Practice diagnosis and treatment of cataracts

2021-02-05 12:00 AM

Cataracts usually appear in both eyes but are uneven, usually a more advanced eye requiring treatment first.

Cataracts are a common eye disease among the elderly, often occurring between the ages of 50 and older. About 15% of people between the ages of 65 and 75 have it, and the older the age, the higher the incidence.


The disease progresses because protein fibres in the lens are altered, similar to changes in egg whites when cooked. This transformation causes the lens to lose its transparency, making light not as easy to pass through as before. Even so, there is still some light that does pass through. Depending on how well light can still pass through the lens, the patient's vision may decrease, partially or completely, decrease. Until the ability to recognize images, however, the patient can still discern light from the darkness. So far, the specific cause of cataracts is unknown, so it is often considered one of the natural processes of old age.


Absolutely cataracts are not accompanied by symptoms of infection or eye pain. So the patient feels nothing but a diminished vision. However, due to the slow progression of the disease, the early stage is often undetected unless the patient complies with routine eye exams and optometry. Most cases of cataract are detected when vision has decreased a lot and really makes it difficult for the patient in daily activities.

For a definitive diagnosis, the eye can be observed through an eyepiece placed at a distance of 20cm. If the eye is cataract, a red reflective dot will be found in the centre of the pupil (the pupil) that is obscured by dark lines running across the pupil. The fundus exam is often difficult due to obstructed vision. In the majority of cases, it is also possible to check the extent of a patient's vision loss.

Cataracts usually appear in both eyes but are uneven, usually a more advanced eye requiring treatment first.


The only solution available today is the surgical removal of the cataract. Then either replace it with artificial lenses, or have the patient wear glasses, or put contact lenses on. The method of replacement with artificial lenses is currently the most used. However, in some cases, due to the inability to insert the lens, the methods of wearing glasses or contact lenses must still be applied. cells in the lens, or vitreous, that make the patient see as if there are one or more dark spots suspended in the air. Therefore, black spots can be seen even when they turn around.

Therefore, flying flies are not a disease, but a sign of a number of different eye problems. The mechanism of image recognition of the eye depends on 5 transparent parts: cornea, aqueous humour, lens, vitreous fluid and retina. On the way to the macular (macular) in the eye, if the light is blocked by any obstacle, such as degeneration of the lens, vitreous fluid ... the image is received by the eye. it will look like there is a black object in front of you.