Cataract is an eye disease characterized by clouding of the lens, the biological lens of the eye, which interferes with the normal perception of images. As a result of this process, vision gradually worsens, which may eventually lead to complete blindness if not treated in time.
The main symptom of cataract is the gradual decline in vision, and the disease often develops without pain. Initially, the deterioration of vision may be barely noticeable, but over time it progresses. The world around you starts to appear blurry, as if the person is looking through fogged glass or a screen of falling water. Colors become dull, and details become less sharp. Glasses do not help in this case, as the issue is not related to refraction.
An important symptom is that, at the beginning of the disease, vision for nearby objects may even improve. This happens because cataract often causes myopia (nearsightedness), which improves the visibility of objects at a close distance. However, as the disease progresses, the situation worsens, and later, patients begin to suffer from vision loss both near and far.
Other characteristic signs of cataract include:
•
The appearance of halos
around bright light sources, such as street lamps or car headlights, especially at night.
•
Double vision
. This is also often observed under bright light and in low-light conditions.
•
Reduced contrast sensitivity
. Patients with cataract may have difficulty distinguishing shades of similar colors, such as blue and purple.
•
Increased sensitivity to light
. Even ordinary daylight may irritate the eyes.
•
Difficulty reading, sewing, or working with small details
. These difficulties are related to focus and clarity issues.
The symptoms of cataract vary depending on its type and stage. For example, in nuclear cataract (clouding of the central part of the lens), vision for nearby objects may improve at first, but later, a loss of visual acuity occurs. In cortical cataract (clouding at the lens periphery), changes in vision occur more slowly, and the patient may not notice vision deterioration for a long time.
As the disease progresses and the clouding of the lens continues, vision can decline to the point where the person loses the ability to distinguish objects and orient themselves in space. In mature cataract, vision is completely lost, and the pupil takes on a milky-white hue.
Treatment of Cataract
Currently, the only effective treatment for cataract is surgical intervention, as no other methods, such as medication or folk remedies, can restore the transparency of the lens.
Surgical Treatment
The main method of treating cataract is surgery to remove the cloudy lens and replace it with an artificial lens. This surgery is called phacoemulsification. In this method, ultrasound is used to break up the lens, after which the fragments are removed from the eye, and an artificial lens (intraocular lens, IOL) is placed in its place.
Phacoemulsification is a modern and minimally invasive method that preserves vision and ensures a fast recovery period. The operation is performed through a small incision, only 2-3 mm, which minimizes the risk of complications and promotes quick healing. It usually takes 15 to 20 minutes and is performed under local anesthesia, making it accessible even for elderly patients.
Moreover, after such an operation, stitches are not required, as the incision heals on its own. It is important that the postoperative period usually goes without complications, and patients often regain their vision within a few days.
Artificial Lenses
After cataract surgery, an artificial lens is placed in the eye. Today, there are several types of intraocular lenses:
•
Monofocal lenses
, which provide clear vision at one distance (e.g., for distance or near vision).
•
Multifocal lenses
, which provide good vision at different distances and can replace glasses for near and far vision.
•
Astigmatic lenses
, intended for patients with astigmatism.
The choice of lens depends on the patient’s condition and needs, as well as consultation with an ophthalmologist. It is important to note that even after successful cataract lens replacement surgery, patients may need additional glasses for certain tasks, such as reading.
Conclusion
Cataract is a common disease that impairs daily life and can lead to blindness if left untreated. However, with modern treatment methods, including cataract surgery with artificial lens implantation, most patients regain their vision and return to normal life.
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