Lid Flare Measurement with Lateral Midpupil Distances.

Purpose: To assess the sensitivity and specificity of lateral midpupil lid distances for the detection of upper lid lateral flare.

Methods: Lateral lid flare was determined by unanimous agreement among six experienced oculoplastic surgeons in the grading of photographs obtained for patients with Graves orbitopathy (GO). Bézier lines were employed to extract the upper eyelid contours of the patients and a control group of age and sex matched subjects.