The patient could have a mixed seborrheic-staphylococcal blepharitis. The bacterial toxins may cause further damage to the ocular tissue. The surrounding white part of the eye, the conjunctiva, can become very red and injected. Marginal corneal infiltrates may also be noted. The best prevention is to practice good lid hygiene.
Lid soaks and lid scrubs.
This can easily be performed once in the morning and once before going to sleep.