Recently, massive studies of the treatments to corneal neovascularization have being gone in photodynamic therapy, medicine and operation, et al. and its development has progressed largely.

近年来，国内外对角膜新生血管的治疗在药物治疗、光动力疗法、眼表重建术等方面做了大量的研究，并取得迅猛发展。

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Photodynamic therapy involves the injection of a light-sensitive medicine called verteporfin into a vein in the arm.

BBC: Age-related macular degeneration

Photodynamic acne treatments appeal to patients because they are topical and don't involve introducing medicine to the entire body.

WSJ: As More Adults Get Acne, New Photodynmic Treatments Use Light