This is a type of laser used in patients with glaucoma where other types of treatment have failed or would be of little use or to avoid or delay the need for more invasive surgery.
If you have healthy eyes, the fluid in your eye (aqueous humour) flows through your pupil into the front of your eye. It then drains away through drainage channels inside the eye called the trabecular meshwork. These drainage channels are situated in the angle of the eye, which is where cornea (clear front layer of the eye) and iris (coloured part of the eye) meet.
However, in some eyes these drainage channels do not work properly, so your eye pressure increases. This increase in pressure may injure your optic nerve (the nerve that carries information from your eye to your brain) and impair your vision. This is called glaucoma.
In this trabeculoplasty procedure, a laser beam is applied to the drainage channels to unclog them. This means the aqueous humour flows through the channels better, reducing the pressure in your eye.