نتایج جستجو برای: spectacle
تعداد نتایج: 2250 فیلتر نتایج به سال:
BACKGROUND Spectacle contact allergy is not infrequent. The fine scratches on the spectacle frames which may play a role in the sensitization to the potential allergenic components have not been studied. OBJECTIVE We sought the relationship between the scratches on the spectacle frames and the allergic contact dermatitis (ACD) in the Republic of Korea. METHODS A total of 42 Korean patients ...
The advanced avionic and electro-optical systems installed in Army rotary wing aircraft are becoming increasingly incompatible with spectacle wear. Therefore, the prevalence of spectacle wear among Army aviators is an important consideration in the development of future systems. A review of spectacle prevalence data from the Aviation Epidemiology Data Register (AEDR) for the years 1986, 1987, 1...
Many children with accommodative esotropia are able to successfully discontinue spectacle wear, while others require spectacle correction into adulthood. Parents often ask about the likelihood of glasses being required on a long-term basis and whether use of spectacles will cause dependency. Most infants are hyperopic and gradually become emmetropic. The extent to which accommodation and specta...
BACKGROUND Covering the eye of all snakes is a transparent integumental structure known as the spectacle. In order to determine variations in spectacle thickness among species, the spectacles of 217 alcohol-preserved museum specimens of 44 species belonging to 14 different families underwent optical coherence tomography (OCT) to measure spectacular thickness. Multivariable analyses were made to...
OBJECTIVES To evaluate different refractive cutoffs for spectacle provision with regards to their impact on visual improvement and spectacle compliance. DESIGN Prospective study of visual improvement and spectacle compliance. PARTICIPANTS South African school children aged 6-19 years receiving free spectacles in a programme supported by Helen Keller International. METHODS Refractive error...
The eyes of snakes are shielded beneath a layer of transparent integument referred to as the 'reptilian spectacle'. Well adapted to vision by virtue of its optical transparency, it nevertheless retains one characteristic of the integument that would otherwise prove detrimental to vision: its vascularity. Given the potential consequence of spectacle blood vessels on visual clarity, one might exp...
Reading is the most common goal among persons with age-related macular degeneration and other retinal diseases that lead to macular loss, as well as the functional task most affected by the resulting central scotomas. This project determined whether reading ability is different when persons with macular loss read with a new hybrid-diffractive spectacle magnifier versus a refractive-aspheric spe...
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