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Thomas Prager, PhD

Adjunct Professor of Ophthalmology, Academic Institute
Full Member, Research Institute
Houston Methodist
Weill Cornell Medical College


Dr. Prager holds a doctorate from Tulane University and a master’s of public health from the University of Texas School of Public Health. Prior to joining the Methodist Hospital, Dr. Prager was a clinical professor in the department of ophthalmology at the University of Texas Medical Branch.

Dr. Prager currently works in the department of ophthalmology at Houston Methodist Hospital, providing non-invasive diagnostic testing to ophthalmology patients. He has a long standing interest in research and has an extensive publication record, including eight book chapters.

Description of Research

Dr. Prager’s research focus is the non-invasive evaluation of the visual system through ultrasonograpy and electrophysiology. He holds a patent for an immersion biometry shell for accurate ocular measurements prior to cataract surgery, a device that has become a standard of care and is used in 39 countries. Dr. Prager’s most recent invention, the Clear Scan Cover, was created to simplify examinations of the anterior segment of the eye, and to facilitate the clinical use of ultrasonography.

Areas Of Expertise

Ultrasonography Electrophysiology Functional outcomes
Education & Training

MPH, The University of Texas School of Public Health
PhD, Tulane University
MS, Tulane University
Postdoctoral Fellowship, McGovern Medical School at UTHealth

Presumed ischemic optic neuropathy
Go, JA, Kini, A, Al Othman, B, Prager, T & Lee, AG 2019, Canadian Journal of Ophthalmology, vol. 54, no. 5, pp. e241-e244.

A novel use of ultrasound biomicroscopy
Sadaka, A, Prager, T, Beaver, H & Malik, A 2018, , Eye (Basingstoke), vol. 32, no. 2, pp. 474-475.

From A… to… Z(OOR): The Clinical Spectrum of Acute Zonal Occult Outer Retinopathy
Wang, M, Sadaka, A, Prager, T, Lee, AG, Pellegrini, F, Cirone, D, De Simone, L & Cimino, L 2018, , Neuro-Ophthalmology, vol. 42, no. 4, pp. 215-221.

Use of A-scan Ultrasound and Optical Coherence Tomography to Differentiate Papilledema from Pseudopapilledema
Saenz, R, Cheng, H, Prager, TC, Frishman, LJ & Tang, RA 2017, , Optometry and Vision Science, vol. 94, no. 12, pp. 1081-1089.

Diagnostic Ophthalmic Ultrasound for Radiologists
Kendall, CJ, Prager, T, Cheng, H, Gombos, D, Tang, RA & Schiffman, JS 2015, , Neuroimaging Clinics of North America, vol. 25, no. 3, pp. 327-365.

Microbial contamination of ultrasound biomicroscopy probes: Evaluation of cross-infection risk
Bell, NP, Anand, A, Wanger, A & Prager, T 2012, , Journal of Cataract and Refractive Surgery, vol. 38, no. 1, pp. 174-175.

Effects of early maternal docosahexaenoic acid intake on neuropsychological status and visual acuity at five years of age of breast-fed term infants
Jensen, CL, Voigt, RG, Llorente, AM, Peters, SU, Prager, T, Zou, YL, Rozelle, JC, Turcich, MR, Fraley, JK, Anderson, RE & Heird, WC 2010, , Journal of Pediatrics, vol. 157, no. 6, pp. 900-905.

A comparison of two-way text versus conventional paging systems in an academic ophthalmology department
Ighani, F, Kapoor, KG, Gibran, SK, Davis, GH, Prager, T, Chuang, AZ & Godley, B 2010, Journal of Medical Systems, vol. 34, no. 4, pp. 677-684.

Mintz-Hittner, HA & Prager, T 2009, Retina, vol. 29, no. 4, pp. 565-568.

New technology for examining the anterior segment by ultrasonic biomicroscopy
Bell, NP, Feldman, RM, Zou, Y & Prager, T 2008, , Journal of Cataract and Refractive Surgery, vol. 34, no. 1, pp. 121-125.

Ultrasound biomicroscopy for estimation of tumor thickness for conjunctival melanoma
Ho, VH, Prager, TC, Diwan, H, Prieto, V & Esmaeli, B 2007, , Journal of Clinical Ultrasound, vol. 35, no. 9, pp. 533-537.

Empirical advanced orthokeratology through corneal topography: The University of Houston clinical study
El Hage, S, Leach, NE, Miller, W, Prager, TC, Marsack, J, Parker, K, Minavi, A & Gaume, A 2007, , Eye and Contact Lens, vol. 33, no. 5, pp. 224-235.

Lodged intracanalicular plugs as a cause of lacrimal obstruction
Mazow, ML, McCall, T & Prager, TC 2007, , Ophthalmic Plastic and Reconstructive Surgery, vol. 23, no. 2, pp. 138-142.

Comparison of the Ocular Hypotensive Efficacy of Adjunctive Brimonidine 0.15% or Brinzolamide 1% in Combination with Travoprost 0.004%
Feldman, RM, Tanna, AP, Gross, RL, Chuang, AZ, Baker, L, Reynolds, A & Prager, T 2007, , Ophthalmology, vol. 114, no. 7.

Classifying the severity of corneal ulcers by using the "1, 2, 3" rule
Vital, MC, Belloso, M, Prager, TC & Lanier, JD 2007, , Cornea, vol. 26, no. 1, pp. 16-20.

Enhancing Intraocular Lens Outcome Precision: An Evaluation of Axial Length Determinations, Keratometry, and IOL Formulas
Prager, TC, Hardten, DR & Fogal, BJ 2006, , Ophthalmology Clinics of North America, vol. 19, no. 4, pp. 435-448.

Surgical specimen handling for conjunctival melanoma: Implications for tumor thickness determination and sentinel lymph node biopsy [5]
Esmaeli, B, De Martelaere, S, Ozkan, Y, Prager, T, Prieto, V & Diwan, AH 2006, Ophthalmic Plastic and Reconstructive Surgery, vol. 22, no. 3, pp. 238-239.

The diagnosis and characteristics of moderate dry eye in non-contact lens wearers
Narayanan, S, Miller, WL, Prager, TC, Jackson, JA, Leach, NE, McDermott, AM, Christensen, MT & Bergmanson, JPG 2005, , Eye and Contact Lens, vol. 31, no. 3, pp. 96-104.

Microbial contamination of immersion biometry ultrasound equipment
Velázquez-Estades, LJ, Wanger, A, Kellaway, J, Hardten, DR & Prager, TC 2005, , Ophthalmology, vol. 112, no. 5, pp. e13-e18.

Effects of maternal docosahexaenoic acid intake on visual function and neurodevelopment in breastfed term infants
Jensen, CL, Voigt, RG, Prager, T, Zou, YL, Fraley, JK, Rozelle, JC, Turcich, MR, Llorente, AM, Anderson, RE & Heird, WC 2005, , American Journal of Clinical Nutrition, vol. 82, no. 1, pp. 125-132.