A patient with ptosis, upper 4 mm of cornea is covered by upper eyelid. Grade of Ptosis is -
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
Mild
Moderate
Severe
Profound
Diseases of orbit, Lids and lacrimal apparatus