Although the upper lid have greater number and volume of<unk> s than the lower lid, there is no consensus whether it contributes more to the tearfilm stability. The glands do not have direct contact with eyelash follicles. The process of blinking releases meibum into the lid margin.
Meibomian gland
Serous gland
Areolar gland
Callus
Skene's gland
Subfornical organ
Ciaccio's glands
Cryptocotyle