ASSESSMENT OF FACIAL WRINKLES 135 oo t,'.-4 ex,% f,q u.--, • ,.• oo ß

136 JOURNAL OF COSMETIC SCIENCE 1=-0.859 0 10 20 30 40 50 60 70 80 Age Figure 3. Individual plots of standard wrinkle grades for the eye corners according to age. The standard wrinkle grade for the eye corners was strongly correlated with age (r = 0.859, p 0.001). r=0.803 - , - i ß , ß i ß i i ß 10 20 30 40 50 60 70 80 Age Figure 4. Individual plots of standard wrinkle grade for the cheek according to age. The standard wrinkle grade for the cheek was well-correlated with age (r = 0.803, p 0.001). slightly more consistent with the standard grades. This may be because the probability of consistency was decreased due merely to the greater number of scoring grades in the nine-grade scale. In addition, in the subject group used for the five-grade evaluation, many grade 4 or 5 cases were observed, and their scoring was therefore easy. In our experience, it is desirable to use a scale appropriate to the degree of wrinkles in the group to be evaluated. Concerning the effects of the facial site (forehead and eye corners) on the scoring, the