Results 31 to 40 of about 197,605 (292)
Peripheral refractive changes associated with myopia progression [PDF]
, 2013 Purpose.: To evaluate the changes in peripheral refraction profiles associated with myopia progression and treatment modalities used in the Cambridge Anti-Myopia Study.
Allen, Peter M. +7 more
core +1 more source
Stereoacuity Among Patients with Refractive Error at University of Gondar, Northwest Ethiopia
Clinical Optometry, 2021 Mikias Mered Tilahun, Mohammed Seid Hussen, Getasew Alemu Mersha, Biruk Lelisa Eticha Department of Optometry, School of Medicine, University of Gondar, Comprehensive Specialized Hospital, Gondar, EthiopiaCorrespondence: Getasew Alemu Mersha POB: 196 Tel
Tilahun MM +3 more
doaj
IEEE Access, 2022 Subjective accommodation refractive error models are essential for implementing adaptive vision correction devices that utilize varifocal optics. This article describes compact empirical models of subjective accommodative refractive errors in subjects ...
Mohit U. Karkhanis +7 more
doaj +1 more source
Method for Assessing the Fidelity of Optical Diffraction Tomography Reconstruction Methods
, 2019 We use a spatial light modulator in a diffraction tomographic system to assess the accuracy of different refractive index reconstruction algorithms. Optical phase conjugation principles through complex media, allows us to quantify the error for different
Ayoub, Ahmed B. +4 more
core +1 more source
Calculating the error in refractive error [PDF]
Eye, 2011 To demonstrate a quick way of calculating the optical difference between two refractions using vector analysis, and to express this as a score for examination purposes.An existing formula is applied, converted to a defocus equivalent, and then converted to a score.
R H, Taylor +3 more
openaire +2 more sources
, 2013 A cross-sectional study was undertaken in Nakuru, Kenya to assess the prevalence of refractive error and the spectacle coverage in a population aged ≥50 years.
Bastawrous, Andrew +3 more
core +1 more source
What is the global burden of visual impairment? [PDF]
, 2006 Background A recent estimate by the World Health Organization (WHO) suggests that 161 million persons worldwide have visual impairment, including 37 million blind (best-corrected visual acuity less than 3/60 in the better eye) and 124 million with visual
Lalit Dandona, Rakhi Dandona
core +2 more sources
FEBS Open Bio, EarlyView.Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley +1 more source
Oftalʹmologiâ, 2017 The review presents an analysis of the literature data on the methods of surgical correction of residual refractive error after cataract phacoemulsification. Keratorefractive and intraocular approaches are considered in details.
K. B. Pershin +4 more
doaj +1 more source
Refractive errors among children, adolescents and adults attending eye clinics in Mexico [PDF]
International Journal of Ophthalmology, 2017 AIM: To assess the proportion of refractive errors in the Mexican population that visited primary care optometry clinics in fourteen states of Mexico. METHODS: Refractive data from 676 856 patients aged 6 to 90y were collected from optometry clinics in ...
Francisco Gomez-Salazar +16 more
doaj +1 more source