SLT or selective laser trabeculoplasty is treatment for glaucoma using a specialty laser to reduce eye pressure by stimulating the drain of the eye to improve its function.
Laser iridotomy is a procedure done to widen the angle or drain inside the eyeball when it is narrow enough to be at risk for closure. When the drain closes, angle closure glaucoma develops. Angle closure glaucoma is a condition which causes high pressure within the eyeball which can cause loss of vision. This disease can develop gradually over time in patients with narrow angles, but can also develop suddenly, causing a sudden onset painful and vision threatening glaucoma. Ophthalmologists can usually identify angles which are narrow and at risk for closure and treat prophylactically to widen the angle or drain before an attack of angle closure occurs. The iridotomy procedure results in the creation of a small opening, a bypass channel in the periphery of your iris to alter the flow of fluid within your eyeball usually widening a narrow angle or drain.
Laser posterior capsulotomy is treatment to cut the film which develops behind the lens implant months or years after cataract surgery in about one third of cases.