Posts tagged Cataract

cataract

A cataract is a clouding of the eye – the part of the eye responsible for focusing light and producing clear, sharp images. A cataract occurs when the lens of the eye cloudy or opaque is to age, illness or trauma. This haze can with the eye’s natural ability to focus light directly and an image and not on the retina. Consequently, people with cataracts often result in loss of vision. />

most common symptoms are blurred vision, faded colors, seem to fade, not able to see clearly at night, double vision. Frequent changes to the prescription eye wear.

When adults over 40 should organize routine testing on an annual basis if cataracts or other diseases of the eye determine available

A thorough examination by an ophthalmologist or a trained professional eye care generally includes: -. to measure

* A visual acuity test, the light at different distances * Students, the retina and the lens of other eye problems.
* Tonometry, a standard method for measuring the fluid pressure in the eye.

symptoms in patients with cataracts often have the following symptoms: -.

* Blur Vision *
glare or light sensitivity
* doubles. Vision in one eye. *
The frequent changes in glasses.
* difficulties in reading in dim light.
* The decrease in night vision.
* yellowing or fading of colors.

types

* cataract secondary cataract – Cataracts can after surgery for other eye problems such as glaucoma form. Cataracts can also occur in humans who have developed health problems such as diabetes. Cataracts are sometimes used to


* traumatic cataract: -. Cataracts can occur as a result of eye injury, sometimes years later,

*. Congenital cataract: – Some babies are born with cataracts or develop them in childhood, often in both eyes. These cataracts may be so small that they do not affect vision. If they do, the lenses must be removed

* removal of cataracts: -. Cataracts can after exposure to certain types of radiation

Causes and risk factors

The lens behind the iris and pupil (see diagram). It works like a camera lens. It focuses on the retina of light on the back of the eye, where an image is recorded. The lens fits the eye focus, let us see things clearly near and far. The lens is mostly water and protein. The protein is exactly the lens clear and lets light has arranged through him.

But with age, certain proteins form and start a small portion of the lens cloudy. This is a cataract. Over time, the cataract may grow up and cloud over the lens, making it harder to see. Researchers suspect that there are several causes of cataract, such as smoking and diabetes. However, it is possible that the protein in the lens changes only need to wear over the years.

The most common symptoms of cataract: –

* Cloudy or blurred vision, colors seem faded

* glare * … Headlights, lamps or sunlight may appear too bright. A halo around lights.
* Poor visibility at night.
* Double vision or multiple images in one eye. (This symptom may clear as the cataract gets larger.)
* Frequent prescription changes in glasses or contact lenses.

These may be signs of other eye problems. If you have any of these symptoms, contact your eye doctor.

Q. How can you recognize a cataract
cataracts through a thorough eye exam, which is also recognized: -?

* visual acuity test – This test measures the eye chart so you can see at various distances <. br />

* extended eye examination: – Drops are placed in your eyes to extend or expand the students. Your doctor uses a special magnifying lens to the retina and optic nerve for signs of damage and other eye problems checked. After the exam, your vision may remain blurred for several hours />

*

to your eye for this test applied
There are different types of cataract surgery: -. *

Phacoemulsification cataract surgery – is emulsified in the internal lens of the eye with an ultrasonic handpiece, and aspirated from the eye. . The incision size for phacoemulsification is approximately 3.0 millimeters wide. The technique uses a small incision phacoemulsification. The tip of the instrument into the eye through this small incision introduced.

Localized high frequency waves are generated by this trick to the star into small pieces and parts, which are then sucked in with the same tip to break in a controlled manner. A thin ‘capsule’ or shell that remains after the cleaning of the entire opaque cataract. Read more ..

* extracapsular surgery – involves removing the affected lens while the majority of the elastic lens capsule intact. This allows the direct implantation of an intraocular lens in the lens capsule. This procedure will usually under local anesthesia on an outpatient basis and patients with cataract surgery and go home the same day

The expression of nuclear cataract. A section of 8 mm to 10 mm is in the eye where the clear front covering of the eye (cornea) meets the white of the eye (sclera) was prepared. An additional small incision is made in the front of the lens capsule and the lens is removed and the remaining material goals. An intraocular lens implantation (IOL) may then be placed within the lens capsule and the incision is closed. Read more ..

* Intracapsular Cataract Surgery: – This technique requires a surgical wound was larger than extracapsular surgery and surgeon removes the entire lens and surrounding capsule together. This technique requires the intraocular lens in a different place to place, in front of the iris. This method is rarely used today, but may still be useful in cases of severe trauma

treatments for cataract surgery are: -.

* Cataract />

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