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Eye Disease and Their View

Eye Disease and Their View. Common Eye Diseases. M acular degeneration Cataracts Diabetic retinopathy Glaucoma Presbyopia-refractive error Diplopia Floaters Night Blindness. Internal anatomy of the eye. The Retina. Retinal blood vessels. Macula (fovea in centre). Optic nerve.

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Eye Disease and Their View

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  1. Eye Disease and Their View

  2. Common Eye Diseases • Macular degeneration • Cataracts • Diabetic retinopathy • Glaucoma • Presbyopia-refractive error • Diplopia • Floaters • Night Blindness

  3. Internal anatomy of the eye

  4. The Retina Retinal blood vessels Macula (fovea in centre) Optic nerve

  5. What is Macular Degeneration? • Wet and ray macular degeneration causes blurred vision • Macula-basically the fovea centralis-focal point of vision. • Wet-blood vessels build up under retina and leak blood • Dry-tissue in the macula thin and break down. • Difficulty distinguishing visual images

  6. Macular Degeneration (MD)

  7. What is a cataract? • A cataract is the clouding of the lens inside the eye. With a cataract, light is scattered as it enters the eye, causing blurred vision

  8. Cataract

  9. What is diabetic retinopathy? • This condition is a complication of diabetes • It affects the small blood vessels of the retina • Blood vessels begin to leak and bleed inside the eye

  10. Diabetic retinopathy

  11. What is glaucoma? • It is a disease that affects the optic nerve at the back of the eye • Relieving pressure on the nerve reduces progression of the disease • Early detection and treatment can slow the vision loss • Caused by build up of aqueous humor faster than it is degraded. Pressure increases in eye.

  12. Glaucoma

  13. What is presbyopia(refractive error)? • Refractive error is a focusing disorder of the eye • Over the age of 40 years, 22 per cent of the population has refractive error • It is correctable by wearing glasses or contact lenses or refractive laser surgery (selected cases) • Inability to accommodate, near point of vision moves further away.

  14. Presbyopia

  15. What is diplopia? • Deviating eye causes double vision. • Turning eye may eventually become blind as a result of the brain suppressing the image from the wandering eye.

  16. Diplopia

  17. What are floaters? • Spots or specs that appear to be “floating” across your field of view. • Most eye floaters are caused by age-related changes that occur as the jelly-like substance (vitreous) inside your eyes becomes more liquid. • Microscopic fibers within the vitreous clump together and cast tiny shadows on the retina

  18. Floaters

  19. What is night blindness? • Night blindness (also called nyctalopia) is the inability to see well at night or in poor light. It is not a disease, but rather a symptom of an underlying disorder or problem, especially untreated nearsightedness. • Can be caused by lack of vitamin A which effects the rods.

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