Corneal Aberrations in Keratoconus: A Pentacam Scheimpflug Imaging Study
نویسندگان
چکیده
Objective
 To investigate high-order corneal aberration alterations at different KC stages using a Pentacam Scheimpflug camera (OCULUS, Wetzlar, Germany), and to compare data with healthy eyes
 
 Materials Methods
 This retrospective comparative study investigated clinical of 50 patients (100 eyes) 59 individuals (118 who underwent topography the in our clinic. Demographic characteristics, total aberrations, HOAs, coma spherical aberrations all participants were extracted recorded.
 Results
 Mean age group was 29.7±10.3 years 32.1±12.4 control group. These two groups compatible terms sex (P=0.11; P=0.76, respectively,). In keratometric classification, mild 63, moderate 23, severe 14 eyes. Differences low-order astigmatism, trefoil, coma, tetra-foil, aberration, root mean square values between eyes statistically significant (P
منابع مشابه
lens 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 ...
متن کاملEvaluation of Intereye Corneal Asymmetry in Patients with Keratoconus. A Scheimpflug Imaging Study
PURPOSE To assess the correlation between keratoconus severity and intereye asymmetry of pachymetric data and posterior elevation values and to evaluate their combined accuracy in discriminating normal corneas from those with keratoconus. METHODS This study included 97 patients: 65 subjects with bilateral normal corneas (NC) and 32 with keratoconus (KC). Central corneal thickness (CCT), thinn...
متن کاملNormal 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 کاملScheimpflug imaging for keratoconus and ectatic disease
Scheimpflug cross-sectioning anterior segment imaging offers significant advantages over traditional placido based curvature analysis and ultrasound pachymetry. The accurate measurement of both the anterior and posterior corneal surfaces and the anterior and posterior lens allows for the creation of a three-dimensional reconstruction of the anterior segment. Changes on both the posterior cornea...
متن کاملCorneal thickness measurements with Scheimpflug and slit scanning imaging techniques in keratoconus
PURPOSE To determine the repeatability of corneal thickness measurements with Scheimpflug (Pentacam) and slit scanning (Orbscan) imaging techniques in different grades of keratoconus. METHODS This study was conducted as a cross-sectional research. Imaging with Orbscan and Pentacam was performed on patients with different grades of keratoconus. With each device, 3 measurements were taken at 10...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of contemporary medicine
سال: 2021
ISSN: ['2146-6009', '2146-4189']
DOI: https://doi.org/10.16899/jcm.846006