Esthetic improvement of the nasolabial region is one of the goals of cleft lip palate surgery. The professional evaluation of esthetic result is made by subjective perception of the clinician, which has a reproducible problem. When a clinician assesses the resultant improvement, intact nasolabial deformities are inclusive. Because the deformities vary among the cleft lip patients. Then the authors are attempting to make a fuzzy expert system which can produce a semi objective improvement index of the nasal morphology in cleft lip patients. This index would be useful for comparing the timimg of nasal surgery and different procedures.
