[foh-toh-koh-ag-yuh-ley-shuh n] /ˌfoʊ toʊ koʊˌæg yəˈleɪ ʃən/

a surgical technique using an intense beam of light from a laser or a xenon-arc bulb to seal blood vessels or coagulate tissue, used primarily in ophthalmology to repair detached retinas or to treat certain kinds of retinopathy.

photocoagulation pho·to·co·ag·u·la·tion (fō’tō-kō-āg’yə-lā’shən)
Surgical coagulation of tissue by means of intense light energy, such as a laser, performed to destroy abnormal tissues or to form adhesive scars, especially in ophthalmology.
pho’to·co·ag’u·late’ v.


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