Medical devices, namely, portable light units for use in the fields of light therapy and light supplementation for neurological disorders; medical devices, namely, portable light units for use in the field of light therapy for neurological disorders; light boxes for providing light therapy for neurological disorders; portable ocular light therapy apparatuses for the treatment of symptoms of neurological disorders; portable ocular light therapy apparatuses for the treatment of neurological disorders; portable ocular light therapy apparatuses for the treatment of symptoms of motor-related neurological disorders; portable ocular light therapy apparatuses for the treatment of motor-related neurological disorders; portable ocular light therapy apparatuses for the treatment of symptoms of Parkinson's disease; portable ocular light therapy apparatuses for the treatment of Parkinson's disease