What is the Main Cause of Blindness?

August 1, 2023 | by Yashaswi Pathakamuri | Posted in FAQ's

The main cause of blindness worldwide can vary depending on factors such as region, age group, and access to healthcare. However, some of the leading causes of blindness globally include:

  • Cataracts: Cataracts are the leading cause of blindness worldwide. A cataract is a clouding of the lens in the eye, leading to vision impairment or blindness if left untreated. Cataracts are most common in older adults.
  • Glaucoma: Glaucoma is a group of eye diseases that can damage the optic nerve, leading to vision loss and blindness. It is often associated with increased intraocular pressure.
  • Age-Related Macular Degeneration (AMD): AMD is a condition that affects the macula, the central part of the retina responsible for sharp central vision. It is a leading cause of vision loss in older adults.
  • Diabetic Retinopathy: Diabetic retinopathy is a complication of diabetes that affects the blood vessels in the retina and can lead to vision loss or blindness if not managed.
  • Trachoma: Trachoma is a bacterial eye infection that can cause scarring of the eyelids, leading to eyelashes turning inward and scratching the cornea, eventually causing blindness if untreated. It is more prevalent in certain parts of Africa, the Middle East, and Asia.
  • Corneal Opacities: Opacities or scarring of the cornea due to various factors, including infections and injuries, can cause vision loss and blindness.
  • Childhood Blindness: In children, causes of blindness include conditions like congenital cataracts, retinopathy of prematurity (ROP), and infections like measles leading to complications.
  • Uncorrected Refractive Errors: Refractive errors such as nearsightedness, farsightedness, and astigmatism, if not corrected with glasses or contact lenses, can lead to significant visual impairment.

It’s important to note that many of these causes of blindness are preventable or treatable, especially if detected early. Regular eye check-ups, early intervention, and access to proper healthcare are crucial in preventing and managing vision loss and blindness. For any concerns about your vision or eye health, it is best to consult with an eye care professional.

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