This post was most recently updated on September 14th, 2022
Low vision refers to visual impairment but still have some vision. It is a term used to describe people who have sight but aren’t able to read newspapers at a standard distance of reading, even with the use of contact lenses or glasses. People who have low vision typically require modifications in lighting and/or larger print in order to read what they see. There are two types of low-vision:
● MyopicIncapable of seeing distant objects clearly, often known as “near-sighted.”
● Hyperopic- Incapable of seeing objects in close proximity, often called “far-sighted.”
Partially Sighted is commonly used in the context of education to refer to visually impaired students who require special education services. The student who is partially blind faces the obstacles of disability in the same manner as a completely blind student. Accommodations can include readers, audiotaped text as well as drawings with raised lines. A partially-sighted student might be able to utilize large print books as well as Closed-Circuit Television (CCTV) and other magnifying equipment. Some students who are partially sighted may take notes during class by printing extremely large using an e-ink marker or felt tip pen or tape recording lessons for later use.
Legally Blind refers specifically to people with more than 20/200 sight in their better eye or a small field of vision that is less than 20 degrees at its broadest point. Legally blind people may have some vision that is useful.
Absolutely Blind individuals require Braille, raised-line drawings audio recordings, or other non-visual mediums to aid in accessing the contents of visually displayed media.
What’s the difference between low Vision and blindness?
Low vision does not mean blindness. It’s just that some that you are affected but you are able to have a great degree of independence with low-vision devices and tools.
What is Low Vision?
Many people mix up the terms ‘visual impairment, ”low vision” or “blindness”. In this article, we’ll unravel that confusion and give an understanding to every one of them:
Visual impairment is an umbrella term that describes any vision loss. These are some examples of terms that are used to define various types that are vision impaired:
● Low vision refers to fully corrected vision that’s not sufficient or hinders your ability to accomplish what you wish to accomplish. It is not connected to visual clarity, the field of view, or any other aspects of vision such as dark adaption or sensitivities.
● Legally blind is defined as vision of at or below 20/20 in the superior eye, which is not corrected using contact lenses or glasses or a visual field that is less than 20 degrees. Certain eye conditions, such as cataracts, glaucoma, macular degeneration, and diabetic retinopathy could cause someone to become legally blind.
● Total blindness is the total absence of sight and form which is often the result of an illness, genetic disorder, or injury.
● Partial vision is the ability to only see a small portion of your visual field or to have an excellent central vision, but weak peripheral sight. Brain tumors or brain damage or eye problem are the most frequent causes.
Does low vision mean blindness?
No. Vision loss that isn’t corrected by contacts, glasses, or Cataract surgery is known by the term “low vision. Since the vision is not completely gone the same, it’s not considered blindness. People with poor vision might be unable to see clearly, have blurred vision, and even have poor night vision.
Common Types of Low-Vision
The loss of central vision
A blurred or blind spot that is in the center of what you’re seeing is caused by a loss of central vision. This can make it impossible to comprehend, and distinguish faces and people at the distance. The individual’s right side (peripheral) view is usually not affected by the loss of central vision.
So long as the person has a good view of the sides, movement is feasible.
Vision loss in the peripheral (side) vision
Peripheral vision loss leaves people with central vision remaining which allows them to look directly ahead and read and watch TV, and even recognize faces. This is known as tunnel vision. It could result from glaucoma brain tumors or trauma.
Peripheral vision loss can make it difficult to distinguish objects on both sides, in addition to objects that are directly above or below eye level. Mobility is usually hindered by an impairment in peripheral vision.
Blurred vision can cause near and far vision to appear blurred. If blurred vision is due to refractive errors, lenses, lenses, and occasionally surgery may help to clear it. Certain conditions can result in blurred or dizzy vision which can’t be fixed, for instance, cataracts, macular degeneration, and diabetic edema.
Sensitivity to contrast is reduced
People with low contrast sensitivity have trouble distinguishing an object from others with the same color or shade. For instance, a person wearing a gray dress might be difficult to discern when it is cloudy. In the same way, the search for a blue wallet inside an uncolored purse could be a challenge for those who have a lower sensitivity to contrast. Some may have difficulty driving even when their “acuity” is excellent since visual acuity is determined by high-contrast charts. The most frequent eye conditions that result in loss of contrast sensitivity include cataracts and macular degeneration.
Light sensitivity and glare
There are two kinds of glares: discomfort glare as well as disability glare.
Patients who are uncomfortable with glare may feel uncomfortable when they are in the presence of light sources such as incandescent bulbs or fluorescent light sources, as well as Halogen lamps, such as the ones used in headlights for cars. Glare can originate from various sources, including reflections from fresh snow, water, and white sand. They can be use tinted eyeglasses for light sensitivity.
People with disability glare are unable to operate in these conditions which could result in being put in danger.
Both kinds of glares can be addressed by a Low Vision Center At Optical Images Low Vision Eye Doctor.
Night blind people have difficulty seeing outdoors at night, or when indoors in dimly-lit environments.
How low-vision devices can Aid?
People who have low vision generally live and work independently because of a variety of equipment and devices that greatly enhance their lives.
Low vision specialist prescribes all kinds of low vision glasses and other devices, for example:
● bioptic as well as complete diameter telescope lenses
● magnifying glasses
● prism glasses
● and filters of every kind
● along with a vast assortment of low vision aids, from magnifiers that can be held by hand as well as electronic aids to visual.
Large-type magazines, books, and newspapers, in addition to tape books, talk wristwatches, self-threading needles, and many other items, can aid those with low vision.