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Our eyes are similar to cameras which reflects the light off surfaces to produce images we see. The iris (a muscle which acts as a lens) controls the size of the pupil (can be can be considered as an aperture).
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FEW EYE DISEASES THAT ARE COMMON Our eyes are similar to cameras which reflects the light off surfaces to produce images we see. The iris (a muscle which acts as a lens) controls the size of the pupil CONJUNCTIVITIS 1 A swelling or inflammation of the conjunctiva, the thin, translucent layer of tissue which lines the inner surface of the eyelid and covers the white part of the eye. DIABETIC RETINOPATHY 2 This condition relates to the people who are already suffering from Diabetes. It causes damage to the retina, the light-sensitive eye part at the back of the eye. GLAUCOMA 3 A group of disorders leading to radical damage to the optic nerve. A major cause of this disease is due to loss of nerve tissues. It may lead to vision loss as well. MACULAR DEGENERATION 4 An eye disease affecting the macula (the middle of the light-sensitive retina at the back of the eye). Can result in loss of central vision. CROSSED EYES Also referred to as strabismus, the condition deals with both eyes looking at a same place at the same time. It typically occurs in those who are very farsighted. 5 ASTIGMATISM 6 A vision condition that causes blurred vision due to the irregular shape of the cornea or at times the curvature of the lens inside the eyeshadow. CATARACT 7 A cloudy or opaque area develops over the normally transparent lens of the eye located behind the iris. DRY EYE 8 A state in which there are insufficient tears to lubricate and moisturize the eye. Source - https://www.healingtheeye.com