Cataract is clouding of the lens of the eye. of various causes — trauma; drug-induced issues such as local and systemic use of steroids; and congenital, developmental and systemic conditions such as diabetes, and arthritis—aging is the most common cause. cataract formation, Dr Sanjeev Taneja, Ophthalmologist, Apollo Spectra Delhi, Karol Bagh said, the symptoms of cataract are blurred and blurred vision, strong sunlight, sensitivity to lamps or headlights, double vision, poor night vision and change in the way you see colors .
Surgery for cataracts involves removing the natural lens of the eye that has become foggy, “The lens can be replaced with an artificial lens called an intraocular lens implant (IOL), which is placed in a position close to the normal anatomical position of the natural lens. Wearing no glasses or contact lenses to compensate for the missing lens. Maybe,” Dr Taneja said.
“There are different types of IOLs available with the aim of reducing your reliance on glasses after surgery. IOLs can be made with different focusing strengths, such as prescription glasses or contact lenses. Before having surgery, consult with your doctor. Review the pros and cons of each type of replacement Lens, Your doctor can help you choose the type that works best for you based on your age, visual needs and other coexisting eye conditions,” explains Dr Taneja.
There are a few types of IOLs to consider.
This type of intraocular lens is designed for near or far vision. If you have this type of IOL placed in your eye, you may not need glasses for a particular working distance. “For example, it is common for IOLs to be chosen to provide better distance vision myopia, Then glasses are used for sharp near vision and no glasses or minimum glasses are required for distance,” Dr Taneja noted.
Multifocal Trifocal IOL
This type of intraocular lens design provides correction for both near and far vision by having rings for different focusing powers and both near and far objects can be in focus at the same time. “Your brain must learn to select the visual information needed to image objects that are near or far away, so multifocal IOLs may require some adjustments. A person can adjust to multifocal IOLs better if they have both. be placed in the eyes. Lens Not an option for some people. It can be considered a premium lens, so it may cost more than a monofocal IOL,” Dr Taneja said.
Extended depth of focus Lens There are lenses that provide clear vision for a distance, and at the same time almost clear near vision, better than monofocal, but less than multifocal/trifocal. “One may still need reading glasses, but less than what is required with monofocals. They score on multifocal, as they don’t give off any of the halo glare, as they lack separate focusing rings,” Dr Taneja noted.
This is a type of monofocal IOL that helps correct astigmatism. This can be considered a premium lens, so it may cost more than a monofocal IOL.
According to Taneja, most people choose distance-vision IOLs instead of near-vision IOLs, and use glasses for sharp near vision. “But some people choose IOLs that provide better near vision for reading, and they use glasses for far vision. If you are having lenses replaced in both eyes, your doctor may also recommend monovision, With monovision, an IOL in one eye provides better near vision, and an IOL that gives better distance vision is implanted in the other eye. Many people who try monovision can adjust to it, but it’s not an option for everyone,” Dr. Taneja said.
He noted that one drawback of monovision is that each eye must work “more independently”.
“This can cause problems with depth perception. You may have to adjust your gaze more often to allow one eye or the other to see properly. So like any other condition, the IOL too Can be customized according to the needs of the patient and can be treated under the guidance of ophthalmologists. Monovision though a practical concept is not very popular. Therefore proper counseling needs to be done before proceeding further,” advised Dr Taneja.
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