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FAQ's |
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1. How the Normal Eye Works?
Light passes through the cornea-the curved, clear front surface of the eye. It then passes through the pupil and the lens. The curved surface of the cornea and the lens inside the eye bend the light rays so that images of distant objects are focused on the retina, the layer of nerve cells in the back of the eye. Rays of light from near objects must be bent more than rays of light from distant objects to focus them sharply on the retina. Therefore, the lens inside the eye must change its shape to maintain a sharp image when looking from distant to near objects. The lens becomes somewhat rigid with age, which is why most older people need reading glasses or bifocals to read.
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2. What are Cataract ?
A cataract is the clouding of the normally clear, natural crystalline lens of the eye. The lens is composed of water and protein. The protein is arranged in a highly organized pattern that allows light to pass through it with minimal distortion. As a result, the lens appears virtually clear. The lens can become cloudy (see Causes of Cataracts), blocking or scattering some light and preventing it from reaching the retina in sharp focus. This causes blurred vision and glare.
Most cataracts progress slowly over a period of years, but their rate of progression is unpredictable. They can affect one eye or both eyes. As cataracts become more dense, they produce visual symptoms; these typically include blur, glare, halos around lights, and double vision. Colors can become dull, a brown-yellow tint is common, and driving can become dangerous. Untreated, cataracts can cause blindness. In the U.S., however, cataracts are usually treated when they begin to interfere with activities of daily living such as reading and driving.
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3. What causes Cataract?
- Age. Most Americans older than 60 years have cataracts.
- Medical conditions. Diabetes and other systemic diseases, glaucoma, and metabolic abnormalities can cause cataracts.
- Physical injuries. Commonly called traumatic cataracts. A blow to the eye, great heat or cold, chemical injury, exposure to radiation (usually associated with radiation therapy for cancer patients), and other injuries can lead to cataract formation.
- Ultraviolet radiation (UVA or UVB). Long-term exposure to sunlight is believed to speed the development of cataracts.
- Oral steroids and other medications. Oral steroids (such as prednisone), the gout medication allopurinol, the breast cancer drug tamoxifen, the heart medication amiodorone, and the long-term use of aspirin have also been associated with cataracts.
- Smoking. Studies indicate that smokers are twice as likely to develop cataracts than nonsmokers and that quitting can reduce the risk for developing cataracts.
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Some Common Questions LASIK
How successful is laser vision correction at Sushil Netralaya,Nasik?
Our goal and our commitment to you is to get you to a visual acuity of 6/9 (20/40) or better, enough to function without glasses, to watch TV, play sport and take up occupations where good vision is essential. In fact, after treatment at Sushil Netralaya, over 95% of people can drive without glasses. Our consultants will discuss with you at the time of your consultation what can be achieved in your individual case.
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Does it hurt?
No. Wavefront Guided LASIK is virtually painless. You may experience some mild to moderate discomfort and watering of the eyes for a few hours after treatment. This varies from person to person and has been likened to the sensation of having worn contact lenses too long.
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Do the results last?
The effects of LASIK are permanent and they do not wear off. But it is important to realize that a person's eye can still change internally. That is why many surgeons recommend having the procedure done after the major eye changes have occurred in one's life. Your surgeon can review the changes you have had and help you make a decision whether or not to have LASIK done.
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What happens when I get older?
Natural changes occur in every eye. As we reach our mid 40's, the fine focusing mechanism of the lens within our eyes does not function as well as when we were younger. As a result of this, all of us will require reading glasses or a bifocal segment in our existing glasses. Therefore, it is most likely that you will require glasses for reading fine print when you reach your mid 40's. It is because this age-related change affects the lens in our eye and not the cornea that LASIK cannot treat this change.
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If I get LASIK done and my vision changes later in life, can it be redone?
In most cases, an enhancement may be a solution to vision changes later in life. Your eye care specialist will examine your eyes and determine whether an enhancement can be performed.
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Can both eyes be corrected at the same time?
Because of advanced technology associated with LASIK, both eyes are most often treated at the same time.
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Can Dry Eye be diagnosed before the treatment?
Dry eye is hard to to diagnose in its mild to moderate forms, but we do know that contact lens wearers are at a higher risk for dry symptoms. Other potential risk factors, such as hormone and drug use and the environment, make differential diagnosis a challenge.
Skin and eyelid care, avoiding toxic solutions, making the environment free of wind, smoke and dryness, avoiding drugs that dehydrate and better blinking can maximize comfort.
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