Abstract
An obstacle to the more widespread use of optical aids for partially sighted persons is the great variety of such devices needed to provide for the specific needs of each pa tient. Spectacle-borne aids present an ad ditional problem—if these are prescribed but later found not to be optimal, replacement with a new aid is a considerable expense for the patient. More visually handicapped pa tients would be helped if a simple, flexible method could be found to streamline dis pensing by standardizing sizes of spectacle aids so that they could be used interchange ably in spectacles of varying sizes and shapes. A recent innovation at the Low Vi sion Ginic of the Cleveland Society for the Blind meets some of these requirements.
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