If the light rays and focus on the surface of the retina, we see clearly. When they focus a little in front of the retina or behind it we can see the blur.

The goal is flexible and in normal, clear vision, small muscles change the convexity / concavity of its shape to allow us to focus on all distances. The lens is arranged to take water and protein very translucent, so light to pass unhindered through the retina.

As we age
The lens gradually changes with age. The arrangement of proteins and water changes so that some of these proteins cluster together, creating a slight obstruction to the light. This is a cataract. Cataracts, start small, grow very slowly, and what to throw light beams when they pass. This makes them not to focus on the retina, and we learn more blur and brightness. If left untreated long enough, the Star to extend through the lens, so vision loss.

The earlier a cataract diagnosed and treated, the better we can keep our vision.

Three types of cataracts
• Nuclear cataract – start in the middle of the lens, are the diffusion caused by the outside, the aging of the lens
• Cortical cataract – begin to form at the edge of the lens, and extends inward, often caused by diabetes
• subcapsular cataract start – that form on the back of the lens, and the most frequently diagnosed in diabetics, people with high doses of steroids, people with retinitis pigmentosa, or with severe hyperopia.

The causes of cataract
Research continues on the causes. We do not know why an aging star should make or what other factors can help guide their education.

Some studies have pointed out, to UV light, so some eye doctors suggested that we protect our eyes, sunglasses and a hat shaded

Other studies suggest that the cosmic radiation, a cause, because it seems that pilots often develop cataracts

People with diabetes experience eye changes due to vascular causes. But they were also often get a cataract, as the people on steroids, tranquilizers and diuretics. It’s not whether they contribute to medical conditions or medications, more marked on the cataract.

Other studies have shown:
• excess salt
• Heavy alcohol consumption

• Smoking
• Lead

Symptoms of cataract
With the three types of cataracts, the symptoms are mild at first. You may notice in one eye.
• blurred or />
• Reduce the brightness of the color
• The glare from light sources, especially at night

The symptoms increase slowly over time. But the deterioration of vision should not be an age accompaniment. A good eye doctor will be able to determine what type of cataract you have and advise you about cataract surgery.

Cataract Surgery
It is often practiced outpatient surgery to achieve in the United States and almost all the people, the good view.
• Your doctor will examine your eyes to determine the correct power of intraocular lenses (IOL) implant is for you. The implant is lightweight plastic.
• A local anesthetic is given and a relaxing medication (some patients).
• With the help of a microscope makes the surgeon makes a small incision.
• Ultrasound can be used only to break the natural lens, so that they can be removed easily, or sometimes it is eliminated in the state. Membrane behind the lens (posterior capsule) is left intact.
• The implant is inserted and gently closed the incision. absorbable sutures are used.
• Next, your doctor will go a visor and you can go home the same day.

In some cases, the posterior capsule becomes cloudy after cataract surgery. This makes your vision blurred again, but it can be treated with a laser. The surgeon makes a small opening in the capsule to allow light onto the retina as they should achieve.


Cataract Surgery