[Chronic alcohol-tobacco poisoning: towards an early detection of optic neuropathy]

Forty-two patients (33 men, 9 women) with normal visual acuity admitted to an alcoholism rehabilitation programme were evaluated for colour vision using the automatized Fransworth-Munsell test (ChromopsR) and for central visual field using Friedmann's analyser. An early colour blindness without axis, i.e. a lack of colour discrimination, was often found. At the same time, in the more intoxications perimetric defects appeared in the 30 degrees area first centrally, then followed by arcuate superior scotomas.