Moderate to severe forms of ptosis may require surgery to reduce impairments.
Indications for surgery:
(1) need for improved cosmesis
(2) visual field loss
(3) occlusion amblyopia
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Contraction of Levator
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Function of Muscle
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Surgical Intervention
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10 – 15 mm
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normal
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advance the aponeurosis for the levator muscle
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3 to 9 mm
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fair
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resect levator muscle
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0 to 2.9 mm
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poor or absent
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sling material supported by frontalis muscle
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where:
• Levator = Levator palpebrae superioris
