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The protein is arranged in a precise way that keeps the lens clear and lets light pass through it.īut as we age, some of the protein may clump together and start to cloud a small area of the lens. The lens is mostly made of water and protein. It also adjusts the eye’s focus, letting us see things clearly both up close and far away. The lens inside the eye works much like a camera lens, focusing light onto the retina for clear vision. If you think you have a cataract, see an eye doctor for an exam to find out for sure. On the other hand, a subcapsular cataract may not produce any symptoms until it’s well-developed.
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Unfortunately, the improved vision is short-lived and will disappear as the cataract worsens. When a nuclear cataract first develops, it can bring about a temporary improvement in your near vision, called “second sight.” The type of cataract you have will affect exactly which symptoms you experience and how soon they will occur. Colors may not appear as bright as they once did. Or you may notice when you drive at night that the oncoming headlights cause more glare than before. You may notice that your vision is blurred a little, like looking through a cloudy piece of glass or viewing an impressionist painting.Ī cataract may make light from the sun or a lamp seem too bright or glaring. This type of cataract occurs in the lens cortex, which is the part of the lens that surrounds the central nucleus.Ī cataract starts out small and at first has little effect on your vision. Nuclear cataracts usually are associated with aging.Ī cortical cataract is characterized by white, wedge-like opacities that start in the periphery of the lens and work their way to the center in a spoke-like fashion. People with diabetes or those taking high doses of steroid medications have a greater risk of developing a subcapsular cataract.Ī nuclear cataract forms deep in the central zone (nucleus) of the lens. In fact, there are more cases of cataracts worldwide than there are of glaucoma, macular degeneration and diabetic retinopathy combined.Ī subcapsular cataract occurs at the back of the lens.
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Alarcos Cieza: Unit Head, Sensory Functions, Disability and Rehabilitation in WHO, also participated in the technical panel discussion and provided further details on the WHO Report as well as its work on prevention of blindness and promoting eye care. Participants voiced their concerns of disrupted services for eye care, particularly in the context of the COVID-19 pandemic, and stressed the need to strengthen health systems so that eye care becomes an integral part of health care service delivery to ensure all people obtain the eye care services they need without hindrance or financial hardship.A cataract is a clouding of the eye’s natural lens, which lies behind the iris and the pupil.Ĭataracts are the most common cause of vision loss in people over age 40 and is the principal cause of blindness in the world. He expressed appreciation of the Member States’ support in implementing the recommendations included in the WHO World Report on Vision fortified by the recent adoption of the WHA resolution 73.4 - ‘Integrated people-cantered eye care, including preventable vision impairment and blindness’. Dr. WHO ADG Stewart Simonson gave key remarks, presenting WHO’s work on the issue and emphasizing the importance of multi-sectoral approach to scale up integrated people-centred eye care for all. In recognition of World Sight Day 2020, the UN Friends of Vision, the Permanent Missions of Antigua and Barbuda, Bangladesh and Ireland to the United Nations, organized a high-Level event entitled ‘2020 and Beyond: Accelerating Vision for Everyone’. The event was aimed at bringing awareness and global attention to blindness and vision impairment, as well as discussion with Member States the way forward towards a UN General Assembly resolution on Vision Care and a preview of the forthcoming report of The Lancet Global Health Commission on Global Eye Health.