Low Vision
What Is Low Vision?
Low vision is the loss of sight that is not correctible with prescription eyeglasses, contact lenses or surgery. This type of vision loss does not include complete blindness, because there is still some sight and it can sometimes be improved with the use of visual aids.
Low vision includes different degrees of sight loss, from blind spots, poor night vision and problems with glare to an almost complete loss of sight.
Who Is Most At Risk Of Having Low Vision?
Anyone can be affected by low vision because it results from a variety of conditions and injuries. Because of age-related disorders like macular degeneration and glaucoma, low vision is more common in adults over age 45 and even more common in adults over age 75. For example, one in six adults over age 45 has low vision; one in four adults over age 75 has low vision.
Take Questionnaire For Low Vision.
Symptoms
There may be one or more causes of low vision. These are usually the result of disorders or injuries affecting the eye or a disorder such as diabetes that affects the entire body. Some of the most common causes of low vision include age-related macular degeneration, diabetes and glaucoma. Low vision may also result from cancer of the eye, albinism, brain injury or inherited disorders of the eye including retinitis pigmentosa. If you have these disorders or are at risk for them, you are also at greater risk for low vision.
Service Provided
Assessment Of Difficulty Level Of The Patient In Performing Day To Day Activities
Vision Assessment
Spectacle Power Check Up
Testing With Low Vision Devices (Optical And Non Optical)
Colour Vision Assessment
Contrast Sensitivity Assessment
Field Of Vision Assessment
What's New
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Loss Of Central Vision
- There is a blind spot in the center of one's vision.
Loss Of Peripheral (Side) Vision
- The inability to see anything to either side, above, or below eye level. Central vision, however, remains intact.
Night Blindness
- The inability to see in poorly lit areas such as theaters, as well as outside at night.
Blurred Vision
- Objects both near and far appear out of focus.
Hazy Vision
- The entire field of vision appears to be covered with a film or glare.
- An eye exam by our eye care specialist can diagnose low vision. Make an appointment with Tej Eye Center, if your vision difficulties are preventing you from daily activities like travel, cooking, work and school. The tests that our eye doctor will perform include the use of lighting, magnifiers and special charts to help test visual acuity, depth perception and visual field.
Optical Aid
When conventional lenses do not provide required visual range, aids that have optical properties capable of promoting better visual performance through lenses
Types of optical aids for- Distance, Intermediate distance, and Near are-
- High-plus spectacles (microscopes)
- Hand-held magnifier
- Stand magnifier
- Telescope system for near (telemicroscope)
- Prismatic reading glasses
- Side-vision awareness glasses
- Absorptive lenses
Non - Optical Aid
Non-optical aids are visual aids that do not use magnifying lenses to improve visual function.2 They can improve the other visual aid's function or can even replace optical aids. They enhance visual function by
- Linear magnification
- Lighting control
- Enhanced contrast
- Reduction of glare
- Improving physical comfort (accessories)
Our low-vision eye doctors at Tej Eye Center offers a wide range of low-vision aids and glasses to help you regain your independence and increase your quality of life.
Frequently Asked Questions
- Low vision care, also known as vision rehabilitation, is a service provided by an eyecare or vision rehabilitation professional that helps maximize the remaining vision of an individual who has a vision impairment . Low vision care typically involves an evaluation by a professional to determine the most appropriate low vision aids based upon the individual’s level of vision and their goals. Rehabilitation training and as well as other appropriate techniques are also considered.
- Low vision care can help make the most of the remaining vision that a person has in order to gain back as much independence as possible with the goal to increase their quality of life. With appropriate low vision devices and training in their use, many people with a vision impairment can continue to read, watch television, manage their finances, maintain their homes, shop, travel, and socialize.
- The major eye diseases and conditions for which low vision devices are used are age-related macular degeneration, diabetic retinopathy, glaucoma, cataracts, retinitis pigmentosa, albinism, Stargardt’s disease and retinopathy of prematurity, myopic degeneration, among many others.
- Unfortunately, there is no one device that is ideal for any particular eye disease or condition. The appropriate device(s) will depend on the individual’s level of vision and their goals. This is why an evaluation by a low vision specialist is so valuable to determine the low vision aids that will work best for the individual’s specific needs.
- Low vision devices vary for the same reason a carpenter carries so many different tools– each is good for a different task. Depending on the job, a carpenter may use a hammer, a saw, or a chisel. Likewise, a visually impaired patient may use a magnifier to read a medicine bottle or package label, a telescope to see signs, watch television, and recognize people, and a video magnifier to read a book. Each low vision aid has its own ideal purpose, and many people benefit from using different devices for different activities. Low vision aids can be divided into several categories—optical aids, non-optical aids, electronic aids, and mobility aids.
- Low vision devices are usually designed to make an image larger– the equivalent of being able to read the large print of a newspaper headline but not the small print of the article. Digital versions can provide a range of magnification powers and can also increase contrast. Individuals with tunnel vision may benefit from image minifiers—similar to peephole door viewers that allow the user to see more at one time. Individuals with side-vision loss (hemianopsia) may benefit from specially prescribed prism eyeglasses.
- Some types of low vision products are available directly from manufacturers or their distributors. Other products are available only through eye care or vision rehabilitation professionals (low vision specialists), At Tej Eye Center, we have experts who can determine and prescribe the most appropriate device(s) for the individual and also train the patients. Success with low vision aids is a combination of using the proper device and the training involved in using it effectively.
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