eyes of children with inadequacy of lacrimal drainage system with age less than 3 years old were ...
Marta Junqueira, Henriques +5 more
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Ultrasound biomicroscopic corneal thickness measurement for corneal thickness mapping
Japanese Journal of Ophthalmology, 1997Digitalized ultrasound biomicroscopic measurements of vertical cross sections from a 5 mm diameter area of the central cornea of normal and morbid eyes were used to create a computerized corneal thickness map. Mean corneal thickness in normal eyes was 0.503 +/- 0.027 mm; the coefficient of variation, an index of reproducibility, was < 10% in all eyes.
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Maternal Corneal Thickness During Pregnancy
American Journal of Ophthalmology, 1988We measured central corneal thickness in 89 pregnant women. It was increased 16 micron (P = .01) compared to the control eyes of 18 nongravid and 17 postpartum women. There was no significant difference (P = .79) in corneal thickness between the nongravid and postpartum groups.
R N, Weinreb, A, Lu, C, Beeson
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CENTRAL THICKNESS IN CORNEAL DISORDERS
Acta Ophthalmologica, 1978In the single individual the central corneal thickness (CCT) shows only small variations. Therefore CCT has been studied in a number of corneal diseases in order to investigate if this dimension might contribute to the diagnosis or to the understanding of the pathogenesis.Normal CCT was found in hereditary dystrophies with the exception of the macular ...
N, Ehlers, T, Bramsen
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Corneal Thickness at High Altitude
Cornea, 2007The eye, like other organs, is affected by the hypobaric hypoxia of high altitude. Corneal swelling is known to occur under hypoxic conditions at sea level, for instance when wearing contact lenses. The aim of this study was to measure central corneal thickness (CCT) in lowlanders ascending to altitude.The Apex 2 medical research expedition provided ...
Daniel S, Morris +5 more
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Corneal thickness and axial length
American Journal of Ophthalmology, 2005A thin central cornea has been reported to be a risk factor for developing primary open-angle glaucoma among ocular hypertensive eyes. A thin scleral bed of lamina cribrosa seen in deeply excavated optic nerves in glaucomatous eyes is a quintessential finding in advanced glaucomatous eyes. Association between thin cornea and weak sclera contributing to
Mitsugu, Shimmyo, Paul N, Orloff
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BIOMETRIC CORRELATIONS OF CORNEAL THICKNESS
Acta Ophthalmologica, 1975Central corneal thickness, depth of anterior chamber, thickness of lens, length of vitreous, axial length, applanation (Goldmann) and indentation (Schiøtz) tension and rigidity (Friedenwald) were determined in three groups of patients; (1) 16 patients with glaucoma simplex, (2) 25 patients with ocular hypertension, and (3) 26 patients with ...
N, Ehlers, F K, Hansen, H, Aasved
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Diurnal variation in corneal thickness
Experimental Eye Research, 1973Abstract Corneal thickness was measured at three different times of day in rabbits. The rabbit cornea showed a significant diurnal variation regarding thickness. In most cases, the cornea was thickest in the forenoon, and then thinning followed. It usually became thinnest in the afternoon, but sometimes at about noon.
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Corneal thickness measured by interferometry
Journal of the Optical Society of America, 1975An optical method for measuring the thickness of transparent structures has been developed, and has been used to measure, in vivo, the thickness of the human cornea. The thickness is measured by placing the anterior surface of the cornea at the focus of a beam of coherent laser light and then measuring the spacing between the interference fringes ...
D G, Green, B R, Frueh, J M, Shapiro
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Effect of Corneal Drying on Central Corneal Thickness
Journal of Glaucoma, 2004To determine the amount of corneal thinning induced by corneal drying, and to discuss its possible consequences on applanation pressure.Two sets of central corneal thickness measurement from 100 eyes of 100 patients were taken by ultrasonic pachymeter at time settings of 0, 15, 30, 45, and 60 seconds. During the first set (group 1), patients were asked
Volkan, Dayanir +6 more
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