Faculty

Ahmara Gibbons Ross, MD, PhD

faculty photo
Assistant Professor of Ophthalmology at the Hospital of the University of Pennsylvania
Department: Ophthalmology
Graduate Group Affiliations

Contact information
Scheie Eye Institute
51 N. 39th Street
Philadelphia, PA 19104
Office: 215-662-8715
Fax: 215-243-8825
Education:
BA
Bryn Mawr College, 2003.
PhD (Molecular Pharmacology/Structural Biology)
Thomas Jefferson University, 2011.
MD
Jefferson Medical College, 2011.
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Description of Research Expertise

My research interest focuses on understanding the genetic basis of glaucoma and using this information to develop novel drugs for the treatment of optic neuropathies. My long-term goal is to address hindrance of compliance to the clinical management of glaucoma with adeno-associated vector gene targets. To date, I have worked in three different areas of research: understanding
mechanisms of programmed cell death, developing drugs to control this process, and finally developing a knock-out mouse models using advanced cloning methods. After completing two fellowships in Neuro-ophthalmology and Glaucoma, I am pursuing these same mechanisms of extracellular cross talk and intracellular anti-apoptotic pathways to treat diseases involved in optic nerve degeneration and cell protection. It is my goal to develop gene-transfer techniques to reverse the process of optic nerve cell death in glaucoma. While my primary focus currently emphasizes the role of SIRT1 as a potential gene target to enhance retinal ganglion cell survive, my ultimate goal is to develop a strategy to replace gene mutations with viral gene
transduction in a cell targeted manner, with the aim of treating glaucoma at every cell type effected by
the disease.

Selected Publications

Foshe S, Shi S, Bell BA, Lee S, Shankar A, Dine K, Song Y, Vithayathil J, Ross AG, Dunaief JL: A Remarkable Tale: Increased Retinal Fluorescence Following Application of Permanent Marker Ink to Mouse Tails. Invest Ophthalmol Vis Sci 67(3): 40, March 2026.

Realini T, Balasubramani GK, Kenkre T, Wolsk J, Kass MA, Gazzard G, Wisniewski SR; COAST Study Investigators: Realini T, Balasubramani GK, Kenkre T, Wolsk J, Kass MA, Gazzard G, Wisniewski SR; COAST Study Investigators. Design and Baseline Characteristics of Participants in the Clarifying the Optimal Application of Selective Laser Trabeculoplasty (SLT) Therapy (COAST) Trial 1. 2026.

Vrathasha V, Pahl MC, Pippin JA, Nikonov S, He J, Halimitabrizi M, Moksha L, Salowe R, Edziah AA, Bradford Y, Zhu Y, Gudiseva HV, Chavali VRM, da Costa BL, Berry AM, Quinn PMJ, Cui QN, Miller-Ellis E, Sankar PS, Ross AG, Addis V, Verma SS, Wells AD, Grant SFA, O'Brien JM: Variant-to-gene mapping identifies ARHGEF12 as a primary open-angle glaucoma effector gene operating within retinal ganglion cells. bioRxiv pre-print 2026.

Chaqour B, Rossman JB, Meng M, Dine KE, Ross AG, Shindler KS.: SIRT1-based therapy targets a gene program involved in mitochondrial turnover in a model of retinal neurodegeneration. Sci Rep 15: 13585, Apr 2025.

Brown JS, Mumford S, Alexis DA, Ross AG, Higginbotham EJ.: Gender Differences in Patient-Physician Communication in Ophthalmic Practice, Pre- and Post-COVID-19 Period. Am J Ophthalmol 275: 114-120, Mar 2025.

O'Neill N, Khan RS, Abd Alhadi S, Dine KE, Geisler JG, Chaqour B, Ross AG, Shindler KS.: Mitochondrial Uncoupler, 2,4-Dinitrophenol, Reduces Spinal Cord Paralysis and Retinal Ganglion Cell Loss in the Experimental Autoimmune Encephalomyelitis Model of Multiple Sclerosis. Biomolecules 15: 189, Jan 2025.

Brahim Chaqour, Jacob B. Rossman, Miranda Meng, Kimberly E. Dine, Ahmara G. Ross & Kenneth S. Shindler: SIRT1-based therapy targets a gene program involved in mitochondrial turnover in a model of retinal neurodegeneration. Scientific Reports 2025 Notes: In review (pending electronic submission).

Suad Abd Alhadi, David Camacho, Brahim Chaqour, Jacob B. Rossman, Jennifer C. Pham, Kenneth S. Shindler, Ahmara G. Ross: Neuroprotective Effects of SIRT1 in Human RGCs Derived from iPSCs Following Oxidative Stress Induction at Early and Late Stages of Differentiation. Experimental Eye Research 2025 Notes: in submission/review with minor edits.

O'Neill N, Meng M, Chaqour B, Dine K, Sarabu N, Pham JC, Shindler KS, Ross AG: Comparison of SNCG and NEFH Promoter-Driven Expression of Human SIRT1 Expression in a Mouse Model of Glaucoma. Translational Vision Science Technology (TVST) 13(8), August 2024.

Ross AG, Higginbotham EJ: Adopting More Precise Metrics to Move Everyone Closer to Eye Health. JAMA Ophthalmology 142(6): 546-547, June 2024.

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Last updated: 05/19/2026
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