منابع مشابه
Update on Spectacle Lens
Majority of the advances in spectacle lens continue to occur in the area of progressive lens design by most of the spectacle lens manufacturers. Since the introduction of progressive addition lenses (PALs) in 1959 by Essilor, it has gained worldwide acceptance for the treatment of presbyopia. While progressive lens design, manufacturing and dispensing techniques have grown at a good pace in the...
متن کاملIn-the-Spectacle-Lens Telescopic Device for Low Vision
Spectacle-mounted telescopic systems are prescribed for individuals with visual impairments. Bioptic telescopes are typically mounted toward the top of the spectacle lens (or above the frame) with the telescope eyepiece positioned above the wearer’s pupil. This allows the wearer to use up and down head tilt movements to quickly alternate between the unmagnified wide view (through the carrier le...
متن کاملSpectacle lens compensation in the pigmented guinea pig
When a young growing eye wears a negative or positive spectacle lens, the eye compensates for the imposed defocus by accelerating or slowing its elongation rate so that the eye becomes emmetropic with the lens in place. Such spectacle lens compensation has been shown in chicks, tree-shrews, marmosets and rhesus monkeys. We have developed a model of emmetropisation using the guinea pig in order ...
متن کاملPatients' satisfaction and spectacle independence after cataract surgery with multifocal intraocular lens implantation in a tertiary care hospital.
This single group cohort study, undertaken at Aga Khan University Hospital, Karachi, from Jan 2012 to September 2013, assessed patients' satisfaction, spectacle independence and visual disturbance after implantation of multifocal IOLs. A total of 39 patients who underwent bilateral cataract surgery with multifocal IOL implantation were included for telephonic interviews. The mean age of partici...
متن کاملSpectacle independence and subjective satisfaction of ReSTOR® multifocal intraocular lens after cataract or presbyopia surgery in two European countries
PURPOSE To determine the percentage of patients implanted bilaterally with ReSTOR((R)) requiring spectacles at 18 months, the patient satisfaction, and factors that predict spectacles independence. METHODS The medical and surgical data were collected from patient records. The 'Freedom from Spectacles Value Scale' (FGVS) was used to rank their experiences via telephone interview. A Bayesian ne...
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ژورنال
عنوان ژورنال: Journal of the Franklin Institute
سال: 1917
ISSN: 0016-0032
DOI: 10.1016/s0016-0032(17)90085-7