Sightlessness  is the state of being blind or lacking sight. Sightlessness can take place out of the blue or grow slowly over the time. Sightlessness may be absolute or partial, involving only one eye or even certain parts of the visual field.

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“The eyes are the windows to the soul” is a phrase that is frequently used to outline the deep connection someone experiences when gazing into another’s eyes. However, like windows, the eyes work both ways. They are not only important in seeing into another person’s soul, but they are also vital in how we view the world around us. Sight and vision are important because they allow us to connect with our surroundings, keep us safe, and help maintain the sharpness of our minds.Sight is physical – it is a sensory experience in which light reflects off of shapes and objects and the eyes then focus this light. Signals are sent to the brain to be converted into images.
Sightlessness  is the state of being blind or lacking sight.


Sightlessness can take place out of the blue or grow slowly over the time. Sightlessness may be absolute or partial, involving only one eye or even certain parts of the visual field. Sightlessness can also be considered as loss of sight that cannot be corrected to a normal level with eyeglasses. The causes of sightlessness are extremely varied and range from conditions affecting the eyes to conditions affecting the visual processing centers in the brain. Impaired vision becomes more common with age. Common causes of sightlessness in the elderly include diabetic retinopathy, glaucoma, age-related macular degeneration, and cataracts.

Other main causes:

  • Bacterial Infection
  • CMV Retinitis
  • Corneal Scars
  • Eye Tumor
  • Ischemic Optic Neuropathy
  • Medications
  • Onchocerciasis
  • Stargardt’s Disease
  • Toxins/Poisoning
  • Trauma
  • Viral Infections of the Eye
  • Vitamin A Deficiency


All people who are sightless or have visual impairment have the common symptom of difficulty seeing. People with similar levels of sightlessness may have very different responses to that symptom. If one is born blind, there is much less adjustment to a non-seeing world than there is for people who lose their vision late in life, where there may be limited ability to cope with that visual loss. Support systems available to individuals and their psychological makeup will also modify the symptom of lack of sight. People who lose their vision suddenly, rather than over a period of years, also can have more difficulty adjusting to their sightlessness .Associated symptoms, such a discomfort in the eyes, awareness of the eyes, foreign body sensation, and pain in the eyes or discharge from the eyes may be present or absent, depending on the underlying cause of the blindness.A blind person may have no visible signs of any abnormalities when sitting in a chair and resting. However, when sightlessness is a result of infection of the cornea (the dome in front of the eye), the normally transparent cornea may become white or gray, making it difficult to view the colored part of the eye. In sightlessness from cataract, the normally black pupil may appear white. Depending on the degree of blindness, the affected individual will exhibit signs of visual loss when attempting to ambulate. Some blind people have learned to look directly at the person they are speaking with, so it is not obvious they are sightless.


The treatment of visual impairment or sightlessness depends on the cause. In third-world nations where many people have poor vision as a result of a refractive error, merely prescribing and giving glasses will alleviate the problem. Nutritional causes of sightlessness can be addressed by dietary changes. There are millions of people in the world who are blind from cataracts. In these patients, cataract surgery would, in most cases, restore their sight. Inflammatory and infectious causes of sightlessness can be treated with medication in the form of drops or pills. Corneal transplantation may help people whose vision is absent as a result of corneal scarring.


You may not be aware of the changes that occur as you become older , some of which can dramatically affect the way you see or even lead to sightlessness .
The good news is that even small preventive measures, like wearing sunglasses and eating greens, can help protect your eyesight and stave off vision problems later in life.

  • What you eat matters for your eye health. 
    What should your eye-healthy plate look like? Pretty much like any good, healthy meal, starts with a big spinach or kale salad topped with brightly-colored vegetables. Green leafy vegetables provide the nutrients lutein and zeaxanthin, shown to help reduce risk for eye diseases, notes the AAO. And vitamin A found in bright yellow and orange vegetables like carrots and sweet potatoes boosts eye health, according to the National Institutes of Health. Adding fruits like strawberries, oranges, and mangoes provides vitamin C and other antioxidants, which also help fight eye disease. She also includes salmon or other cold-water fish in her ideal meal, since omega 3s are good for tear production, which relieves dry eyes.
  • Comprehensive eye exams pick up vision problems early. Getting a regular eye exam is the only way to catch a variety of problems, such as glaucoma or diabetic eye disease, ensuring you’ll get timely treatment. Most people with vision problems should see their eye doctor once a year to make sure their sight hasn’t changed.
  • Smoking now can cause eye problems later. When you smoke, cyanide from the smoke gets into your bloodstream and can destroy the eye’s cells. Smoking puts you at higher risk of developing cataracts and increases problems with dry eyes. It also raises your risk of macular degeneration, an incurable condition that destroys vision in the center of the eye, according to the Centers for Disease Control and Prevention (CDC).
  • You can help preserve your eyesight by protecting your eyes from the sun. two safeguards for your eyes: sunscreen and sunglasses. The skin around your eyes is some of the thinnest on the body and is susceptible to ultraviolet (UV) radiation. Various kinds of skin cancer, like carcinoma and melanoma, can form in the eyelids and around the eyes, causing major damage to the eye structure.
  • Sunglasses are also a must,. But don’t be fooled into thinking the darker, the better. “It’s the sticker you peel off of the glasses when you buy them” that matters. Sunglasses should have complete, 100 percent protection from UVA and UVB (long and short wave) rays. Ultraviolet radiation stimulates the issues that cause both cataracts and macular degeneration  common causes of sightlessness.
  • Working on a computer all day can give you dry eyes. This is in part because when we do things up close, we don’t blink as much. Paradoxically, one of the most common symptoms of dry eyes is an eye that waters. The breakdown of the oily and mucous layers of the eyes keeps tears from evaporating, and the eye compensates by producing more water. Having “tired eyes” at the end of the day is another symptom.
  • Diabetes is the top cause of blindness.  Nearly all patients with type 1 diabetes develop this eye condition, as do about 60 percent of those with type 2 diabetes.
  • In diabetic retinopathy, the tiny blood vessels of the retina are damaged. While no symptoms appear during the early stages of the condition, it is critically important to catch retinopathy as soon as possible via regular eye exams. Over time, your vision can blur and lead to blindness. Controlling blood sugar, blood pressure, and cholesterol can prevent the disease from getting worse . Diabetic retinopathy may be treated by laser surgery, which can reduce the risk of further sightlessness. However, treatment cannot repair vision that is already lost.
  • After age 60, macular degeneration is a leading cause of sightlessness. Macular degeneration occurs when eye tissue degenerates, causing blurriness or loss of vision in the central part of the eye. There are two forms of macular degeneration: wet and dry. If vision loss is caused by fluid in the retina, the condition can be treated by injections in the eye. But most forms are dry, for which there is no treatment.
  • Risk factors for macular degeneration include a family history of the condition, smoking (which damages the eye’s blood vessels), a lack of lutein and zeaxanthin in the diet, and not protecting your eyes with sunglasses.