A. Tim Johnson, MD, PhD

Director, Comprehensive Ophthalmology Clinic
Clinical Professor of Ophthalmology and Visual Sciences

Contact Information

Primary Office
11190D PFP
Iowa City, IA 52242


BA, Chemistry/Mathematics, Hastings College
MD, MD/PhD program, Baylor College of Medicine
PhD, Medicine, Baylor College of Medicine
Internship, Transitional, Baylor College of Medicine
Resident, Ophthalmology, University of Iowa Hospitals & Clinics
Fellow, Glaucoma, University of Iowa
Fellow, Glaucoma, University of Michigan

Licensure and Certifications

ABO Certification - American Board of Ophthalmology
Michigan Medical License - Michigan Board of Medicine
Texas Medical License - Texas Board of Medical Examiners


Greenwald, M. F., Niles, P. I., Johnson, A. T., Vislisel, J. M. & Greiner, M. A. (2018). Descemet membrane endothelial keratoplasty for corneal decompensation due to iridoschisis. American Journal of Ophthalmology Case Reports, 9(March 2018), 34-37. PMID: 29468215.

Johnson, C. A. (2014). Detecting functional changes in the patient's vision: visual field analysis. In J. R. Samples , P. N. Schacknow (Eds.) Clinical Glaucoma Care: The Essentials. pp. 117-59. New York: Springer.

Longmuir, S., Titler, S., Johnson, T. & Kitzmann, A. S. (2013). Nd:YAG laser capsulotomy under general anesthesia in the sitting position. J AAPOS, 17(4), 417-419. PMID: 23896364.

Strauss, R. G., Johnson, A. (2011). Cataracts and corticosteroids in granulocyte donors. Transfusion, 51(5), 904-907. PMID: 21545589.

Rogers, G. M., Oetting, T. A., Lee, A. G., Grignon, C., Greenlee, E., Johnson, A., Beaver, H. A. & Carter, K. (2009). Impact of a structured surgical curriculum on ophthalmic resident cataract surgery complication rates. J Cataract Refract Surg, 35(11), 1956-60. PMID: 19878829.

Lee, A. G., Golnik, K. C., Oetting, T. A., Beaver, H. A., Boldt, H. C., Olson, R., Greenlee, E., Abramoff, M. D., Johnson, A. & Carter, K. (2008). Re-engineering the resident applicant selection process in ophthalmology: a literature review and recommendations for improvement. Surv Ophthalmol, 53(2), 164-76. PMID: 18348881.

Abramoff, M. D., Folk, J. C., Lee, A. G., Boldt, H. C., Beaver, H. A., Greenlee, E., Johnson, A., Olson, R., Carter, K. & Oetting, T. A. (2008). Teaching and assessing competency in retinal lasers in ophthalmology residency. Ophthalmic Surgery, Lasers & Imaging: The Official Journal of the International Society for Imaging in the Eye, 39(4), 270-280. PMID: 18717431.

Lee, A. G., Greenlee, E., Oetting, T. A., Beaver, H. A., Johnson, A., Boldt, H. C., Abramoff, M., Olson, R. & Carter, K. D. (2007). The Iowa Ophthalmology Wet Laboratory Curriculum for Teaching and Assessing Cataract Surgical Competency. Ophthalmology, 114(7), e21-6. PMID: 17475332.

Oetting, T. A., Beaver, H. A. & Johnson, A. (2007). IOL Design, Material, and Delivery. In Essentials of Cataract Surgery. pp. 133-146. Thorofare: SLACK Publishers.

Ayala-Lugo, R. M., Pawar, H., Reed, E. M., Lichter, P. R., Moroi, S. E., Page, M., Eadie, J., Azocar, V., Maul, E., Ntim-Amponasah, C., Bromley, W., Obeng-Nyarkoh, E., Johnson, A., Kijek, T. G., Downs, C. A., Johnson, J. M., Perez-Grossmann, R. A., Guevara-Fujita, M. L., Fujita, R., Wallace, M. R. & Richards, J. E. (2007). Variation in optineurin (OPTN) allele frequencies between and within populations. Molecular Vision, 2(3), 151-163. PMID: 17293779.

Oetting, T. A., Lee, A. G., Beaver, H. A., Johnson, A., Boldt, H. C., Olson, R. & Carter, K. (2006). Teaching and assessing surgical competency in ophthalmology training programs. Ophthalmic Surg Lasers Imaging, 37(5), 384-93. PMID: 17017198.

Price, F. W., Mackool, R. J., Miller, K. M., Koch, P., Oetting, T. A. & Johnson, A. (2005). Interim results of the United States investigational device study of the Ophtec capsular tension ring. Ophthalmology, 112(3), 460-5. PMID: 15745774.

