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Glaucoma Case Files

Surgical Insights and Real Cases From the OR

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Determining the Next Path in a Progressing Glaucoma Case

John P. Berdahl, MD; Tanner J. Ferguson, MD; and Mitch Ibach, OD, FAAO

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Mitch Ibach, OD, FAAO, outlines a recent case for John P. Berdahl, MD, and Tanner J. Ferguson, MD, in which a woman in her early 80s with a history of severe glaucoma presented with rising IOP. The patient had a history of cataract surgery and iStent (Glaukos) implantation and additional subconjunctival surgery with Xen Gel Stent (AbbVie) 5-7 years ago. The patient also claimed to have difficulty complying with topical drops due to Parkinson disease. The three physicians discuss options for safe pathways moving forward to manage this progressing glaucoma.

Posted: 3/02/2026

Keywords:

Xen Gel Stent

•

iStent

•

Durysta

•

ECP

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Determining the Next Path in a Progressing Glaucoma Case

John P. Berdahl, MD; Tanner J. Ferguson, MD; and Mitch Ibach, OD, FAAO

Mitch Ibach, OD, FAAO, outlines a recent case for John P. Berdahl, MD, and Tanner J. Ferguson, MD, in which a woman in her early 80s with a history of severe glaucoma presented with rising IOP. The patient had a history of cataract surgery and iStent (Glaukos) implantation and additional subconjunctival surgery with Xen Gel Stent (AbbVie) 5-7 years ago. The patient also claimed to have difficulty complying with topical drops due to Parkinson disease. The three physicians discuss options for safe pathways moving forward to manage this progressing glaucoma.

Posted: 3/02/2026

Keywords:

Xen Gel Stent

•

iStent

•

Durysta

•

ECP

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