Four normal subjects and seven glaucomatous patients demonstrated a wide variation and lability of intraocular pressure in response to various suggestions. In general, hypnotic suggestion produced no consistent alterations in any of the subjects, even where relief of subjective symptoms was reported. A hypnotically suggested anxiety-rousing situation failed to increase intraocular pressure as expected. Strangely, a direct waking suggestion of symptomatic relief produced a lowering of tension in all the glaucomatous patients. Follow-up studies were not done.