نتایج جستجو برای: eyes distance
تعداد نتایج: 287551 فیلتر نتایج به سال:
PURPOSE To compare differences in visual acuity, contrast sensitivity, complications, and higher-order ocular aberrations (HOAs) in eyes with stable myopia undergoing either photo-refractive keratectomy (PRK) or thin-flap laser in situ keratomileusis (LASIK) (intended flap thickness of 90 μm) using the VISX Star S4 CustomVue excimer laser and the IntraLase FS60 femtosecond laser at 1, 3, and 6 ...
The genus Architis Simon, 1898 currently includes 21 described species distributed in the Neotropical region, from Panama to Argentina (Platnick 2012). Santos (2007b) provided the latest revision, describing eight new species and synonymizing A. nitidopilosa Simon, 1898 with A. tenuis Simon, 1898 (the type species of the genus), A. suarez Carico, 1989 with A. cymatilis Carico, 1981 and A. pauli...
The vestibulo-ocular reflex (VOR) generates compensatory eye movements in response to angular and linear acceleration sensed by semicircular canals and otoliths respectively. Gaze stabilization demands that responses to linear acceleration be adjusted for viewing distance. This study in humans determined the transient dynamics of VOR initiation during angular and linear acceleration, modificati...
PURPOSE We evaluated changes in anterior chamber (AC) morphology and iris volume induced by physiological mydriasis in fellow eyes of acute angle-closure patients, and age-, sex-, and central AC depth-matched primary angle-closure suspects (PACS). METHODS In our study, 21 fellow eyes of patients with acute angle closure; 40 age-, sex-, and central AC depth-matched PACS eyes; and 40 age- and s...
A kind of multi-attribute grey-target decision model based on positive-negative target center is put forward aimed at the complexity and uncertainty of the actual decision environment. Firstly, the optimal effect vector and the worst effect vector of the grey-target decision are respectively defined as the positive and negative clouts; secondly, the spatial projection distance between the posit...
Anapidae are small-sized (~ 3 mm), three-clawed, haplogyne spiders with six or eight eyes situated on an elevated ocular region and an anterior labral spur. The family currently contains 38 genera and 153 species worldwide (Platnick 2013, Lin, Li & Jäger, 2013). Nine species belonging to six genera have been recorded from China (Oi, 1960; Brignoli 1981; Zhang & Chen, 1994; Wunderlich & Song, 19...
The macular dazzling test was performed on 240 healthy eyes, classified into six groups according to the ages of the subjects. The test was used to assess both long distance and short distance vision with a simultaneous study of the influence of mydriasis and miosis. The MDT is a test easy to perform, requires a minimum of co-operation by the subject, and gives repeatable results. The MDT value...
Introduction and purpose: Walking difficulty, visual impairment and distance perception disorders are the most important problems in old age. The purpose of this study was to compare distance perception in active and inactive elderly with an emphasis on physical activity. Materials and Methods: This causal-comparative study was conducted among elderly men in the city of Tabriz. Random sampli...
The eye needs light intensity from the lamp to see objects around it. can because of that hits object and reflects it eye. distance greatly affects condition existence object. Determining hitting will affect brightness eyes, over time eyes become unhealthy. Eye health is very important do job. must be under predetermined standards. Standard use lights makes healthier in addition food nutrition ...
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