A dye to act as a filter for some of the light rays is also commonly included and probably gives some protection to the injured eye. The aerosol pinkeye sprays are most effective if applied several times a day. Injection of an antibiotic-steroid combination under the conjunctiva or eyelid has been helpful in reducing inflammation and in getting treatment into the deeper tissues of the eye. Severely affected eyes heal more rapidly if the eyelids are sutured together. This technique keeps the eye closed to block out sunlight and other irritants, and prevents drying of the injured cornea.
Tears hasten healing by washing away bacteria and promoting tissue repair.
A patch can be glued over the affected eye to shut out sunlight and other irritants. The success of this procedure depends on the effectiveness of the adhesive used. Poorly adhered patches allow the entry of egg-laying house flies. The resulting fly maggots can have a devastating effect on the affected eye. The eye needs protection for 2 to 3 weeks to allow healing.