Alward, W. L., Kwon, Y. H., Kawase, K., Craig, J. E., Hayreh, S. S., Johnson, A., Khanna, C. L., Yamamoto, T., Mackey, D. A., Roos, B. R., Affatigato, L. M., Sheffield, V. C. & Stone, E. M. (2003). Evaluation of optineurin sequence variation in 1048 individuals with open angle glaucoma. American Journal of Ophthalmology, 136, 904-910. PMID: 14597044.

Kass, M. A., Heuer, D. K., Higginbotham, E. J., Johnson, C. A., Keltner, J. L., Miller, J. P., Parrish, R. K., Wilson, M. R., Gordon, M. O. & Johnson, A. (2002). The Ocular Hypertension Treatment Study. A randomized trial determines that topical ocular hypotensive medicatin delays or prevents the onset of primary open-angle glaucoma. Archives of Ophthalmology, 120, 701-713. PMID: 12049574.

Alward, W. L., Kwon, Y. H., Khanna, C. L. & Johnson, A. (2002). Variations in the myocilin gene in patients with open-angle glaucoma. Archives of Ophthalmology, 120, 1189-1205. PMID: 12215093.

Shimizu, S., Lichter, P. R., Johnson, A., Zhou, Z., Higashi, M., Gottfredsdottir, M., Othman, M., Moroi, S., Schertzer, R. M., Clarke, M. S., Schwartz, A. L., Downs, C. A., Vollrath, D. & Richards, J. E. (2000). Age-dependent prevalence of mutations at the GLC1A locus in primary open-angle glaucoma. American Journal of Ophthalmology, 130(2), 165-177. PMID: 11004290.

Alward, W. L., Fingert, J. H., Kwon, Y. H., Johnson, A., Hayreh, S. S., Sheffield, V. C. & Stone, E. M. (2000). Characterization of a large family with adult-onset primary open-angle glaucoma caused by a mutation in the GLC1A gene. In G. K. Krieglstein (Eds.) Glaucoma Update VI. pp. Chapter 7. Berlin: Springer-Verlag.

Charukamnoetkanok, P., Johnson, A. & Boldt, H. C. (2000). Purtscher's-like retinopathy associated with acute pancreatitis. Middle East Journal of Ophthalmology, 8(1), 52-54.

Alward, W. L., Fingert, J. H., Coote, M. A., Johnson, A., Lerner, S. F., Junqua, D., Durcan, F. J., McCartney, P. J., Mackey, D. A., Sheffield, V. C. & Stone, E. M. (1998). Clinical features associated with mutations in the chromosome 1 open-angle glaucoma gene (GLC1A). New England Journal of Medicine, 15, 1022-1027. PMID: 9535666.

Rozsa, F., Othman, M. I., Shimizu, S., Lichter, P. R., Johnson, A., Scott, K., Nguyen, T. D., Polansky, J. R. & Richards, J. E. (1998). GLC1A mutations point to regions of potential functional importance on the TIGR/MYOC protein. Molecular Vision, 4, 20. PMID: 9772276.

Johnson, A., Richards, J. E., Boehnke, M., Stringham, H. M., Herman, S. B., Wong, D. J. & Lichter, P. R. (1996). Clinical phenotype of juvenile-onset primary open-angle glaucoma linked to chromosome 1q. Ophthalmology, 103, 808-814. PMID: 8637692.

Lee, P. P., Hilborne, L., McDonald, L., Tobacman, J. K., Kolder, H. E., Johnson, A. & Brook, R. H. (1996). Documentation patterns before cataract surgery at ten academic centers. Ophthalmology, 103, 1179-1183. PMID: 8764784.

Johnson, A., Alward, W. L., Sheffield, V. C., Stone, E. M., Ritch, R., Shields, M. B. & Krupin, T. (1996). Genetics and glaucoma. In The Glaucomas. pp. 39-54. St. Louis: Mosby Year Book.

Johnson, A., Lichter, P. R., Tasman, W. & Jaeger, E. A. (1996). Gonioscopy. In Duane's Clinical Ophthalomology 3. pp. Chapter 4. Philadelphia: Lippincott.

Camras, C. B., Alm, A., Watson, P., Stjernschantz, J. & Johnson, A. (1996). Latanoprost, a prostaglandin analog, for glaucoma therapy. Ophthalmology, 103, 1916-1924. PMID: 8942890.

Alward, W. L., Johnson, A., Nishimura, D. Y., Sheffield, V. C. & Stone, E. M. (1996). Molecular genetics of glaucoma. Journal of Glaucoma, 5, 276-284.

Alward, W. L., Johnson, A., Nishimura, D. Y., Sheffield, V. C. & Stone, E. M. (1996). Molecular genetics of glaucoma: Current status. Journal of Glaucoma, 5, 276-284. PMID: 8795774.

