AIM: To observe the treatment for ptosis patients with severe undercorrection after frontal muscle flap suspension surgery.

METHODS: Totally 46 patients(67 eyes)were randomly divided into 2 groups: 23 cases(33 eyes)in Group A were given conjoint fascial sheath(CFS)suspension surgery; 23 cases(34 eyes)in Group B Whitnall ligament suspension. Postoperative follow-up was 6mo. Corrected rate, recurrence rate and postoperative adverse reactions were compared and analyzed.

RESULTS:The corrected rates of the two groups were both satisfied without significant difference between the two groups(P>0.05). the Whitnall ligament suspension surgery had less recurrence than CFS suspension surgery, but the difference was not statistically significant(P>0.05). The rate of hypophasis after CFS suspension surgery was significantly less than that after Whitnall ligament suspension(P<0.05).

CONCLUSION: The two operations both have satisfied corrected rate and low recurrence rate, the Whitnall ligament suspension surgery is less damaging and more easy to operate, while CFS suspension surgery is repeatable and less rate of hypophasis.