Posts Tagged ‘natural lens’

Shortcomings of LASIK surgery

LASIK is far from perfect in some aspects, although many people especially those professional sports individuals strongly recommend the surgery. Most people have emphasized on advantageous sides of LASIK surgery but ignored its shortcomings.

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The Pros and Cons of Lasik Surgery

Lasik is getting very popular lately to correct for refractive lens problems such as short sightedness, long sightedness and astigmatism. However, before you join the crowd blindly and go for Lasik, weigh the pros and cons first. This is called taking an informed decision. Understanding the basics of Lasik will enable you to choose the best options to correct your eye sight.

You have a natural pair of lens in your eyes that you are born with. Those of you who are fortunate will have very little problems with this set of natural lens. However, some of you may have defective lens, causing blurred images to be received by your eyes. These blur images resulted because the light reflected from external images cannot be focused correctly on your retina. Short sightedness and long sightedness are due to under or over focus of the images on your retina, while astigmatism is due to uneven focusing of images on your retina.

Lasik can help to repair the focusing of images with your natural lens, as it uses laser that can target specific tissues or muscles very precisely for repair. However, Lasik, being an artificial means, also brings with it a certain amount of risks and costs for the procedures, and pre and post consultations. I used to wear eye glasses for short sightedness, but have threw away my glasses several years ago. No, I did not go for Lasik, but instead opted for low cost, safe and natural means to improve my eye sight.

I now have perfect vision in my right eye, and near perfect in my left. I have searched for natural ways to improve my vision, and have found one that actually works for me. Do check out the scientifically proven, natural and easy way to improve your vision, without burning a hole in your pocket. Go to the website http://health11.info for more information.

Jim Kirk has always been interested in natural healing, and has researched on multiple topics in this area. He is a much sought after public speaker and a writer. He highly recommends the natural healing methodology at http://health11.info to recover your vision naturally and easily with a scientifically proven trademarked method.

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Article Source:http://www.articlesbase.com/vision-articles/the-pros-and-cons-of-lasik-surgery-1771277.html

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How a Cataract Surgery Is Done

Cataract is the clouding of the lens of the eyes. It affects vision. A thin lining of cloudy natural lens is removed from the eye because it blocks the passage of light. This is how a cataract surgery is done. Cataract surgery is a harmless procedure. Every year, there are more than 1.6 Americans who undergo this treatment to repair their vision. More than half of the American population have cataract or may have been through a cataract surgery by the age of 80. Some people believe that when one eye has cataract, the other eye will definitely be next. This is a myth. Cataract doesn’t spread. It can occur in either or both eyes though.

 

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On the day of the surgery itself, there is a list of things to do such skipping breakfast and avoiding intake of liquids. An eye drop to dilate pupils and sedative are given prior to the actual procedure. Topical anesthesia is also given in order for the patient not to feel the pain. After the areas around the eyes were completely cleansed and after a sterile covering is put into place, at least a small cut is done into the eye to enable the surgeon to remove the cloudy lens. There are two methods to remove the cloudy lens. One is through sonically breaking up the cataract then extracted out of the eye. The other one is through mechanically breaking up the cataract into small pieces then removed from the eye through a small incision. After this, a plastic or silicon intraocular lens will replace the natural lens that was taken off the eye.

 

After the operation, a protective shield is placed on the eye. Then the patient is usually sent home after few minutes in the recovery room. Surgeons advise patients to apply eye drops for a number of times in a day. This goes on for few weeks depending on the surgeon’s advice. Just like any other medical procedure, there are dos and don’ts patients are given to ensure effectiveness of the operation.

 

The price of a cataract surgery is around $3,000, exclusive of health insurance. Fortunately, HMOs, Medicare and other health insurances cover this specific surgery. It is indeed pricey however, the American Society of Cataract and Refractive Surgery reports 98% of the patients believe it is highly recommended since it simply worked for them.

 

 

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Article Source:http://www.articlesbase.com/vision-articles/how-a-cataract-surgery-is-done-1490497.html

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Understanding Cataract Symptoms

Cataract is a malfunction of the human lens. It actually is an opacity or cloudiness of the natural lens inside the eye. Cataract comes often – but not exclusively – with old age, and it’s very common among old people.

The amount of lens opacity is influenced by various factors and differs from person to person. Most people who suffer from cataract have it in both eyes, but it’s also possible to have it in one eye only.

