Results 71 to 80 of about 2,915 (196)
Shape of stars and optical quality of the human eye [PDF]
, 1997 Contiene: fórmulas y 7 ilustraciones.Star images are entoptic phenomena that most people can perceive when looking at bright point sources in darkness. Diffraction and/or ocular aberrations seem to be a plausible cause for the star patterns, but to our ...
Brandenburg, Vincent Matthias +3 more
core +1 more source
Clinical Ophthalmology, 2011 David L DeMill, Maylon Hsu, Majid MoshirfarJohn A Moran Eye Center, University of Utah, Salt Lake City, UT, USABackground: The purpose of this study was to evaluate the American Society of Cataract and Refractive Surgery (ASCRS) intraocular lens (IOL ...
DeMill DL, Hsu M, Moshirfar M
doaj
Examination of blades used in LASIK by scanning electron microscopy [PDF]
, 2006 PURPOSE: To evaluate and compare, by scanning electron microscopy (SEM), the sharpness of the edge of brand new surgical blades and consecutively used surgical blades in laser-assisted in situ keratomileusis (LASIK).
Campos, Mauro Silveira de Queiroz +4 more
core +3 more sources
A pinhole implant to correct postoperative residual refractive error in an RK cataract patient
American Journal of Ophthalmology Case Reports, 2020 Purpose: To report the clinical outcomes after implantation of a pinhole supplementary implant (Xtrafocus, Morcher GmbH, Stuttgart, Germany) to correct fluctuating residual refraction after cataract surgery in a patient with a history of radial ...
Hyeck-Soo Son +5 more
doaj +1 more source
The Biomechanics of Keratorefractive Surgery [PDF]
, 2008 Corneal biomechanics is the study of the mechanical properties and responses of the cornea. The cornea’s remarkable transparency and strength allow it to contain the intraocular pressure, serve as a protective layer and act as the major refracting ...
Hull, C., Know-Cartwright, N.E.
core
Analysis of new technique for Ferrara ring implantation in keratoconus [PDF]
, 2004 PURPOSE: To describe a new surgical technique for Ferrara ring implantation and to evaluate its safety and efficacy in keratoconus patients. METHODS: A new technique was developed for implanting the Ferrara ring through a single corneal incision.
Godoy, Glaucio De +3 more
core +3 more sources
Bullous keratopathy: etiopathogenesis and treatment [PDF]
, 2008 Bullous keratopathy is characterized by corneal stromal edema with epithelial or subepithelial bullae due to cell loss and endothelial decompensation.
Campos, Mauro Silveira de Queiroz +4 more
core +2 more sources
Revista Cubana de Oftalmología, 1999 Damos a conocer los primeros resultados de la implementación de un nuevo procedimiento quirúrgico para la corrección de la miopía, la mini-queratotomía radial, y su evaluación frente a la queratotomía radial convencional en 25 pacientes en quienes se ...
José Pacheco Serrano +3 more
doaj
Effect of sport-tinted contact lenses for contrast enhancement on retinal straylight measurements [PDF]
, 2008 PURPOSE: To investigate the effect of two tinted contact lenses (CL) designed for outdoor sports activity on the psychometric determination of retinal straylight using the compensation comparison method.
Bohren C. +8 more
core +1 more source
Clinical examples of correct orientation of a toric intraocular lens in patients with postkeratotomic corneal ectasia [PDF]
Клиническая практикаBACKGROUND: Surgical treatment of cataract in patients with postkeratotomic corneal ectasia has various features. First, difficulties arise when calculating the optical strength of an intraocular lens and its cylindrical component and determining the ...
Igor V. Kuznetsov, Natalia V. Pasikova
doaj +1 more source