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How does photodynamic therapy (PDT) treat wet macular degeneration?

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Photodynamic therapy (PDT) uses a different, non-heat-generating laser to treat abnormal blood vessels, but it is not a common treatment. Visudyne is injected into the patient's arm and flows through the vessels in the eye. Upon exposure to the laser, a chemical reaction occurs that seals off the leaky vessels. Since the dye is light sensitive, you must stay out of the sun or bright light for several days until the dye has passed from your system. Laser photocoagulation must be done before the abnormal blood vessels cause irreversible damage to the retina. More blood vessels could grow later on, so people who undergo this treatment also need to continue with regular follow-up appointments.

SOURCES: 

News release, FDA. 

James B. , Blackwell Publishing, 2003.  Lecture Notes on Ophthalmology

Macular Degeneration Partnership. 

Pfizer: “Macugen Description.” 

American Academy of Ophthalmology: "Preferred Practice Pattern, Age Related Macular Degeneration." 

National Institutes of Health: "NIH study provides clarity on supplements for protection against blinding eye disease."

Reviewed by Alan Kozarsky on July 13, 2017

SOURCES: 

News release, FDA. 

James B. , Blackwell Publishing, 2003.  Lecture Notes on Ophthalmology

Macular Degeneration Partnership. 

Pfizer: “Macugen Description.” 

American Academy of Ophthalmology: "Preferred Practice Pattern, Age Related Macular Degeneration." 

National Institutes of Health: "NIH study provides clarity on supplements for protection against blinding eye disease."

Reviewed by Alan Kozarsky on July 13, 2017

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How do vitamins treat wet macular degeneration?

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