METHOD FOR PHOTODYNAMIC THERAPY OF NEWLY FORMED CORNEAL VESSELS Russian patent published in 2006 - IPC A61F9/08 A61N5/67 

FIELD: medicine, ophthalmology.

SUBSTANCE: it is necessary to conduct scanning laser impulse irradiation of newly formed corneal vessels with scattering light bundle for about 5-10 min at applying the following parameters: wave length 890-900 nm, irradiation power 1-5 W in impulse, the frequency of impulses 140-160 Hz and impulse duration 50-300 nsec. Then it is necessary to introduce 0.1-1%-aqueous solution of photosensitizer of khlorin type taken out of the group of photolon, radakhlorin or photoditasin, at the dosage of about 0.8-1.1 mg/kg. Then one should perform exposition of newly formed corneal vessels without light access for about 15-20 min. Then it is necessary to apply the gel based upon hyaluronic acid viscoelastic onto corneal surface, this gel should be chosen out of the group of chealon, viscoate or hyatulon and, moreover, it is important to locate a laser light-scattering device upon corneal surface. Laser irradiation of newly formed corneal vessels should be fulfilled with scattered laser radiation at the density of laser radiation energy being 30-60 J/sq. cm. The innovation provides high efficiency in destructing newly formed corneal vessels followed by technique of optico-reconstructive keratoplasty.

EFFECT: higher efficiency of photodynamic therapy.

1 cl, 2 ex