A patient with ptosis, upper 4 mm of cornea is covered by upper eyelid. Grade of Ptosis is -: (A) Mild, (B) Moderate, (C) Severe, (D) Profound
Answer is A. It is measured by the amount of cornea covered by the lid and subtracting 2mm. Mild 2mm moderate 3mm severe 4mm Ref :ak khurana 6th edition