1 hordeolum pathogens: staphylococcus especlally staphylococcus aureus Clinical classification v internal hordeolum: meibomian gland infection Y external hordeolum(sty): Moll gland or Zeis gland infection5 1. hordeolum  pathogens :staphylococcus especially staphylococcus aureus  Clinical classification: internal hordeolum ：Meibomian gland infection external hordeolum (sty)： Moll gland or Zeis gland infection