Failure or imperfection of vision at night or in dim light, with good vision only
on bright days. (Dorland, 27th ed)
http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Lng=FR&Expert=75382 France French night blindness oguchi disease scientific and technical information
--- https://www.inesss.qc.ca/fileadmin/doc/AETMIS/Rapports/AidesTechniques/ETMIS2006_Vol2_No9.pdf 2006 true Canada French Persons with Visual Disabilities self-help devices night blindness night blindness retinitis pigmentosa mobility limitation health technology assessment