The wearing of tinted spectacle lenses is considered by some healthcare workers to be a marker of psychopathology or hypochondriacal personality type. The purpose of this study was to determine whether there a relationship between the wearing of tinted spectacle lenses and personality type in physically healthy subjects. A multidimensional standardized self-report inventory (Sixteen Personality Factor Questionnaire, 5th Edition) was used to determine the personality type of 98 physically healthy participants. Twenty currently wore tinted spectacle lenses for reasons other than sun protection, out door or indoor glare reduction or fashion. The remainder did not wear tinted spectacle lenses for any purpose other than sun protection. Tinted lens wear and no tinted lens wear groups were age and gender matched. There was no statistically significant difference in personality type between the two subject groups in terms of five global personality factors; extraversion, anxiety, tough-mindedness, independence and self-control. This suggests that the use of tinted lenses by physically healthy people is unlikely to be an indicator of personality type.Key words: tinted spectacle lenses, personality type, Sixteen Personality Factor Questionnaire 5th Edition.The wearing of tinted spectacle lenses is considered by some healthcare workers to be a marker of psychopathology (Trevor-Roper and Curran, 1984;Smyth, 1990) or hypochondriacal personality type (Howard and Valori, 1989) however, others have commented that there is very little evidence to support this proposition (Brandon, 1985;Bender, 1990;Swanson, 1990). Quinn (1990) has warned against the labeling of people who wear tinted lenses as psychoneurotic and other researchers have reported the use of tinted spectacle lenses to reduce symptoms associated with eye diseases such as blepharospasm (Grandas et al., 1988).The hypothesis that there is a relationship wearing tinted spectacle lenses between psychopathology or personality type is based on anecdotes and old references. A literature search revealed only one rigorous study in this area. Howard and Valori (1989) used the Symptom Check List 90 (SCL 90-a self-report measure of distress and psychopathology), to demonstrate that the wearing of tinted spectacle lenses was a valid indicator of psychological distress. Their subjects were drawn from a hospital outpatient department and none had ocular problems but all had a medical condition such as diabetes or angina.It would be useful to know if there is a relationship between the wearing of tinted spectacle lenses and personality type in physically healthy people because if the suggestion that there is a relationship between the wearing of tinted lenses and personality is incorrect, then some health care professionals may unfairly prejudice against those people who choose to wear tinted spectacles for reasons such as sun protection or 2 fashion. A search of the literature failed to reveal any studies that have investigated the possibility of a relationship between the w...