Please help! what is the difference between lid abscess and orbital cellulitis?

Eye infection: Orbital cellulitis is an infection of the orbit posterior to the orbital septum. Usually from a sinus infection. It can cause limited eye movement, bulging eyes and even blindness. It needs to be traded aggressively with antibiotics and possible surgical drainage if an abscess is present. A lid abscess is a localized collection of pus in the eyelids anterior to the orbital septum. Not as serious.