Hanoi After a year of wearing contact lenses, the 25-year-old man felt his eyes were swollen, his vision was blurred, and he lost his vision completely. The doctor diagnosed him with blindness due to corneal ulcers.
The boy has been nearsighted since he was 6 years old and started using daytime contact lenses with a prescription of -4 diopters. Since then, he has enjoyed wearing contact lenses but has only used them regularly for the past year.
The patient said that his previous work was mainly in the office, so removing and cleaning his lenses was easy. However, since last summer, he has had to go to construction sites more often, so wearing contact lenses has become more inconvenient. Once, while inserting a contact lens into his eye, the lens fell to the ground, so he picked it up and put it back on because he did not bring a spare pair of glasses. There were even days when he did not have time to remove the lens to clean his eyes when he got home, so the patient wore contact lenses for 24 hours.
Recently, the young man saw scratches, bulging eyes, and blurred vision, so he went to Hanoi Eye Hospital 2 for examination. Here, the doctor concluded that he had corneal ulcers leading to loss of vision. First, he needed treatment to avoid affecting the eye structure, then corneal transplant surgery to regain vision.
Risk of blindness when wearing contact lenses incorrectly. Photo: Freepik
On July 16, Dr. Hoang Thanh Nga, Hanoi Eye Hospital 2, said that contact lenses bring many conveniences if worn correctly, using the correct method and cleaning. However, if patients wear them incorrectly, for example, if the surface of the eyeball is infected, wearing lenses overnight, or using disposable lenses multiple times, not soaking and washing lenses with specialized water, etc., they can easily lead to infection. Contact lenses will come into direct contact with the surface of the cornea, damaging the outer epithelial layer. When the protective barrier is lost, bacteria can easily enter and cause inflammation.
"Even if cured, it will still leave scars, and in severe cases, it will cause blindness. If the patient cannot control it with medication and does not have the conditions for a corneal transplant, the most severe case is having to remove the eye," said Dr. Nga.
According to Ms. Nga, this patient works at a dusty construction site. When wearing contact lenses, tears cannot wash away the dirt, so bacteria can easily enter. In addition, the habit of wearing lenses overnight increases the risk of damage to the corneal epithelium. Immediately after seeing the scratch, the patient did not go to the doctor immediately, which gradually led to vision loss.
Currently, many patients arbitrarily buy contact lenses floating outside, do not wear glasses according to the instructions and prescriptions of the doctor or manufacturer, especially the type of photochromic contact lenses that help the pupils dilate and become more beautiful, causing many complications for the eyes. When using contact lenses, you should consult a doctor.
People should not overuse soft contact lenses. Do not wear lenses for more than 12 hours a day, do not wear lenses when sleeping or bathing. Use specialized water to clean lenses. Do not share lenses with others. Do not reuse lenses many times.
Le Nga
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