The natural course of ocular pressure in ocular hypertension

The intraocular pressures of ocular hypertensives may undergo diurnal variation and/or slow cyclic variations over years. Studies of both types of variations are reviewed. Pressure tends to decrease cyclically in some ocular hypertensives and to increase in others. It is possible that an increasing pressure trend may be an important symptom indicating a higher risk of development of glaucomatous damage.