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Thomas Prager, PhD

Adjunct Professor of Ophthalmology, Institute for Academic Medicine
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
Postdoctoral Fellowship, Department of Ophthalmology, University of Texas Medical School, Houston, TX
MS, Tulane University

A novel use of ultrasound biomicroscopy
Sadaka, A, Prager, T, Beaver, H & Malik, A 2018, Eye (Basingstoke), vol. 32, no. 2, pp. 474-475. DOI: 10.1038/eye.2017.190

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 2017, Neuro-Ophthalmology, pp. 1-7. DOI: 10.1080/01658107.2017.1400076

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. DOI: 10.1097/OPX.0000000000001148

Diagnostic Ophthalmic Ultrasound for Radiologists
Kendall, CJ, Prager, TC, Cheng, H, Gombos, D, Tang, RA & Schiffman, JS 2015, Neuroimaging Clinics of North America, vol. 25, no. 3, pp. 327-365. DOI: 10.1016/j.nic.2015.05.001

Microbial contamination of ultrasound biomicroscopy probes: Evaluation of cross-infection risk
Bell, NP, Anand, A, Wanger, A & Prager, TC 2012, Journal of Cataract and Refractive Surgery, vol. 38, no. 1, pp. 174-175. DOI: 10.1016/j.jcrs.2011.09.018

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, TC, Zou, YL, Rozelle, JC, Turcich, MR, Fraley, JK, Anderson, RE & Heird, WC 2010, Journal of Pediatrics, vol. 157, no. 6, pp. 900-905. DOI: 10.1016/j.jpeds.2010.06.006

A comparison of two-way text versus conventional paging systems in an academic ophthalmology department
Ighani, F, Kapoor, KG, Gibran, SK, Davis, GH, Prager, TC, Chuang, AZ & Godley, B 2010, Journal of Medical Systems, vol. 34, no. 4, pp. 677-684. DOI: 10.1007/s10916-009-9281-x

Mintz-Hittner, HA & Prager, TC 2009, Retina, vol. 29, no. 4, pp. 565-568. DOI: 10.1097/IAE.0b013e31819bac90

New technology for examining the anterior segment by ultrasonic biomicroscopy
Bell, NP, Feldman, RM, Zou, Y & Prager, TC 2008, Journal of Cataract and Refractive Surgery, vol. 34, no. 1, pp. 121-125. DOI: 10.1016/j.jcrs.2007.09.016

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. DOI: 10.1002/jcu.20343

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. DOI: 10.1097/ICL.0b013e318065b0dd

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, TC 2007, Ophthalmology, vol. 114, no. 7. DOI: 10.1016/j.ophtha.2007.03.012

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. DOI: 10.1097/IOP.0b013e318031d62a

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. DOI: 10.1097/ICO.0b013e31802b2e47

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. DOI: 10.1016/j.ohc.2006.07.009

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. DOI: 10.1097/01.iop.0000217704.62929.9b

Effects of maternal docosahexaenoic acid intake on visual function and neurodevelopment in breastfed term infants
Jensen, CL, Voigt, RG, Prager, TC, 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.

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. DOI: 10.1097/01.ICL.0000140907.45705.E2

Microbial contamination of immersion biometry ultrasound equipment
Velázquez-Estades, LJ, Wanger, A, Kellaway, J, Hardten, DR & Prager, TC 2005, Ophthalmology, vol. 112, no. 5. DOI: 10.1016/j.ophtha.2005.01.030

Laser in situ keratomileusis for treated anisometropic amblyopia in awake, autofixating pediatric and adolescent patients
Phillips, CB, Prager, TC, McClellan, G & Mintz-Hittner, HA 2004, Journal of Cataract and Refractive Surgery, vol. 30, no. 12, pp. 2522-2528. DOI: 10.1016/j.jcrs.2004.02.020