Ophthalmological assessment of cannabis-induced persisting perception disorder: Is there a direct retinal effect?

@article{Zobor2015OphthalmologicalAO,
  title={Ophthalmological assessment of cannabis-induced persisting perception disorder: Is there a direct retinal effect?},
  author={Ditta Zobor and Torsten Strasser and Gergely Zobor and Franziska Schober and Andr{\'e} Messias and Olaf Strau{\ss} and Anil Batra and Eberhart Zrenner},
  journal={Documenta Ophthalmologica},
  year={2015},
  volume={130},
  pages={121-130}
}
PurposeCannabis is a psychotomimetic agent that induces impairment of sensory perception. We present detailed clinical and electrophysiological data of patients with hallucinogen persisting perception disorder (HPPD) after marijuana consumption.MethodsA HPPD patient and four heavy cannabis smokers with no visual disturbances (controls) underwent complete ophthalmological examination including psychophysical tests (visual acuity, color vision, visual field, and dark adaptation) and detailed… 
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