Results 51 to 60 of about 3,196,627 (365)

The normal distribution of corneal eccentricity and its determinants in two rural areas of north and south of Iran

Journal of Current Ophthalmology, 2018
Purpose: The aim of this study was to determine the distribution of corneal eccentricity (E-value) in a normal population and to examine related factors.
Samira Heydarian, Hassan Hashemi, Fereshteh Shokrollahzadeh, Abbas Ali Yekta, Hadi Ostadimoghaddam, Akbar Derakhshan, Mehdi Khabazkhoob   +6 more
doaj   +1 more source

Refractive errors among commercial drivers

Indian Journal of Ophthalmology, 2022
Purpose: To determine the pattern of refractive error among commercial drivers in north India. Methods: Descriptive study with convenient sampling conducted among commercial drivers of north India. Results: A total of 213 (75.8%) heavy-vehicle and 68 (24.
Mukesh Kumar, Aarti Mahaseth, Shafia Parveen, Uzma Rafeeq, Lokesh Chauhan   +4 more
doaj   +1 more source

A method for three-dimensional particle sizing in two-phase flows [PDF]

, 2004
A method is devised for true three-dimensional (3D) particle sizing in two-phase systems. Based on a ray-optics approximation of the Mie scattering theory for spherical particles, and under given assumptions, the principle is applicable to intensity data
Gharib, Morteza, Pereira, Francisco
core   +1 more source

Refractive Errors and Concomitant Strabismus: A Systematic Review and Meta-analysis

Scientific Reports, 2016
This systematic review and meta-analysis is to evaluate the risk of development of concomitant strabismus due to refractive errors. Eligible studies published from 1946 to April 1, 2016 were identified from MEDLINE and EMBASE that evaluated any kinds of ...
S. Tang, Rachel Y. T. Chan, Shi Bin Lin, S. Rong, H. H. Lau, Winnie W. Y. Lau, W. Yip, L. J. Chen, Simon T. C. Ko, J. Yam   +9 more
semanticscholar   +1 more source

Peripheral refraction and the development of refractive error: a review [PDF]

Ophthalmic and Physiological Optics, 2010
It has been suggested that emmetropic and low-hyperopic eyes in which the refractive error in the periphery of the visual field is relatively hyperopic with respect to the axial refraction may be at greater risk of developing myopia than eyes with similar refractions but relatively myopic peripheral refractive errors.
Neil Charman, W., Radhakrishnan, Hema
openaire   +4 more sources

Five-Year Progression of Refractive Errors and Incidence of Myopia in School-Aged Children in Western China

Journal of Epidemiology, 2016
Background To determine the change in refractive error and the incidence of myopia among school-aged children in the Yongchuan District of Chongqing City, Western China.
Wen-jun Zhou, Yong-ye Zhang, Hua Li, Yu-fei Wu, Ji Xu, Sha Lv, Ge Li, Shichun Liu, Shengfang Song   +8 more
semanticscholar   +1 more source

Repeatability and Agreement of Anterion with Pentacam HR and Orbscan II in Corneal Parameters after Photorefractive Keratectomy

Dubai Medical Journal
Introduction: This study aimed to evaluate the repeatability and agreement of Anterion with Pentacam HR and Orbscan II in corneal parameters after photorefractive keratectomy (PRK).
Hadi Ostadi-Moghaddam, Javad Heravian Shandiz, Mohammad Hosein Validad, Monireh Mahjoob, Abbas Ali Yekta, Sadegh Basharaf, Tahereh Rakhshandadi   +6 more
doaj   +1 more source

Moving in the Dark: Enlightening the Spatial Population Ecology of European Cave Salamanders

Population Ecology, EarlyView.
We assessed individual interactions, movement ecology and activity patterns of a subterranean population of Speleomantes strinatii, applying spatial capture–recapture modeling to a photographic dataset of 104 individuals. ABSTRACT Space use and movement are fundamental aspects of organisms' ecology, mirroring individual fitness, behavior, and life ...
Giacomo Rosa, Andrea Costa, Sebastiano Salvidio   +2 more
wiley   +1 more source

Construction of hyperthermostable d‐allulose 3‐epimerase from Arthrobacter globiformis M30 using the sequence information from Arthrobacter psychrolactophilus

FEBS Open Bio, EarlyView.
d‐Allulose can be produced from d‐fructose by d‐allulose 3‐epimerase. Based on sequence homology information, we successfully engineered thermostable mutants with the protein engineering method. By integrating positive mutations, we constructed an enzyme that exhibits hyperthermostability without a loss in the activity.
Kensaku Shimada, Kouhei Ohtani, Pushpa Kiran Gullapalli, Kazuhiko Ishikawa   +3 more
wiley   +1 more source

Eye problems in children with hearing impairment

Journal of Current Ophthalmology, 2015
Purpose: To compare the prevalence of refractive errors, amblyopia, and strabismus between hearing-impaired and normal children (7–22 years old) in Mashhad.
Hadi Ostadimoghaddam, Hanieh Mirhajian, AbbasAli Yekta, Davood Sobhani Rad, Javad Heravian, Azam Malekifar, Mehdi Khabazkhoob   +6 more
doaj   +1 more source