Dr. Denise Ann-Marie John is a board-certified ophthalmologist specializing in glaucoma and anterior segment disease at Michigan Medicine's Kellogg Eye Center. She provides comprehensive medical, laser, and surgical treatments for glaucoma, and also manages cataracts and other conditions affecting the front part of the eye. Her research focuses on factors that influence intraocular pressure variation, contributing to a deeper understanding of glaucoma management.

Patients describe Dr. John as thorough, clear in her explanations, and attentive to their questions and concerns. She takes time to listen and ensures that patients understand their conditions and treatment options. With a calm and professional demeanor, Dr. John puts her patients at ease, even during complex procedures. Many of her patients express deep trust in her care and have recommended her to family and friends.