Low Vision Aids
A notable visual state of being impaired that cannot be fixed entirely with glasses, contact lenses, medication or eye surgery is termed as low vision. It is created by severe eye disease, in which visual acuity in the vigorous eye is 20/70 or smaller. Another situation can be where there is a vital loss of visual field. Constriction to 20 degrees or shorter, termed tunnel vision.
Visual acuity of that a person with 20/70 vision who is 20 feet from an eye chart view what a person with unimpaired or 20/20 vision can view from 70 feet away. Low vision can affect people of all ages, but it is linked essentially with adults up to the age of 60 and above.
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Low Vision Aids: Causes
Causes and common patterns of low vision which cannot be changed comprise:
- Blurred or partially obscured central vision: Macular degeneration (both, age-related, and hereditary)
- Blind spots, blurriness and visual distortions: Diabetic retinopathy
- Poor peripheral vision, or tunnel vision: Glaucoma
- Poor peripheral vision, and inability to see in the dark: Retinitis pigmentosa
- Eye injuries
- The poor central vision which may progress to no light perception: Optic neuropathies which may be inherited or acquired (toxic)
Low Vision Aids
Magnifying Spectacles
Magnifying spectacles are worn like eyeglasses and help you see better for tasks like reading, threading a needle, stitching etc. These are hands-free magnifiers, allowing you to work with your hands.
Stand Magnifiers
These magnifiers are located away from the eye, on the object one is attempting to read. The handheld versions are likewise accessible for reading, and these normally have built-in lights. In case one have a tremor or arthritis, stand magnifiers are greatly suited for the one.
Telescopes
Telescopes may be attached to eyeglasses or be like binoculars, and are used to see objects or signs far away.
Video Magnifiers
These electronic devices make printed pages and pictures seem larger. The reasonably available and easy to use video magnifiers are smartphones and tablets. They allow one to enhance variation and font size of texts.
Low Vision Techniques
There are numerous ways and techniques for low vision. Some of them are :
- Enhance the lighting in the house. Replace light bulbs with bulbs of greater voltage. Make all nooks and crannies are enough interpreted to limit errors and increase visibility.
- Reduce the habit of glaring. Adjust light fixtures to minimise Shield your eyes from dazzle by wearing sunglasses and a wide-brimmed hat or a dupatta/ stole wrapped around your face shielding your eyes.
- Use heavy, bold felt tip markers for writing and shopping lists: Use a whiteboard to mark essential dates and calendars.
- Exclusive low vision devices like watches, remotes, and thermostats that talk back are too readily accessible, and affordable.
Evaluation
Talk with an expert in the Clinic low vision specialty group will involve the following:
- Low vision evaluation: A medical expert will examine the patient to discover how low vision is harming him or her and their family.
- Complete vision exam: One may already have acquired an eye exam from an eye doctor. But while visiting with the Clinic of low vision specialty group, a doctor will provide a long gentle vision exam. This exam serves pinpoint which lenses or low vision devices will help one to obtain the sharpest possible picture.
- Follow-up and referral: One may be referred to an occupational therapist for training in the use of low vision aids, or the medical social worker can refer you to agencies or organizations in your area that help visually impaired people.
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