Richards, J. E., Lichter, P. R., Herman, S., Hauser, E. R., Hou, Y. C., Johnson, A. & Boehnke, M. (1996). Probable exclusion of GLC1A as a candidate glaucoma gene in a family with middle-age-onset primary open-angle glaucoma. Ophthalmology, 103, 1035-1040. PMID: 8684791.

Haynes, W. L., Thompson, H. S., Johnson, A. & Alward, W. L. (1995). Comparison of the miotic effects of dapiprazole and dilute Pilocarpine in patients with the pigment dispersion syndrome. Journal of Glaucoma, 4(6), 379-385. PMID: 19920703.

Johnson, A., Richards, J. E., Lichter, P. R. & Krieglstein, G. K. (1995). Genetic Testing in Glaucoma. In Glaucoma Update V. pp. 1-6. Berlin: Springer-Verlag.

Katz, G. J., Higginbotham, E. J., Lichter, P. R., Skuta, G. L., Musch, D. C., Bergstrom, T. J. & Johnson, A. (1995). Mitomycin-C versus 5-fluorouracil in high-risk glaucoma filtering sugery. Ophthalmology, 102(9), 1263-1269. PMID: 9097762.

Richards, J. E., Lichter, P. R., Boehnke, M. L., Uro, J., Torrez, D., Wong, D. & Johnson, A. (1994). Mapping of a gene for autosomal dominant juvenile-onset primary open-angle glaucoma to chromosome 1q. American Journal of Human Genetics, 54, 62-70. PMID: 8279471.

Johnson, A. (1994). Advanced Glaucoma Intervention Study. 2. Visual field test scoring and reliability. Ophthalmology, 101, 1445-1455. PMID: 7741836.

Sheffield, V. C., Stone, E. M., Alward, W. L., Drack, A. V., Johnson, A., Streb, L. M. & Nichols, B. E. (1993). Genetic linkage of familial open angle glaucoma to chromosome 1q21-q31. Nat Genet, 4(1), 47-50. PMID: 8513321.

Carlson, D. W., Johnson, A. & Alward, W. L. (1993). A placebo for mitomycin C. Ophthalmology, 100, 292. PMID: 8459992.

Johnson, A., Stone, E. M., Kwitek, A. E., Drack, A. V., Cannon, R. L. & Alward, W. L. (1993). Clinical features of linkage analysis of a family with autosomal dominant juvenile glaucoma. Ophthalmology, 100, 524. PMID: 8479711.

Haynes, W. L., Johnson, A. & Alward, W. L. (1992). Effects of jogging exercise on patients with the pigmentary dispersion syndrome and pigmentary glaucoma. Ophthalmology, 99, 1096. PMID: 1495789.

Haynes, W. L., Johnson, A. & Alward, W. L. (1990). Inhibition of exercise-induced pigment dispersion in a patient with the pigmentary dispersion syndrome. American Journal of Ophthalmology, 109, 601. PMID: 2139759.

Johnson, A., Folberg, R., Vrabec, M. P., Florakis, G. J., Stone, E. M. & Krachmer, J. H. (1989). The pathology of posterior amorphous corneal dystrophy. Ophthalmology, 97, 104-109. PMID: 2314832.

Johnson, A., Kretzer, F. L., Hittner, H. M., Glazebrook, P. A., Bridges, C. D. & Lam, D. M. (1985). Development of the subretinal space in the preterm human eye: ultrastructural and immunocytochemical studies. Journal of Comparative Neurology, 233, 497-505. PMID: 3884672.

Johnson, A., Kretzer, F. L., Bridges, C. D. & Adler, A. J. (1985). Interstitial retinol binding protein in the developing human retina: a proposed explanation for vitamin E suppression of retinopathy of prematurity. In The Interphotoreceptor Matrix in Health and Disease. pp. 251-277. New York: Alan R. Liss.

Kretzer, F. L., Mehta, R. S., Johnson, A., Hunter, D. G., Brown, D. G. & Hittner, H. M. (1984). Vitamin E protects against retinopathy of prematurity through action on spindle cells. Nature, 309, 793-795. PMID: 6738695.

Kretzer, F. L., Hittner, H. M., Hunter, D. G., Mehta, R. S., Brown, E. S., Bliefeld, C., Johnson, A., Coates, P. W., Markwald, R. R. & Kenny, A. D. (1983). Spindle cells as vasoformative elements in the developing human retina: vitamin E Modulation. In Trends in Developing and Regenerating Nervous Systems. pp. 199-210. New York: Alan R. Liss.

Kretzer, F. L., Hittner, H. M., Johnson, A., Mehta, R. S. & Godio, L. B. (1982). Vitamin E and retrolental fibroplasia: ultrastructural support of clinical efficacy. Annals of the New York Academy of Sciences, 393, 145-166. PMID: 6959556.