This is an automatically translated article.
The lens is a transparent disc on the inside of the eye that focuses light rays that enter the retina to form a sharp, clear image, like the lens of a camera focusing images on film. The lens functions as a 20D power converging lens located behind the iris and participates in the eye's accommodation process.1. What is cataract (dry cataract)?
It is a opacity of the lens. This opacity prevents light rays from passing through, resulting in the retina not receiving an image and the patient's vision impaired leading to blindness.Cataracts are not cancer or abnormal tumors in the eye.
This disease is caused by physical changes in the composition of the lens that cause cloudiness. This disease can be easily detected by the Eye Doctor with specialized tools.
2. What are the symptoms of cataracts?
Blurred vision, impaired vision, difficulty seeing, flashes of light, night blindness, dimmer in sunlight than in shady places. Poor vision in surrounding bright areas Look at an object in two or three Change eyeglasses often.
Trên 80% người mắc bệnh đục thủy tinh thể là người có độ tuổi trên 50
3. What is the cause of cataracts?
The main causes are related to old age, diabetes, high blood pressure, myopia, trauma. More than 80% of people with cataracts are over the age of 50Cataracts can be classified:
Aged cataracts are the most common cause and affect adults of this age. age over 50 Diabetic cataracts affect people with diabetes and cause vision fluctuations. Traumatic cataracts are caused by damage to the eye that directly or indirectly damages the lens. Cataracts caused by myopia, cataracts after other eye diseases: glaucoma, uveitis, retinal damage... Congenital cataracts are present at birth.
4. How is cataract treated?
Medical: temporary medicine for the first timeEffective treatment by surgical method: The cloudy eye is removed and replaced with an artificial lens.
What treatment is available?
Surgery is the only method that is effective in curing cataracts. Cataract surgery has a high success rate with more than 90% of patients recovering their vision well with today's advanced techniques such as phaco.
This result is due to advances in surgical technology and effective infection prevention.
The majority of cataract surgeries are done the same day without hospitalisation. Recovery is very rapid and many patients are visible for a short time after surgery.
How is cataract surgery?
Surgery is performed when vision is reduced, affecting daily activities. The most advanced technique is phaco surgery, which emulsifies the lens with a machine, then sucks out and replaces the artificial lens. Eyes become bright and the patient does not need to wear glasses with a height above 10D like the previous conventional cataract surgery method.
5. How to prevent cataracts?
There is no known treatment that prevents or slows the progression of cataracts. Cataracts are a common cause of poor vision in the elderly. It is a curable form of blindness. It is important that you have regular eye exams to distinguish them from other causes of blindness that require urgent treatment.Remember, early detection can prevent permanent blindness.
According to medinet.hochiminhcity.gov.vn
