الفهرس 
Choice of ptosis surgery based on levator function and severity of ptosisOnly 14 pages are availabe for public view
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Abstract
To compare the results of two different frontalis sling designs for
severe congenital ptosis: Fox’s single pentagon and a single triangle technique
as regards cosmetic outcome, functional success.
Methods: In comparative prospective study included 37 eyes of 30 patients
with simple severe congenital ptosis and poor levator function (≤4 mm); divided
to two groups; group I underwent Fox’s single pentagon technique (15 patients
with 17 eyes), and group II underwent single triangle technique (15 patients
with 20 eyes). Cosmetic outcome, and functional success.
Results: follow-up time of 6 months (range, 6.0 – 8.0 months).
The patients achieved excellent cosmetic outcome in both groups. The
intergroup difference was not statistically significant (P > 0.05). However,
single triangle patients had better cosmetic outcome as regard scare evaluation
with significant intergroup difference (p < 0.05).
The mean functional success in Fox’s single pentagon group is 82.4% and in
single triangle group is 90%, which indicated that both techniques had same
effect on functional success as majority of patients in both techniques were
succeed functionally. Mean increase in marginal reflex distance 1 (MRD-1)
3.3± 0.14 mm in the Fox pentagon group and 3.6 ±0.18 in single triangle group.
The difference in the groups was not significant.
Conclusion: Both techniques were effective in reducing the amount of
blepharoptosis and achieving a natural appearing cosmetic outcome. Based on
the eyelid crease incision, optimal exposure of tarsus and tarsal sling fixation
principles. The single triangle design using the open technique was
recommended as simple, effective with better cosmetic outcom.