Do you need to have a lens transplant for cataracts? Let's learn everything about these lenses (Intraocular Lenses - IOLs) in a simple way!

Do you have a grandmother or grandfather at home who complains that their eyes are blurry and everything is blurry? Or do you yourself find it difficult to read the newspaper or look at your phone as you get older? The main reason for this can be "cataracts". So today we are going to talk about a small but incredibly important thing that is inserted into our eyes during surgery. That is the intraocular lens, or as we medically call it, Intraocular Lenses, or IOLs for short.

What are these IOLs? Simply put...

Think of your eye as a good camera. This camera has a natural lens. The function of this lens is to focus the light coming from the things we see and provide a clear image on the retina inside the eye. Over time, especially as we age, this natural lens gradually begins to cloud and become milky. That's what we call a "cataract."

Now imagine what happens if the camera lens gets dirty, dusty, scratched, and blurry? The photos you take aren't clear, right? That's what happens when you get a cataract. So, what you do with a surgery is to remove the cloudy natural lens and replace it with a clear, artificial lens that can be left in the eye forever . That artificial lens is what we call an IOL .

These IOL lenses can not only correct cataracts, but also many other vision problems that you can correct with glasses or contact lenses.

• Myopia: Seeing things up close clearly, but seeing things far away as blurry.
• Nearsightedness (Hyperopia): Seeing clearly at a distance, but having difficulty reading close-up objects, especially books.
• Presbyopia: A condition that affects many people over the age of 40, requiring glasses for near vision.
• Astigmatism: A condition in which light does not focus in one place, resulting in distorted vision, due to a slight change in the shape of the eye.

Once you have these IOL lenses in your eye, they last a lifetime. So you can greatly reduce your dependence on glasses.

Who needs these IOL lenses?

Two main groups of people benefit greatly from these IOL lenses.

1. For those with cataracts: If the cataract has grown to the point where it is interfering with your vision, it will need to be surgically removed. After removal, an IOL lens will almost certainly need to be implanted in the eye. Otherwise, vision cannot be restored. This is why most IOL implants are performed in Sri Lanka.

2. For people with vision impairments but not suitable for surgeries like LASIK: Some people have vision impairments that require the use of glasses, but they may not be able to do things like laser treatment (LASIK). In such cases, a surgery called Refractive Lens Exchange (IOL) can be performed, which involves removing the natural lens and implanting an IOL.

What are the types of IOL lenses? Which one is right for you?

This is the problem that many people have. There are many types of IOLs. Each has its advantages and disadvantages. With some lenses, you may still need glasses for things like reading a book or newspaper. Some "premium" lenses can greatly reduce your reliance on glasses, but they can also cause side effects like glare and halos around headlights when driving at night.

Therefore, it is very important to talk to your ophthalmologist and choose the lens that best suits your lifestyle, needs, and preferences.

To make it easier to understand, let's look at the main types of lenses in a table.

Other special lens types

• Light-adjustable lenses (LALs): These are a little different. After surgery, your doctor can use a series of special ultraviolet (UV) light treatments to subtly change the power of these lenses to give you the vision you want. These are also monofocal, so you will need glasses for near vision.
• Phakic Lenses: These are usually used in young people. The natural lens is not removed. Instead, this lens is implanted in front of the natural lens. They are used to correct nearsightedness in people who are not suitable for laser treatment.

Think before you talk to your doctor.

Before you go see your eye surgeon, ask yourself these questions. Then you will have a clear idea of ​​what you want.

• Do I sometimes like to wear glasses? If so, for what purposes? (e.g., just reading books? Or all the time?)
• What kind of vision do I need for my job? Do I look at a computer all day? So, is it okay for me to wear glasses for that job?
• Do I often drive at night? If so, can I get used to seeing glowing rings around the headlights?
• What are my hobbies? Am I someone who does delicate work, like sewing or drawing? Or am I someone who plays sports or enjoys being outdoors? To what extent will glasses interfere with these activities?
• What is my budget for the surgery? In a government hospital, monofocal lenses are usually provided free of charge. However, you may have to pay extra for special lenses like multifocals. In a private hospital, prices vary greatly depending on the type of lens. Be aware of that in advance.

What are the possible complications associated with IOL implantation?

IOL implantation is often a very successful surgery. However, as with any surgery, there are some rare complications that can occur. These are nothing to be afraid of, but it's good to be aware of them.

• Posterior Capsular Opacification: This is also called "secondary cataract." Months or years after surgery, a thin layer of opacity forms behind your IOL. This is very common. This can cause your vision to become slightly blurry again. This is very easy to treat. Usually, the layer can be removed in the clinic in a few minutes using a laser beam, clearing your vision.
• IOL dislocation: The implanted lens moves out of place. This is a very rare occurrence. The risk is slightly higher in people with certain eye conditions or those who have suffered a severe blow to the eye.
• UGH syndrome (Uveitis-glaucoma-hyphema syndrome): A very rare condition caused by the IOL lens hitting parts of the eye, such as the iris.
• IOL opacification: Clouding of the artificial lens itself. This is very rare with modern lenses.
• Refractive Surprise: After surgery, your vision may not be as clear as you and your doctor had hoped. In this case, your doctor will explain your options, such as accepting the vision as it is, or using glasses, having laser treatment, or having an IOL replaced.

If you have any concerns about any of these, talk to your doctor before the surgery. He or she will explain the risks to you based on your medical history and eye health.