To the Editor
.—There is no consensus on the safety of driving with telescopic aids. There are proponents who extol the benefits of rehabilitating partially sighted drivers with such devices. However, there is ample evidence of the inherent visual field defects and other stumbling blocks that make driving hazardous to them as well as to the public on the road. Minimum visual requirements for licensing drivers are generally based on visual physiology, governed by the recognition of standard-sized objects on the highway. Scientific proof is elusive concerning what level of visual acuity is safe or unsafe for driving. The National Conference on Telescopic Devices and Driving1 attempted to propose minimum standards for regulating drivers who require such aids.Since May 1977, New York State has gathered statistics concerning telescope-restricted drivers, and everybody interested in this subject looked forward to their findings. Mr Charles Bostick, Director Division of Research and