COMBINED SURGICAL METHOD FOR APPLYING PHOTODYNAMIC TREATMENT TO PREMATURE NEWBORN RETINOPATHY Russian patent published in 2005 - IPC

FIELD: medicine.

SUBSTANCE: method involves transpupillarily determining size and location of avascular zones and cushion. Conjunctiva and Tenon's capsule incision is carried out in perpendicular to limb 2-3 mm far from it and pocket is formed with spatula in perpendicular to limb in avascular zones and cushion projection area using laser probe set in the formed pocket. Preliminary trans-scleral laser irradiation is applied to the avascular zones and cushion projection area with pulsating and continuous non-collimated beam of laser radiation of low intensity and wavelength of 800-950 nm having mean power of 5-20 mW at probe end during 5-10 min. Photosensibilizer agent is introduced into one of cubital veins and avascular zones and cushion photosensibilizer agent saturation degree is determined by applying photodynamic fluorescent diagnosis method. Maximum avascular zones and cushion saturation level being achieved, trans-scleral scanning laser radiation is applied to the avascular zones and cushion projection area with wavelength of 661-666 nm during 30-90 s with radiation dose being equal to 20-60 J/cm². The operation is finished without placing sutures over conjunctiva.

EFFECT: enhanced effectiveness of treatment.

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