10 Medical apparatuses and devices, and parts and accessories therefor, used for analyzing, diagnosing, and monitoring meibomian glands and eye disease, namely, dry eye and meibomian gland dysfunction; Optical and photographic apparatus and instruments, and parts and accessories therefor, namely, interferometers and cameras, for analyzing, diagnosing, and monitoring meibomian glands and eye disease, namely, dry eye and meibomian gland dysfunction; medical imaging apparatuses and devices comprising optical lens, camera, lamp, LED, spectrometer, used for analyzing, diagnosing, and monitoring meibomian glands and eye disease, namely, dry eye and meibomian gland dysfunction