The ability to see is provided by complicated cooperated work of eyes and brain. Disturbances in any part of the visual mechanism may cause vision problems. Nowadays people suffer from more and more eye diseases and disorders due to persistently growing impact on the eyes. Some of them are caused by age-related changes, while others by infections or traumas. Most frequent clinical cases include conjunctivitis, nearsightedness (myopia), farsightedness, cataracts, astigmatism, color blindness and others.
Conjunctivitis is the most widely spread eye disease: every third person in the world has ever suffered from this illness. It is a contagious infection caused by bacteria, viruses or chlamydia. The infection can get into the body when touching the eyes with dirty hands, swimming in dirty water, or contacting an infected person. The disease is characterized by irritation, redness and itching. The eyelashes of the infected person get «glued together» during sleep due to excessive eye discharge and suppuration.
Conjunctivitis can be allergy-related. It this case, the disease does not spread to other people, but causes red eyes and lacrimation in the patient.
Nearsightedness is an eye disorder, when a person can’t clearly distinguish objects in the distance. In healthy people the image of distant objects focuses on the eye retina, whereas nearsightedness moves the focus in front of the retina.
If nearsightedness is congenial, it starts to develop in children aged 10-16, during the growth of the eye ball. Over time, nearsightedness can improve or get worse. It depends on the anatomy of the eye, family background, and external factors (stress, excessive impact, diseases, bad environment, etc.).
The condition, when a person does not see close objects clearly, is called farsightedness, or hyperopia. The symptoms of the disease are more pronounced at night, when the eyes are tired. Farsightedness causes discomfort when reading or working in front of the computer. This disorder is age-related: almost everybody at some point starts to suffer from farsightedness. The disease starts to develop in people aged 40 and older.
The successful treatment for the eye disorders depends on the timely diagnosis of the disease, its causes and appropriate treatment method.