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Cataract
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Cataract

In the human eye, the eye lens is located behind the pupil. Its function is to focus light rays on the retina so that the images one sees are clear. The optic nerve then transmits these images to the brain. With cataract, the eye lens becomes opaque and images become indistinct as if one is looking through a waterfall, hence the name “cataract”. A progressive drop in vision follows, often accompanied by discomfort caused by light (photophobia).

One eye may be affected more severely than the other.

What are the symptoms?

A patient suffering from cataract has the impression that he is losing his eyesight: images become blurred, as if one was looking through a dirty glass.

Other symptoms are photophobia, double vision and perceiving halos around light sources.

Who is affected?

A patient suffering from cataract is generally over 50 years of age.

Cataract affects more than one in five people from 65 years of age, more than one in three from 75 years of age and almost two in three after 85 years of age.

In rare cases, children may suffer from cataract at birth.

What are the causes?

The aging process is the most frequent cause of cataract. However, in 5% of cases, cataract may have another cause: metabolism problems such as diabetes, eye diseases such as glaucoma, inflammatory eye diseases, frequent use of certain types of medicines like cortisone, heredity, traumas such as a blow on the eyes or radiation.

What is the evolution?

Cataract does not always development rapidly. The time varies from a few months to several years.

At the start, it is possible to correct the changes in vision by adjusting the patient’s glasses. In certain cases, an improvement is noted in reading while long distance vision deteriorates. In other cases, double vision sets in.

How is it diagnosed?

Diagnosis is established by an ophthalmologist after in-depth examination of the eye, using a bio-microscope or slit lamp and other diagnostic equipment. The purpose of this in-depth examination is to make the cataract diagnosis with certainty and rule out any other diseases.

How can it be prevented?

No local or general medication can prevent or cure cataract.

how to treat it?

    Introduction

    Treatment by refractive surgery

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