Cataract is not contagious from one eye to the other, or between persons, and once it is removed completely, it will not come back. Cataract can start very mild, and there’s a huge difference between people in how fast it progresses. If cataract comes with old age, it can progress through years, while in traumatic cataracts, it can mature in days or even hours.

Cataract Symptoms

The most common symptoms of developing cataracts are:

1. Cloudy or blurred vision that gradually gets worse over time. There shouldn’t be any pain associated with your blurred vision. Eyes that are painful and red are more likely to be effected by glaucoma rather than cataracts. You should see a doctor immediately if there is sudden and complete loss of vision.

Young people are more likely to notice the blurring, even if they only have mild cataract symptoms. Older people are less likely to report blurred vision even if their cataracts are more advanced. Distance vision is usually more blurred than near vision. As a cataract thickens, even reading vision can start to get blurry.

2. Lower contrast between colors.

3. Increased levels of glare when you are faced with bright sunlight, or headlights during night time driving.

4. You may start to see a halo around lights, even during the daytime.

5. Night vision will start to decrease and you will have trouble seeing when it is dark.

6. Double vision can occur when cataract occurs in one eye(also referred to as monocular double vision). If you cover one eye, you will still have double vision. This is one symptom that may actually disappear as the cataracts get worse.

7. If you wear prescription glasses, you might find that they need to be changed frequently as the refractive power of your eyes changes.

8. One unusual symptom is that your near vision may actually improve and become clearer without the use of prescription glasses. This phenomenon is called “second sight”.

Though these symptoms may all point to possible cataracts, they can also indicate other potential eye problems. If you experience any of these above symptoms, you should make an appointment with an eye care professional as soon as possible.

Sam Shad is the editor of Online-Eye-Info.com, the comprehensive guide for maintaining healthy eyes and sight. Read more about cataract surgery complications at his site.

Article Source:http://www.articlesbase.com/vision-articles/understanding-cataract-symptoms-1450058.html

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Approved and investigational accommodation IOLs

As we know, some people above 40 can not see clearly at multiple distances, which is caused by the lens’ natural aging and becoming rigid to move smoothly. Among all of the IOLs, accommodation IOL such as the Crystalens has a special design to treat the described presbyopia. An accommodation IOL provides sharp vision by shifting its position with the action of eye muscle and movement, rather than by simply replacing the natural lens. Accommodation IOLs belong to presbyopia-correcting IOLs, so that patients can get multiple distance vision from them.

Firstly approved in 2003, the Crystalens is the only IOL that uses accommodation technology. Bausch & Lomb now is marketing several versions of Crystalens. The newest version claims that it has better near vision and lower side effects.

Among the four types of presbyopia-correcting IOLs, Crystalens IOL is unlike the other three types, which are called multifocal IOLs. Multifocal IOLs perform just like multifocal lenses that the patient should look through an appropriate zone to get certain distance vision. However, IOLs are much smaller than contact lenses, so that these divided zones on IOL are too small to provide clear single vision. Using accommodation, Crystalens can always maintain one focusing zone for any distance vision. A disadvantage of Crystalens IOL is that it provides a narrowed range of focus.

Patients should be aware that neither monovision IOLs nor presbyopia-correcting IOLs can provide perfect vision. Even standard monofocal IOLs may bring night glare and halos. This situation is also true for Crystalens IOLs, which suit people with both presbyopia and cataract. In addition to common complications, Crystalens is reported to bring potential astigmatism and posterior capsule clouding.

Besides Crystalens, there are several types of accommodation IOLs that are still under tests. Approved in Europe, the Synchrony IOL is undergoing clinical trials in US. Synchrony has been proved to bring fewer visual distortion and better intermediate distance vision than ReSTOR. Another type is Tetraflex, which has a square-edged, acrylic optic.

Article Source:http://vision.firmoo.com/eye-diseases/approved-and-investigational-accommodation-iols.html

Vision Library is the information source in area of vision care, including eyeglasses, sunglasses, contact lenses, sports protective eyewear, vision error and diseases, vision surgery, ageing and kid’s vision etc., solely sponsored by Firmoo.com, an emerging online optical store offering high quality eyewear at the lowest prices.Firmoo’s return and refund policy make any purchase risk-free.

Article Source:http://www.articlesbase.com/vision-articles/approved-and-investigational-accommodation-iols-1367137.html

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