Table 1.

Basic Characteristics of the Patients

Parameter	Results
Total no. patients	100
Mean age (y)	52.3 ± 18.0
Gender
Men	27
Women	73
Subjective symptom
Unilateral ptosis	29
Bilateral ptosis	46
No ptosis	25
Margin reflex distance 1
Mean (mm)	1.9 ± 1.3
Lateral difference (mm)	0.9 ± 0.9
Height of eyelid crease
Mean (mm)	2.2 ± 1.9
Lateral difference (mm)	1.2 ± 1.2
Eyebrow height
Mean (mm)	29.7 ± 4.7
Lateral difference (mm)	1.5 ± 1.7
Levator contractile function
Mean (mm)	9.4 ± 2.6
Lateral difference (mm)	1.4 ± 1.8