Vision loss is a very serious and very worrying condition for a patient. A person may be losing their vision either gradually or in a very sudden manner. Sometimes, the loss of sight is so gradual and minimal, that even the patient does not recognize it. Such loss can be recognized through screening machines present in ophthalmologist clinics.

A common misconception is that people usually consider complete blindness as the only form of blindness. Partial sight loss however, if below 20/200 is considered to be legally blind in the US even if the patient has retained some eyesight.

The reason behind sight loss usually varies from patient to patient but can more easily be identified by going through the history of the patient. A person suffering from partial blindness usually has trouble with depth perception especially when it comes to climbing steps. Reading print in newspapers and articles is difficult for them. Identification of money denominations, crossing roads, facial recognition and other small routine tasks prove to be obstacles for those suffering from partial blindness.

There are various forms of blindness that a patient may suffer from. The difference lies between the angle which is visible such as central blindness or side-blindness. Another major factor is that of blurriness or distortion.

Macular Degeneration

Macular degeneration refers to the loss of vision at the center of the eye. This poses trouble when it comes to tasks such as reading or writing. Color recognition and daylight vision may also be affected. Since the sufferer still retains side vision, the sufferer is able to move about and function in society.


Glaucoma is the opposite of macular degeneration. The sufferer loses side vision while retaining the central vision of the eye. Depth perception and understanding contrast becomes difficult for the sufferer. Moving around becomes a difficult task since the brain is unable to calculate distances whilst being unable to see moving or stationary objects towards the side. Up close work is not as difficult but still poses issues.

Detached Retina

This refers to vision loss where the retina has been damages. More commonly found among middle-ages and short-sighted individuals, retina detachment appears like a shadow over the eye. The sufferer may also experience flashes of light or moving shades called floaters. The floaters and the light flashes however are nor painful or harmful. A person experiencing these symptoms should visit an eye-specialist if the reduction in vision has substantially sped up or floaters have become frequent. Retina detachment is a curable disease if taken care of in time.


Unlike the above mentioned vision impairments, cataracts results in blurred rather than distorted vision. Cataracts occurs when a person’s lens becomes clouded. This causes blockage in the path of the light that enters the eye. Misty or blurred vision as a result of the obstruction is common. Often if the cloud formed over the lens is misshaped it causes a splitting of light that enters the eye forming two images on the retina resulting in double vision. If untreated for a prolonged period of time, the cloud turns yellow acting similar to camera lens filter that gives the vision of the sufferer a yellow tinge. Very bright lights may have a dazzling effect on the person. Cataracts can be cured easily and is one of the less threatening forms of blindness.

Vision loss is a very serious disease. Most often people suffering from sight loss do not realize the problem and postpone treatments. This proves adverse to their vision. Sight loss must be treated immediately and effectively as it can result in extreme problems in functioning in society.

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