Results 101 to 110 of about 385,906 (239)
Synchronous phase-demodulation of high spatial frequency, concentric-rings, Placido fringe patterns [PDF]
arXiv, 2012 Here a synchronous phase-demodulation method for high spatial frequency (HSF), concentric-rings Placido fringe pattern is proposed. The earliest use of this concentric-rings pattern was to gauge non-spherical irregularities of the human cornea by Portuguese ophthalmologist Antonio Placido in 1880.
arxiv
In vivo imaging of human cornea with high-speed and high-resolution Fourier-domain full-field optical coherence tomography [PDF]
arXiv, 2020 Corneal evaluation in ophthalmology necessitates cellular-resolution and fast imaging techniques allowing accurate diagnoses. Currently, the fastest volumetric imaging technique is Fourier-domain full-field optical coherence tomography (FD-FF-OCT) that uses a fast camera and a rapidly tunable laser source.
arxiv
Journal of Ophthalmology, 2014 Purpose. We report the effect of isotretinoin on corneal topography, corneal thickness, and biomechanical parameters in patients with acne vulgaris. Method. Fifty-four eyes of 54 patients who received oral isotretinoin for treatment of acne vulgaris were
Y. Yıldırım +7 more
semanticscholar +1 more source
Use HMM and KNN for classifying corneal data [PDF]
arXiv, 2014 These days to gain classification system with high accuracy that can classify complicated pattern are so useful in medicine and industry. In this article a process for getting the best classifier for Lasik data is suggested. However at first it's been tried to find the best line and curve by this classifier in order to gain classifier fitting, and in ...
arxiv
Indian Journal of Ophthalmology, 2017 A 29-year-old male was referred following a flap loss after the creation of a thin, irregular flap with a visual acuity of logMAR 0.1 with −2.0 DS−2.75 DC × 175°.
Rohit Shetty +4 more
doaj +1 more source
Two-dimensional relative peripheral refractive error induced by Fractal Contact Lenses for myopia control [PDF]
arXiv, 2016 Purpose: To assess the peripheral refraction induced by Fractal Contact Lenses (FCLs) in myopic eyes by means of a two-dimensional Relative Peripheral Refractive Error (RPRE) map. Methods: FCLs prototypes were specially manufactured and characterized. This study involved twenty-six myopic subjects ranging from -0.50 D to -7.00 D.
arxiv
Deep Sequential Feature Learning in Clinical Image Classification of Infectious Keratitis [PDF]
arXiv, 2020 Infectious keratitis is the most common entities of corneal diseases, in which pathogen grows in the cornea leading to inflammation and destruction of the corneal tissues. Infectious keratitis is a medical emergency, for which a rapid and accurate diagnosis is needed for speedy initiation of prompt and precise treatment to halt the disease progress and
arxiv
Periodontology 2000, EarlyView.Abstract Orthodontic therapy applies forces to teeth, causing an inflammatory reaction in the periodontal ligament. This is repaired by remodeling of the periodontium, allowing tooth displacement. Although orthodontic therapy is mostly initiated during childhood and adolescence, the number of adults seeking this treatment is increasing as our society's
Ludovica Parisi +4 more
wiley +1 more source
OpenEDS: Open Eye Dataset [PDF]
arXiv, 2019 We present a large scale data set, OpenEDS: Open Eye Dataset, of eye-images captured using a virtual-reality (VR) head mounted display mounted with two synchronized eyefacing cameras at a frame rate of 200 Hz under controlled illumination. This dataset is compiled from video capture of the eye-region collected from 152 individual participants and is ...
arxiv