Kass MA, Heuer DK, Higginbotham EJ, Johnson CA, Keltner JL, Miler JP, Parrish II RK, Wilson MR, Gordon MO, for the Ocular Hypertension Treatment Study Group: The Ocular Hypertension Treatment Study: A Randomized Trial Determines that Topical Ocular Hypotensive Medication Delays or Prevents the Onset of Primary Open-Angle Glaucoma. Arch Ophthalmol 120: 701-713, 2002.

Gordon MO, Beiser JA, Brandt JD, Heuer DK, Higginbotham EJ, Johnson CA, Keltner JL, Miller JP, Parrish II RK, Wilson MR, Kass MA, for the Ocular Hypertension Treatment Study Group: The Ocular Hypertension Treatment Study: Baseline Factors that Predict the Onset of Primary Open-Angle Glaucoma. Arch Ophthalmol 120: 714-720, 2002.