Blurriness, Glare and Fading Colors
A cataract is a cloudy area in the lens of the eye. The lens’ job is to focus light back onto the retina and to adjust focus to help you see both up close and at a distance. The lens is composed of protein and water. A healthy lens should be clear. When protein clumps together in an area of the lens, making it opaque, that’s a cataract.
With cataracts, symptoms always start “with some level of blurred vision that is not corrected by your eyeglasses,” says David Chang, a clinical professor of ophthalmology at the University of California–San Francisco. Symptoms are all visual, he says, and have nothing to do with your eye being red or uncomfortable.
“Sometimes it’s subtle,” Chang says. “Sometimes people think their vision isn’t that bad. But what it really amounts to is that they’re just working a lot harder. You’re compensating because it’s a very gradual process.”
Besides reducing clarity, cataracts can affect color perception over time. Colors may fade, and as the lens gradually turns yellow/brown, your vision can take on a brownish tint, according to the National Eye Institute. With advanced discoloration, you may not be able to distinguish purple or blue from black. Double vision or seeing multiple images with one eye can also be a problem. Night vision can deteriorate, glare increases and you may see a halo around lights.
Some people with cataracts never need surgery, and waiting a few years until you’re ready is fine, the NEI says. But when adaptations and adjustments – such as new eyeglasses, anti-glare sunglasses, brighter lighting and using a magnifying glass – don’t work anymore, it may be time.
According to the American Academy of Ophthalmology, about 24.5 million Americans are affected by cataracts, and cataract surgery is the most common major eye procedure.
Aging and Other Risk Factors
Cataracts often come with aging, but can also be due to an eye trauma, congenital conditions or radiation contact. They can be related to diabetes or to medical treatment with systemic steroids. Secondary cataracts can develop after eye surgery, like surgery for glaucoma.
“There’s no question that advancing age is the number-one risk factor,” says Chang, who is past president of the American Society of Cataract and Refractive Surgery. “However, it’s not unusual for people to develop cataracts in their 40s and 50s.” Highly nearsighted people tend to develop cataracts at a much younger age, he says.
Family history is another risk factor. Dickey’s family tree is filled with cataracts: his great-grandfather, father, a sister and a brother all had them. When Dickey did an informal “eye genealogy,” he found an old-fashioned photo of his great-great-grandfather with the word “blind” printed beneath.
One step people can take to prevent early cataracts, particularly those who spend a lot of time outdoors, is reducing their exposure to ultraviolet light, Chang says – like fishermen wearing sunglasses to protect their eyes.
Postponing the Inevitable
Dickey’s first cataract developed at 52, starting as “a little speck” in the center of his eye and gradually progressing in the next couple years from a “light mist” to a “London fog” that got thicker and more opaque.
He’d delayed cataract surgery as long as he could. With both myopia (nearsightedness) and astigmatism (an irregularly shaped cornea or lens) since his teens, he’s tried remedies such as supplements, acupuncture and Ayurvedic medicine, an ancient holistic approach, to improve his vision. Both an actor and a rancher, Dickey continued to work outdoors without too much difficulty but still relied more and more on his wife, who eventually took over driving.
Driving often triggers people toward having the surgery done, Chang says – when they have glare symptoms during night driving and trouble with far-distance details like road signs.
Artificial Lens Replacement…………………………
Read more: http://health.usnews.com/health-news/patient-advice/articles/2014/12/01/getting-clear-on-cataracts
Source: US News