Corneal shape in hyperopia
نویسندگان
چکیده
منابع مشابه
Constant light produces severe corneal flattening and hyperopia in chickens
In this study we report on the effects of constant light (CL) on the refractive development and ocular morphology of White Leghorn chicks (Cornell K-strain). Refractive state and corneal curvature were measured by IR photoretinoscopy and IR keratometry respectively. The axial lengths of the ocular components were measured by A-scan ultrasonography. We find that constant light produces significa...
متن کاملCorneal Thickness Profile Changes After Femtosecond LASIK for Hyperopia
PURPOSE To compare changes in the corneal thickness profile before and 6 months after femtosecond laser in situ keratomileusis (LASIK) for hyperopia. METHODS In a prospective noncomparative case series study, 24 eyes of 20 hyperopic patients undergoing femtosecond LASIK were examined preoperatively and 6 months postoperatively. Corneal profile was measured using Pentacam HR device. Paired t t...
متن کاملTotal and corneal optical aberrations induced by laser in situ keratomileusis for hyperopia.
PURPOSE To evaluate changes induced by standard laser in situ keratomileusis (LASIK) for hyperopia on total and corneal optical quality. METHODS Total and corneal aberrations were measured before and after standard hyperopic LASIK in 13 eyes (preoperative spherical equivalent refractive error +3.17 +/- 1.10 D). The Chiron Technolas 217C laser with PlanoScan was used. Total aberrations (measur...
متن کاملLaser in situ keratomileusis for high hyperopia with corneal vertex centration and asymmetric offset.
PURPOSE To investigate refractive outcomes and induction of corneal higher order aberrations (HOA) in eyes that underwent laser-assisted in situ keratomileusis (LASIK) for high hyperopia correction using an aberration neutral profile with corneal vertex centration and asymmetric offset. METHODS A total of 24 consecutive patients (38 eyes) who underwent LASIK by one surgeon using AMARIS 750S e...
متن کاملCorneal shape and eccentricity in population.
The human cornea is an important tissue involved in the mediation of visual perception. It is important to measure its shape especially in the case of correction of refractive errors. Suitable correction such as contact lenses is chosen based on the measured values of the refractive error. An inappropriately fitted contact lens can significantly affect the physiology of the cornea and the eye. ...
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ژورنال
عنوان ژورنال: Clinical and Experimental Optometry
سال: 1998
ISSN: 0816-4622,1444-0938
DOI: 10.1111/j.1444-0938.1998.tb06731.x