Ahmara Gibbons Ross, MD, PhD

faculty photo
Assistant Professor of Ophthalmology at the Hospital of the University of Pennsylvania
Vice Chair of Equity, Diversity, and Inclusion, Department of Ophthalmology
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 Clinical Expertise

During my clinical training, I noticed striking similarities between patients assessing glaucoma and neuro-ophthalmology clinics. Training in both fields has allowed me to develop a specialized skill set to manage all forms of optic neuropathies and develop a niche sub-specialty that aligns with my research interests. This dual training has not only satisfied my intellectual and clinical interests but has also filled a critical gap in expertise within the field that could only be nurtured at a place like the University of Pennsylvania. I am one of only four known specialists practicing both Neuro-Ophthalmology and Glaucoma, when I inquired with ChatGPT about this dual training, my name was the only one listed for this unique specialty combination! I have proudly established a dedicated clinic for this small yet complex subset of patients with optic nerve and visual pathway disorders.

Description of Other Expertise

As an underrepresented minority in the field of ophthalmology, I have made local and national contributions to promote diversity and inclusion in our field. I am additionally interested in improving the recruitment and retention of underrepresented minorities in the field of ophthalmology. Part of this interest has developed into an educational investigation into the barriers encountered by these individuals within the academic pathway, addressing the barriers with rigorous research and expertise, and investigating whether the implementation of safeguards improves the outcomes.

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

Kwok A, Chaqour B, Khan RS, Aravand P, Dine K, Ross AG, Shindler KS: Pharmacological Activation and Transgenic Overexpression of SIRT1 Attenuate Traumatic Optic Neuropathy Induced by Blunt Head Impact. Translational Vision Science Technolology (TVST) 13(9), September 2024.

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.

Meng M, Chaqour B, O'Neill N, Dine K, Sarabu N, Ying GS, Shindler KS, Ross AG: Comparison of Brn3a and RBPMS Labeling to Assess Retinal Ganglion Cell Loss During Aging and in a Model of Optic Neuropathy. Investigations Ophthalmology Vision Science (IOVS) 64(4), April 2024.

Verma SS, Gudiseva HV, Chavali VRM, Salowe RJ, Bradford Y, Guare L, Lucas A, Collins DW, Vrathasha V, Nair RM, Rathi S, Zhao B, He J, Lee R, Zenebe-Gete S, Bowman AS, McHugh CP, Zody MC, Pistilli M, Khachatryan N, Daniel E, Murphy W, Henderer J; Regeneron Genetics Center; Kinzy TG, Iyengar SK, Peachey NS; VA Million Veteran Program; Taylor KD, Guo X, Chen YI, Zangwill L, Girkin C, Ayyagari R, Liebmann J, Chuka-Okosa CM, Williams SE, Akafo S, Budenz DL, Olawoye OO, Ramsay M, Ashaye A, Akpa OM, Aung T, Wiggs JL, Ross AG, Cui QN, Addis V, Lehman A, Miller-Ellis E, Sankar PS, Williams SM, Ying GS, Cooke Bailey J, Rotter JI, Weinreb R, Khor CC, Hauser MA, Ritchie MD, O'Brien JM.: A multi-cohort genome-wide association study in African ancestry individuals reveals risk loci for primary open-angle glaucoma. Cell 187: 464-480, Jan 2024.

Ross AG, Higginbotham EJ: Adopting More Precise Metrics to Move Everyone Closer to Eye Health. JAMA Ophthalmology 2024.

Chaqour B, Duong TT, Yue J, Liu T, Camacho D, Dine KE, Esteve-Rudd J, Ellis S, Bennett J, Shindler KS, Ross AG.: AAV2 vector optimization for retinal ganglion cell-targeted delivery of therapeutic genes. Gene Ther 2024.

Meng M, Chaqour B, O'Neill N, Dine K, Sarabu N, Ying GS, Shindler KS, Ross AG: Comparison of Brn3a and RBPMS Labeling to Assess Retinal Ganglion Cell Loss During Aging and in a Model of Optic Neuropathy. Invest Ophthalmology and Vision Science 65(1), 2024.

Soucy JR, Aguzzi EA, Cho J, Gilhooley MJ, Keuthan C, Luo Z, Monavarfeshani A, Saleem MA, Wang XW, Wohlschlegel J; RReSTORe Consortium; Baranov P, Di Polo A, Fortune B, Gokoffski KK, Goldberg JL, Guido W, Kolodkin AL, Mason CA, Ou Y, Reh TA, Ross AG, Samuels BC, Welsbie D, Zack DJ, Johnson TV.: Retinal ganglion cell repopulation for vision restoration in optic neuropathy: a roadmap from the RReSTORe Consortium. Mol Neurodegener 18: 64, Sep 2023.

Camacho DK, Go CC, Chaqour B, Shindler KS, Ross AG.: Emerging Gene Therapy Technologies for Retinal Ganglion Cell Neuroprotection. J Neuroophthalmol 43: 330-340, Sep 2023.

Johnson TV, Baranov P, Di Polo A, Fortune B, Gokoffski KK, Goldberg JL, Guido W, Kolodkin AL, Mason CA, Ou Y, Reh TA, Ross AG, Samuels BC, Zack DJ.: The Retinal Ganglion Cell Repopulation, Stem Cell Transplantation, and Optic Nerve Regeneration Consortium. Ophthalmol Sci 3: 100390, Aug 2023.

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Last updated: 01/02/2025
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