Phlyctenule reaction on the cornea (Video)

This slitlamp video shows a phylectenule bump on the surface of the cornea. This inflammatory nodule is caused by a delayed hypersensitivity reaction to staph antigens in a case of bad blepharitis. This case was successfully treated with good lid hygeine, erythromycin ointment, and a mild steroid.

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phlyctenule on cornea
This photograph shows a phlyctenule that has formed on the lower corneal surface. These inflammatory nodules are usually caused by hypersensitivity to antigens such as staph infection of the eyelids.
The slit-beam light passes through it and illustrates the raised nature of this lesion.
phlyctenule eye
This microscopic photograph shows the cornea surface in a patient suffering from blepharitis.

Dr. Timothy Root is a practicing ophthalmologist and cataract surgeon in Daytona Beach, Florida. His books, video lectures, and training resources can be found at:


  1. Is there any sound to go along with these videos? My son has staph marginal keratitis and it would be really helpful to hear an explanation.

    Thanks in advance,



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