Cataract surgeries are based on replacing the clouded intraocular lens. During the surgery, the patient can regain clear vision thanks to the lenses placed
in the patient’s eye.
Cataract surgeries are based on replacing the clouded intraocular lens. During the surgery, the patient can regain clear vision thanks to the lenses placed in the patient’s eye. So which lens is suitable for which patient, which criteria are important in lens selection? Batıgöz Health Group Çankaya branch Eye Health and Diseases Specialist Assoc. Dr. Uğur Ünsal answered the questions about cataract surgery.
The Only Treatment Surgery
Cataract is the haze and blurring of the natural intraocular lens inside the eye. Cataracts cannot be treated with drops or any other method, the only treatment is surgery. Cataract surgery is the removal of the clouded intraocular lens and the placement of a new intraocular lens. The surgery is usually performed with topical drop anesthesia applied to the patient’s eyes, and takes an average of five to ten minutes.
In infants, congenital cataracts can lead to reduced vision and loss of vision. Eye examination of babies in the first 12 weeks of life is important in this regard. Cataract surgery is also performed in infants and children and general anesthesia is preferred. There are three groups of lenses used in cataract surgery. The first group is the monofocal lens. In this lens, the rays coming into the patient’s eye fall on the back of the eye from a single focus. The patient does not need glasses when looking far away. But he/she needs to use near glasses. The second group of lenses are Edof lenses, which have an extended focus that allows both distance and middle distance vision. While this type of lens provides the patient with distance, intermediate and some near vision, some patients may need a low-numbered near lens. A third group of lenses are trifocal lenses, popularly known as smart lenses, which provide vision at far, intermediate and near distances. These lenses provide satisfactory vision at distance, near and intermediate distances.
Patient Needs are Important
If the patient also has astigmatism, it would be more appropriate to use astigmatized models of these lenses. Just as we do not buy a normal pair of glasses when we buy glasses or undergo an eyeglass examination, but if we have astigmatism, we use astigmatized lenses, this option is also available in lenses today. In other words, if a monofocal lens is found suitable for the patient, but the patient also has astigmatism, it is beneficial to prefer a monofocal lens with astigmatism or a trifocal lens with astigmatism, and if astigmatism is present, it is beneficial to prefer a trifocal lens with astigmatism. A monofocal or monofocal astigmatic lens can be preferred for all patients who will undergo cataract surgery, but it is beneficial to choose trifocal or trifocal astigmatic intraocular lenses only for suitable patients.
Patients with retinal problems at the back of the eye, severe eye pressure or corneal problems at the front of the eye should not be implanted with smart lenses or trifocal intraocular lenses. The most important criteria affecting cataract surgery are the technological infrastructure used during surgery, the needs of the patient and the experience of the physician. When these criteria come together, much better results will be obtained. When a personalized lens is preferred after detailed eye examinations and modern medical facilities are used during surgery, both patient happiness and physician happiness will increase.
January 2025