keynote address, Armaly described him as "a prolific contributor of new knowledge" who left a "scientific legacy admirable in its size, variety, and quality," concluding, "There is hardly an area in glaucoma that did not interest him and benefit from his research effort." Books Phelps CD, editor. Manual of Common Ophthalmic Surgical Procedures. New York: Churchill Livingstone, 1986. Selected papers Alward WLM, Farrell T, Hayreh S, Kolder H, Carney B, Phelps C, et al. Five-year follow-up of the fluorouracil filtering surgery study. American Journal of Ophthalmology 1996;121(4):349-366. Fluorouracil Filtering Surgery Study Group, Alward WLM, Farrell T, Hayreh S, Kolder H, Carney B, et al. Three-Year Follow-Up of the Fluorouracil Filtering Surgery Study. American Journal of Ophthalmology 1993;115(1):82-92. Phelps CD, Corbett JJ. Migraine and Low-Tensions Glaucoma: A Case-Control Study. Investigative Ophthalmology and Visual Science 1985;26(8):1105-1108. Phelps CD, Hayreh SS, Montague PR. Comparison of visual field defects in the low-tension glaucomas with those in the high-tension glaucomas. Am J Ophthalmol 1984;98(6):823-5. Lewis RA, Phelps CD. Trabeculectomy v. Thermosclerostomy. Archives of Ophthalmology 1984;102(4):533-536. Lewis RA, Hayreh SS, Phelps CD. Optic Disk and Visual Field Correlations in Primary Open-angle and Low-Tension Glaucoma. American Journal of Ophthalmology 1983;96(2):148-152. Perkins ES, Phelps CD. Open angle glaucoma, ocular hypertension, low-tension glaucoma, and refraction. Arch Ophthalmol 1982;100(9):1464-7. Blondeau P, Phelps CD. Trabeculectomy vs. Thermosclerostomy. Archives of Ophthalmology 1981;99(5):810-816. Phelps CD. The "no treatment" approach to ocular hypertension. Surv Ophthalmol 1980;25(3):175-82. Phelps CD, Armaly MF. Measurement of episcleral venous pressure. Am J Ophthalmol 1978;85(1):35-42. Hayreh SS, March W, Phelps CD. Ocular hypotony after retinal vascular occlusion. Trans Ophthalmol Soc U K 1977;97(4):756-67. Perez RN, Phelps CD, Burton TC. Angle-Closure Glaucoma Following Scleral Buckling Operations. Transactions - American Academy of Ophthalmology and Otolaryngology 1976;81:247-252. Phelps, CD. Angle-Closure Glaucoma Secondary to Ciliary Body Swelling, Archives of Ophthalmology 1974;92(4):287-290. References Mansour F. Armaly, "Keynote Address: Charles D. Phelps, M.D.: His Scientific Interests and Achievements," in Perspectives in Glaucoma: Transactions of the First Scientific Meeting of the American Glaucoma Society, ed. M. Bruce Shields, Irvin P. Pollack, and Allan E. Kolker (Thorofare, NJ: SLACK, Inc., 1988): 9-16. Frederick C. Blodi, "Charles D. Phelps, M.D.," Transactions of the American Ophthalmological Society, 84 (1986): 16-17. (Caution: while most biographical dates in this obituary are accurate, some are not.) Eric L. Greve, "In Memoriam: Charles Phelps," International Ophthalmology, 9 (1986). History of the American Glaucoma Society Obituary, Washington Post, 15 September 1985, D6. External links "Charles