Tag Archives: cataracts

Types of Blindness

19 Oct

Blindness is the condition where one lacks visual perception due to physiological or neurological factors. 

Complete Blindness:

Complete or Total Blindness is the complete lack of form and visual light perception and is clinically recorded as NLP, an abbreviation for No Light Perception. Blindness is frequently used to describe severe visual impairment with residual vision.

Complete blindness causes complete darkness in the affected person’s sight. There is no perception of light, color, shape or movement.

Complete blindness, though rare, can be caused by any type of retinal detachment or damage to the optic nerve or a disease that attacks the central nervous system, such as brain tumor or a stroke.

Legal Blindness

Legal blindness is defined as having equal to or worse than a 20/200 visual acuity in the better eye with the best correction possible.

Legal blindness typically indicates that the central vision is lost while the peripheral vision is usually intact. Patients are usually able to function to a certain extent.

This means that a legally blind individual would have to stand 20 feet (6.1 m) from an object to see it, with corrective lenses and with the same degree of clarity as a normal sighted person could from 200 feet (61 m). People with average acuity, who nonetheless have a visual field of less than 20 degrees (the norm being 180 degrees), are also classified as being legally blind. 

Colour Blindness

People who suffer from Colour blindness, also called dyschromatopsia, are unable to distinguish between certain colors.

This type of blindness usually affects men and the most common form of color blindness is red-green color blindness. Color blindness is almost always present since birth and is usually caused by the presence of a defective gene in the X chromosome. 

Night Blindness

Night blindness is vision impairment that occurs at night or when the surrounding light is dim.

It does not generally result in a complete lack of vision, but significantly impairs vision. People with night blindness often have difficulty driving at night or seeing stars. These factors include cataracts, birth defects, Vitamin A deficiency or a retinal disease called Retinitis Pigmentosa.

Signs of blindness in babies

Blindness in children is extremely rare and is very difficult to detect, especially in newborns.

Premature babies are more vulnerable to blindness. If a baby is born blind, it’s usually because of abnormalities during development, a hereditary disease, injury at birth or congenital infection that caused the damage. 

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Vitamins For Your Eyes

4 Jul

Eyes are one of the most hard-working parts of our bodies. Their significance in our lives is invaluable. Our very understanding and appreciation of the world comes from our vision, for which, the eyes are solely responsible. We, in turn, owe it to ourselves and to our eyes, to provide proper nourishment, so they stay healthy. That Vitamins are essential for our eye health is a largely known fact. But what other foods, are good for our eyes?

  1. Zinc is an essential requirement for the eyes. While that may sound a bit odd, there is a reason our mothers insist we had yogurt. One of those reasons is that yogurt is a great food source for Zinc. Without Zinc, the protective pigment called Melanin is not produced in sufficient quantities. So dairy products, meats and beans are a must

  2. Green leafy vegetables are a big prerequisite, because they prevent eye-diseases. With the Lutein they generate, leafy vegetables and eggs slow down the degeneration of eyes, preventing illnesses such as cataracts.

  3. Another highly recommended eye food is anything rich in Omega 3 Fatty Acids. They too help arrest the aging process of the eyes, and keep them young & active. The best sources of Omega 3 Fatty Acids are fish such as Salmon, and fish oil.

  4. Next up is foods rich in Vitamins. Vitamins give our eyes the strength and fortification they need, to prevent disease and stay strong in the face of the bodily wear and tear. Nuts, almonds, sweet potatoes; there are many foods that are a great source of vitamins

  5. And finally, there is the age-old favorite – the carrot. Something that one has heard grandparents, parents, doctors, and even popular culture talk about constantly. Carrots give us beta carotene, an anti-oxidant vital to the health and longevity of eyes and their muscles.

Our eyes are our most powerful tools. They let us see the beautiful world, to see our loved ones, to learn, to appreciate, and to be human. Treat them with care and with the food they rightly deserve!

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