The aim of this study is to determine whether 9-cis-beta Caroten rich D. Brdawiil extract is effective in the treatment of retinitis pigmentosa in adolescent patients.
Written informed consent to participate in the study.
Adolescent 12-18 years old.
Electroretinogram (ERG) responses compatible with the diagnosis of Retinitis Pigmentosa
Currently a smoker
Current use of vitamin A/ β-carotene supplements
Active arterial disease within 3 months prior to enrolment in the study, e.g. unstable angina, myocardial infarction, transient ischemic attack, stroke, coronary artery bypass graft surgery
History of malignancy, excepting basal or squamous cell skin carcinoma