What is Laser Peripheral Iridotomy?

​​

Laser Peripheral Iridotomy (PI) is a laser procedure performed to treat or prevent narrow-angle or angle closure glaucoma (ACG). 
Glaucoma occurs when the normal fluid drainage in the eye is blocked, causing a buildup of pressure that can damage the optic nerve and affect vision.

 

During PI a laser is used to create a tiny opening in the iris (the coloured part of the eye). 
This allows fluid to flow more freely between the front and back of the eye, helping reduce the risk of sudden angle closure.​​

​

​

​

What happens on the day of your treatment?

​​

• First, you will meet with one of the clinical team who will test your vision and administer eye drops to make your pupil smaller. Numbing drops will also be used to keep your eye comfortable.

• You will sit at a the laser machine similar to a regular eye exam. A special contact lens is used to help focus the laser.

• Your eye specialist then performs the laser procedure, which only takes a few minutes. Most people feel a slight pinch or discomfort, but no sedation is required.

​​

​

​

What can you expect after Laser Peripheral Iridotomy?

​​

After the procedure it is normal to experience some mild and temporary effects, including:

 

• Blurry or hazy vision for several hours as your eye adjusts.

• Mild discomfort or a light stinging sensation.

• Sensitivity to light for a day or two.

• A mild headache or eye ache caused by the pupil being constricted; this usually settles within a few hours and can be relieved with simple pain relief.

• Redness or slight irritation around the treated eye.

Your eye specialist may prescribe anti-inflammatory eye drops to reduce swelling and irritation.
Most people notice improvement quickly and can return to normal activities soon after.

Be sure to attend your follow-up appointment so your eye pressure and healing can be checked.

​​

​

 

Are there any risks?

​​

Laser Peripheral Iridotomy is a very safe and effective procedure.
However as with any eye treatment, there are small risks, including:

 

•Mild bleeding or inflammation inside the eye

•Temporary blurred vision or glare

•Short term rise in eye pressure

These effects are usually minor and resolve quickly. Serious or long-term complications are extremely rare.