RESUMEN
To evaluate and compare the efficacy of frontalis sling using fascia lata by the operative ages. Thirty-two congenital blepharoptosis patients(36 eyes)were divided into three groups: Group 1(below 2 years old, 12 eyes), Group 2(between 3 years and 5 years old, 14 eyes)and Group 3(over 6 years old, 10 eyes). Frontalis sling by double triangle of Crawford was performed with fascia lata, and were followed up for 1, 3 and 6 months. Success rate of frontalis suspension operation is graded as poor(below 1mm), fair(2 mm)and good(above 3 mm)based on MRD 1: In Group 1; 0%, 8.3%, 91.7%at 1 month, 16.7%, 33.3%, 50%at 3 months, 50%, 33.4%, 16.6%, at 6 months. In Group 2; 0%, 7.2%, 92.8% at 1 months, 0%, 14.3%, 85.7% at 3 months, 14.3%, 14.3% 71.4% at 6 months. n Group 3; only 10%had fair at 6 months, most had good results. There were congenital blepharoptosis combined with systemic disease and reoperations(2 cases) were done by with frontalis sling in only group 1. Therefore, it is suggested that the correction of congenital blepharoptosis be delayed until the child is 3-5 or above 6 years old, if the incidence of amblyopia is small.