Obat Cataract4 Nov 2017
In the UK, most people who are aged 65 or older have some degree of visual impairment caused by cataracts. In most cases, delaying cataract surgery will not cause long-term damage to your eye or make the surgery more difficult.
A family history for early development of cataracts, the presence of diabetes , tobacco use, and prolonged exposure to sunlight are also risk factors, as is trauma to the eye. Cataracts that develop in the posterior subcapsular area (in the rear region of the lens capsule) are more common in younger age groups. A cataract is an eye disease in which the clear lens of the eye becomes cloudy or opaque, causing a decrease in vision.
But since cataracts and other conditions, such as glaucoma , are common in older adults, it’s important to get your eyes checked regularly. The lens focuses light that passes into your eye, producing clear, sharp images on the retina — the light-sensitive membrane in the eye that functions like the film in a camera. Cataracts can also be caused by other eye conditions, past eye surgery or medical conditions such as diabetes.
Most cataracts develop when aging or injury changes the tissue that makes up your eye’s lens. If you develop sudden vision changes, such as double vision or flashes of light, sudden eye pain, or sudden headache, see your doctor right away. At first, the cloudiness in your vision caused by a cataract may affect only a small part of the eye’s lens and you may be unaware of any vision loss.
Most cataracts develop slowly and don’t disturb your eyesight early on. But with time, cataracts will eventually interfere with your vision. Clouded vision caused by cataracts can make it more difficult to read, drive a car (especially at night) or see the expression on a friend’s face. For people who have cataracts, seeing through cloudy lenses is a bit like looking through a frosty or fogged-up window.
Posterior capsular opacification, also known as after-cataract, is a condition in which months or years after successful cataract surgery, vision deteriorates or problems with glare and light scattering recur, usually due to thickening of the back or posterior capsule surrounding the implanted lens, so-called ‘posterior lens capsule opacification’. 6 Poor vision caused by cataracts may also result in an increased risk of falling and depression 2 Cataracts are the cause of half of blindness and 33% of visual impairment worldwide. A cataract is a clouding of the lens in the eye which leads to a decrease in vision 1 Cataracts often develop slowly and can affect one or both eyes.
The study, as reported in The American Journal of Clinical Nutrition, examined the dietary surveys filled out by 27,670 self-reported nondiabetic people aged 40 or over and monitored their medical records to see if and when cataracts developed. The lens inside the eye works much like a camera lens, focusing light onto the retina for clear vision. Most patients have good unaided distance vision following cataract surgery, however some patients will require glasses to fine tune their distance vision for optimum results.
With some nuclear cataracts changing the glasses prescription can improve your vision enough to defer surgery. Mature cataracts can be seen with the naked eye however most cataracts are diagnosed by checking the clarity of the lens with a microscope. After making a small incision in the transparent layer at the front or your eye (the cornea), a surgeon will then use ultrasound (sound waves) to break the cataract down into small pieces to make the lens easier to remove.
Management of a variety of common eye problems, including cataracts, glaucoma, conjunctivitis, dry eye, blepharitis, diabetic eye, and macular degeneration. Cataracts are treated with surgery to remove the clouded lens, and are replaced with a new, clear intraocular lens implant. It is important to seek prompt consultation if one experiences loss of vision, excessive pain or increase in eye redness following cataract surgery.
It is highly successful, with a complication rate less than 1 %. Not all cataracts require surgery, and for some, a change in their glasses, stronger bifocals, or the use of magnifying glasses may improve the vision to an acceptable level. The most effective treatment for cataracts is a small operation to remove the cloudy lens, and replacing it with a lens implant. However, one eye may be worse than the other because each cataract develops at a different rate.
Normally light enters the eye from the front, passes through a clear lens, and reaches the retina so one can see. Many patients therefore choose to have their eyes corrected for a mixture of distance and near vision as a compromise, so they do not need to wear glasses full time. Treatment involves removing the cloudy natural lens inside your eye and replacing it with a new clear artificial lens that has been selected to give good vision.
A special magnifying lens is used to look inside your eye to see if you have a cataract and how bad it is. You can’t see cataracts without looking into your eye, unless you have very bad ones. Normally the protein is arranged in a precise way so that the lens is clear and light can easily pass through it. Cataracts occurs when the protein in your lens clump together. If you have cataracts in both eyes, surgery is usually done one eye at a time, usually several months apart.
Wear eyeglasses or contact lenses to help correct blurred vision; Because cataracts usually progress slowly, you may wish to delay cataract surgery if you are currently experiencing only minor symptoms. Your doctor will refer you to an eye specialist (ophthalmologist), who can discuss the risks and benefits of cataract surgery with you.
Another way to examine your eyes is using a slit lamp, which allows your doctor or optometrist to see the structures in your eye, including the lens, under higher magnification. However, a cataract in one eye may be more advanced and cause more symptoms that a cataract in the other eye. If you are experiencing symptoms of vision loss or changes, make an appointment with an ophthalmologist.
A cataract is when the lens of your eye becomes cloudy causing blurry or dim vision. For more information about cataracts and cataract surgery, visit the ” Facts About Cataract ” page published by the National Eye Institute. The cloudy portion of the lens (the cataract) is removed from the eye using a technique known as phacoemulsification.
It is important to have a complete, dilated eye examination, preferably by the operating ophthalmologist, in order to determine if cataract is present, and if it is causing any loss of vision. While the primary goal of cataract surgery is to restore the patient’s best possible vision by removing the cataract, it is also possible to minimize the need for glasses or contact lenses by choosing the best possible lens implant for the patient. All of the surgeons of Richmond Eye Associates perform cataract surgery using modern, small incision techniques using state-of-the-art surgical equipment with highly trained operating room nurses and staff.
Surgery cannot always be delayed, though, because of the risk of amblyopia and permanent vision loss. In some children, surgery to remove a cataract that causes a lot of vision loss may be very important in preventing blindness. People usually need reading glasses (glasses for near vision) after cataract surgery, no matter which type of surgery is done.
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