What are cataracts?
Cataracts are a very common condition where the natural crystalline lens of the eye becomes cloudy over time. This cloudiness prevents light from properly reaching the retina, causing decreased vision. It is the main cause of vision impairment and vision loss around the world.
Symptoms
Cataracts develop over time and often occur in both eyes, though each eye may be affected differently.
Symptoms of cataracts may include:
Blurry or foggy vision
Double vision
Trouble seeing in low or very bright lighting
Bright light sources may be dazzling or uncomfortable to look at
Colours appear faded with a yellow or brownish tinge
Common causes
Cataracts usually develop as you age, but there are also other factors that can increase the risk of developing cataracts, including:
Smoking
Diabetes
Heavy alcohol consumption
Exposure to UV rays, especially without protective eyewear like sunglasses
Using certain types of medication over a certain period of time
Previous eye injury or surgery
Treatment
If you have a mild form of cataracts, wearing glasses with different strengths or brighter reading lights may help with blurred vision. However, most cataracts do worsen over time, which will require treatment.
Treatment for cataracts includes surgery, where your natural lens is removed and replaced with an artificial lens called an intraocular lens (IOL) by an ophthalmologist (eye surgeon). If your optometrist detects cataracts during an eye exam, they will refer you to an ophthalmologist to further assess the cataracts and decide on a treatment plan.
Cataracts are just one of the eye conditions that can be detected during a comprehensive eye exam, which is why they’re so important.
Cataracts surgery
What does cataract surgery involve?
An ophthalmologist will determine if you’re a good candidate for cataract surgery. Most cataract operations are performed using a local anesthetic. This means that you’ll be awake and may sense touch or cool fluid on your eye, but you shouldn’t feel any pain.
During the procedure you may see some lights and shadows while the ophthalmologist is working. They will make a tiny incision to remove the cataract and will normally replace it with an acrylic lens so that you can see clearly after the eye has fully healed. The surgery typically takes around 15‑20 minutes and won’t usually require sutures. After the surgery, you’ll need someone to drive you home as you won’t be able to drive until you’ve been cleared by your surgeon during your post‑operative appointment.
What are the risks of cataract surgery?
Cataract surgery is generally a very successful procedure, and the majority of patients are happy with the results.
But as with all surgery, there are risks involved and you shouldn’t have the operation unless you feel it is right for you.
Your ophthalmologist will walk you through all the benefits and risks for your case and also provide you with a management plan after surgery to make sure your eyes heal properly.
Next steps
We want to help you see clearly and keep your eyes healthy for as long as possible. If your optometrist detects any signs of an eye condition during your comprehensive eye exam, they will determine an appropriate management plan that suits your needs.
Book an eye examGet answers to your questions
If you have had a cataract removed from one eye, it is likely that you will need the same treatment for the other eye at some point in the future.
If it is not interfering with your daily life, it’s safe to leave a cataract in your eye. It doesn’t become more difficult to remove if you wait before having surgery, but you won’t be able to see as well as the cataract worsens.
The cataract does not have to become ‘ripe’ for you to have the operation. Surgery can be done as soon as the cataract is interfering with your daily life, which can be determined with your eyecare professional’s help.
To try to prevent or slow down the formation or progression of cataracts, it’s recommended to avoid or stop smoking and always make sure to wear 100% UV protective eyewear.
After a short period of time, likely days to a few weeks, your vision should stabilize after cataract surgery. Most patients will need to wear corrective eyewear (glasses) post‑surgery, to see more clearly at distance, near, or both.
If you wore glasses before the operation, you will likely notice that they may not be providing clear vision as your prescription generally changes after surgery. So, it’s recommended that you see your optometrist 6‑8 weeks after the operation for an updated eye exam.
You may find that it takes a few weeks to adapt to your vision with new glasses after cataract surgery, but this is perfectly normal while your brain gets used to a new prescription.
After some months or years, some people may notice that their vision becomes cloudy or misty again in the eye where the cataract has been removed. This is not the cataract returning, but rather cloudiness forming in the capsule that contains the replacement lens. This can be removed through a quick procedure involving a painless laser treatment. If you think this might be happening to you, book an appointment to see your optometrist.
You can drive when you have cataracts, provided you still meet the legally required vision standards for driving, as can be determined by your optometrist.
Noticed a change in your eyesight?
If you have any concerns about your eye health, contact or visit your local optometrist immediately – even if you do not have an appointment.
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