Dr. John Hahn graduated from Northwestern University Feinberg School of Medicine in 1997. Dr. Hahn completed a residency in Ophthalmology at Cleveland Clinic Foundation from 1998 to 2001. Dr. Hahn has two offices in Illinois.
Specializing in the field of Ophthalmology, Dr. Hahn is prepared to diagnose, treat and perform various types of surgeries for diseases, injuries, or trauma of the eye. Dr. Hahn may treat disorders such as glaucoma, corneal tumors, cataracts, retinal disorders, conjunctivitis, astigmatism and ocular tumors, among others.