A cataract is a discoloration of the lens of the eye which causes the loss of its transparency causing visual disturbances. The chances of developing cataracts increases with age. Most people older than 65 can expect to have a cataract in at least one eye. Other contributors to cataract development include genetics, malnutrition, diabetes, infection or trauma to the eyes. Recognition of early symptoms of cataracts is essential for prevention of serious vision problems.
Experts have estimated that visual disability associated with cataracts accounts for over 8 million physician office visits a year in the United States. This number will likely continue to increase as the proportion of people over the age of 60 rises. When people develop cataracts, they begin to have difficulty doing activities they need to do for daily living or for enjoyment. Some of the most common complaints include difficulty driving at night, reading, participating in activities, or traveling to unfamiliar areas; all activities where clear vision is essential.
白内障原因
镜片主要是水和蛋白质的。镜片内的特异性蛋白质负责保持其清晰度。多年来，这些镜片蛋白的结构被改变，最终导致镜片的渐渐覆盖。随着时间的推移，眼镜和联系人也可能不再工作，帮助您清楚地看到。在注意到任何视力变化或损伤后，应始终是第一步。彻底的眼科检查可以确定问题，建议使用什么视力校正手术。白内障手术是美国最常见，最安全，最成功的手术中的最常见，最安全，最成功的手术。
许多人甚至不认识到白内障的早期迹象，他们只是知道他们不再看到了。有些患者早在40岁时开始具有早期白内障症状。然而，白内障也可能在比40年龄较小的那些比较年轻的那些中发展。大多数保险计划使用标准镜头的白内障手术程序支付，受扣除和共同支付。
Intraocular lens or Smart Lens such as ReSTOR® or CrystaLens®, replace the old lens in an eye. Ultrasound energy is used to remove cataracts. An instrument called a phaco probe is used to remove the natural lens before being replaced with an artificial lens. These premium lenses can almost eliminate the need to wear glasses, both for reading and distance vision.
Cataract surgery is an outpatient procedure and takes just minutes to perform. The advanced technology has grown leaps and bounds and is being performed more and more each year. Most people notice an immediate improvement in their vision following surgery. People resume normal activities the day after surgery. In fact with the new technologies, your dependence on glasses can be greatly reduced or nearly eliminated.
Signs of Cataracts
Cloudy vision A cataract occurs when the lens of the eye becomes cloudy.
Lens discoloration Your lens slowly changes to a yellowish or brownish color.
Myopic shift When you used to be able to see really well far away but needed reading glasses, then suddenly you don’t need reading glasses anymore, but your distance vision has gotten much worse.
Poor night vision
Glare and halos Cataracts can cause you to see glare or halos around the light sources.
Double vision
Vision changes Your prescription eyeglasses or contact lenses need frequent updating.
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