This paper reports on a study of visual acuity among radiologists. Twenty-eight radiologists had their visual acuity tested by an optometrist. One week later, 70 medical school faculty radiologists were asked to respond to a printed questionnaire that elicited information about: (1) the date of the respondent's immediately previous examination; (2) wearing of corrective lenses for various activities; (3) opinions about requiring vision examinations for radiologists; and (4) the importance of the issue of visual acuity to radiologists. The examination revealed that 23 of the 28 radiologists had the equivalent of 20/20 acuity. Five had acuity equivalent to 20/25, three of these with corrective lenses and two without. Forty-three radiologists responded to the questionnaire. Of these, 67% had their vision examined within the past 2 years, 19% had not had their vision checked within the past 3 years, and 9% had not had their vision examined within the past 5 years. Eighty-four percent wore corrective lenses sometimes or always for film reading. Fifty-six percent of the radiologists believed that periodic testing of visual acuity should be required in the profession; 37% thought it should be optional; 7% thought it should not be required. Forty-one of the 43 believed that periodic visual acuity testing was very important or somewhat important. (Contains 15 references.) (KRN)