Normal Values of Corneal Optical Densitometry Using Pentacam Scheimpflug Camera
نویسندگان
چکیده
منابع مشابه
Normal Values of Corneal Optical Densitometry Using Pentacam Scheimpflug Camera
Cornea is unique to its transparency. It has Peculiar feature of transmitting almost all the light passing through it. Corneal clarity dwindles with surgical or pathological insults i.e. infections, corneal dystrophies and degenerations [1]. This induced corneal haze impedes the light rays to pass which results in backward scattering of light [2]. Maintaining regular surveillance over resulting...
متن کاملlens densitometry changes after corneal collagen cross-linking in patients with keratoconus using pentacam scheimpflug camera
purpose: to evaluate densitometry of crystalline lens after cxl procedure in keratoconic patients. methods: in a quasi-experimental study three-dimensional lens densitometry was performed by pentacam scheimpflug camera at base line and 6 months later. subject group contained patients with diagnosed progressive keratoconus who underwent cxl surgery (n = 40). control group contained aged-matched ...
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PURPOSE To evaluate changes in crystalline lens densitometry following corneal cross-linking (CXL) in keratoconic patients. METHODS In a quasi-experimental study, three-dimensional lens densitometry was performed using the Pentacam Scheimpflug camera (Oculus Optikgerate GmbH, Wetzlar, Germany) at baseline and six months after CXL. Densitometry was performed in a fixed area of 2 inch × 1 inch ...
متن کاملComparison of central corneal thickness measurements using optical low-coherence reflectometry, Fourier domain optical coherence tomography, and Scheimpflug camera.
PURPOSE To compare the results of central corneal thickness (CCT) measurements obtained using optical low-coherence reflectometry (OLCR), Fourier domain optical coherence tomography (FD-OCT), and a Scheimpflug camera (SC), combined with Placido corneal topography. METHODS A total of 25 healthy subjects were enrolled in the present study, and one eye of each subject was included. A detailed op...
متن کاملVideo camera calibration for optical densitometry.
An efficient technique for calibrating video cameras to record optical density (OD) from microscopic images is described. The method corrects for variation over the field of the brightfield and darkfield intensities, does not assume a linear response of the camera to the incident intensity and requires a single calibration filter.
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ژورنال
عنوان ژورنال: Advances in Ophthalmology & Visual System
سال: 2016
ISSN: 2377-4290
DOI: 10.15406/aovs.2016.05.00142