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Low vision devices in india.
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They can also be bought from l v prasad eye institute hyderabad and other centres like balliwala homi mumbai.
Examples include standing and hand held magnifiers strong magnifying reading glasses loupes and small telescopes.
The way the lens bends or refracts light.
Magnitude of low vision optics of low vision devices the functional assessment the examination and evaluation optical devices nonoptical devices other assistive devices selecting the devices for partially sighted types of visual field defects their effects and intervention visual aids and how to use them.
Currently india has around 12 million blind people which makes india home to one third of the world s blind population.
It then notifies the user of these obstacles through vibrations allowing the user to safely navigate around any objects that they may encounter.
The device uses ultrasound to detect obstacles that may lie directly in one s path.
When ordinary eye glasses contact lenses or intraocular lens implants cannot provide sharp sight an individual is said to have low vision.
Low vision services are aimed at people who have residual vision that can be used and enhanced by specific aids.
A low vision resource centre is operating from hong kong special administrative region china to distribute high quality affordable low vision devices and equipment to all regions.
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These devices provide greatly increased magnification capabilities along with higher quality optics i e.
What is low vision.
Out of which 37 million are blind and rest 124 million are people with low vision.
5 ninety percent of the people with visual impairment are living in the developing countries.
Based on the current estimates worldwide there are 161 million people with visual impairment.
Low vision aids are devices designed to help people with poor vision read and see.