Patients with porphyria are highly sensitive to which wavelength :
Porphyrin are excited by visible light with a wavelength between 400 and 410 nm and emit an intense red fluorescence. The released energy reacts with oxygen to produce free radicals and singlet oxygen that damages tissues Mc porphyria - porphyria cutaneatarda (if- Red urine - D/D - myoglobinuria )
290-320 nm
400-420 nm
320-400 nm
250-290 nm
JIPMER 2018