AI analyzes face photos to determine eye shape. Tool considers eyelid curve, crease position, and eye proportions
Lens index measures how efficiently eyewear material bends light. Higher index lenses are thinner, lower index lenses are thicker. Prescription lens index ranges from 1.5 to 1.74
Diamond face has narrow forehead, high cheekbones and tapering chin. Face is widest at cheeks and narrowest at eye level. Face shape can be determined through apps, public polls or video analysis
Warby Parker launched in 2010 offering $95 flat fee for new frames. Brand provides free home try-ons and VR glasses simulator. Competitors previously charged hundreds of dollars for frames
Face is significantly longer than it is wide. Uniform width extends from forehead to jawline. Features pronounced round chin and high forehead. Characterized by long cheek-line or mid-face
Broad forehead and prominent cheekbones taper to delicate pointy chin. Often features widow's peak accentuating heart-like contour. Narrower jawline contrasts with expansive forehead