Photocoagulation Laser
Argon Photocoagulation Laser
What exactly is argon photocoagulation laser?
Argon photocoagulation laser is a modern technique, used to treat pathological conditions of the retina, such as retinal rupture – tear, retinal hemorrhage, diabetic retinopathy, and macular edema. During laser photocoagulation method, an ophthalmologist uses a special laser system to deliver precise laser shots to the retina. To perform this technique, mydriatic drops are required (to dilate the pupil, providing microscopic access to the posterior part of the eye). A laser photocoagulation process typically takes 15 to 30 minutes.
What are the types of argon laser photocoagulation?
There are three types of photocoagulation laser treatments:
Focal photocoagulation: This is commonly used for patients with diabetic retinopathy, diabetic macular edema, or retinal tear. Αrgon photocoagulation laser in fact «burns» and blocks – seals areas of leakage
Grid photocoagulation: This is typically applied to patients with macular edema, caused by diabetes or vascular occlusions
Panretinal photocoagulation: This type is often used in patients with proliferative diabetic retinopathy. The goal of the technique here is to reduce bleeding and prevent the formation of new blood vessels (neovessels) in ischemic areas of the retina
In all the above cases, it is advisable to first perform diagnostic imaging tests like fluorescein angiography (FFA) and optical coherence tomography (OCT) to precisely identify any damage or alterations in the retinal structures.
How is laser photocoagulation performed?
The process includes the following steps:
The patient’s pupil is dilated (with special mydriatic drops). Mydriasis is important essential, especially for treating peripheral retinal tears
Local anesthetic drops are applied.
The patient sits in front of a slit lamp, which is connected to the aiming system of a thermal argon photocoagulation laser
The ophthalmologist adjusts the laser’s energy – level, the size of the laser spot (or pattern – grid), and the frequency of the shots, depending on the assessment of the damage or problem
The patient is instructed to fix his / her gaze on a light to ensure the treatment is properly performed
A laser photocoagulation procedure is painless. After the treatment, the patient will follow a prescribed treatment plan recommended by the physician.
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