sebaceous gland atrophy Meibomian gland atrophy atrophic tarsal glands MP:0000651 MP:0001345 atrophic meibomian glands atrophic palpebral glands MPheno.ontology acquired diminution of the size of the sebaceous glands embedded in the tarsal plate of each eyelid, associated with wasting as from death and reabsorption of cells, diminished cellular proliferation, decreased cellular volume, pressure, ischemia, malnutrition, reduced function or malfunction, or hormonal changes atrophic glandulae tarsales small Meibomian gland tarsal gland atrophy