This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables.
To the Editor.
—My previous letter (Archives 1980;98:930) drew attention to the difficulty of correlating medical or visual impairments and automobile driving safety. I pointed out errors in the accident statistics of telescope-restricted drivers in New York State. Telescope-restricted drivers were found to actually have between two and three times more accidents per 100 million miles than the rest of the New York driver population.While the original statistical errors have formed the basis of subsequent publications, new facts have come to my attention since the publication of my letter.No driving records of telescope-restricted drivers who were licensed before May 1977 were included in the New York study (written communication, July 7, 1980). The New York statistics gave the driving performances of 168 telescope-restricted drivers from May 1977 to November 1978. Only 22 telescope-restricted drivers were licensed between May 19, 1977, and April 5,1978 (written communication, April 5,1978). The