A professional who inspects mounted eyeglasses for quality of work and compliance with prescription specifications, using precision optical measuring instrument. Responsibilities include:

• Examines frame for proper assembly, and for appearance of engraving and trim.
• Measures eyesize, temple length, and distance between lenses with ruler.
• Inspects alignment of lenses, nose pads, and temples with straightedge.
• Inspects lenses for color, seating in frame, and defects, such as striae, pits, and sharp edges.
• Examines lenses with power-determining and optical-centering instrument to ensure that optical center, focal center, power of lens, and refractive effect are in accordance with prescription.
• Returns defective articles for correction.