<prompt> A 3 year old child is presenting with drooping of upper lid since bih. On examination , the palpebral apeure height is 6 mm and with poor levator palpebrae superioris function. What is the procedure recommendedFrontalis Sling surgeryMullerectomyFasanella Servat operationObservation  <response>: Ptosis: - Ptosis or blepharoptosis Greek - to fall is the drooping of the upper eyelid to a level that covers more than 2mm of the superior cornea. Classification:- Congenital:- Simple Associated with Superior Rectus weakness Associated with Marcus Gun Jaw Winking phenomenon Acquired:- Neurogenic - III Cn palsy , Horners syndrome Myogenic - myasthenia gravis, ocular myopathy, senile Mechanical - excess weight due to edema, tumors Traumatic - trauma to levator palpebrae Management :- TREAT the systemic cause Mild Ptosis:- Mullerectomy -- Muller muscle resection for 1mm ptosis HORNERS SYNDROME Fasanella Servat operation --simple tarsoconjunctival resection Moderate Ptosis:- With fair - good levator function -- LEVATOR RESECTION Severe Ptosis with Poor Lps Function:- BROW SUSPENSION FRONTALIS SLING SURGERY where Lids are attached to the frontalis muscle with a silicon tube. So with the contraction of frontalis , lids elevate. Ref:- A K Khurana Comprehensive Ophthalmology 7th edition; pg num:- 395 