Some choices. Do not overdrink liquids this can elevate eye pressure in extremes. Doing upside down exercizes can increase eye pressure just by adding the hydrostatic pressure of the blood column. One should treat sleep apnea if that is a problem. If blood pressure is high lowering should be done carefully in glaucoma prone patients as rapid lowering can cause damage to the nerve.
Healthy habits. Actually lowering the eye pressure will require medical treatments such as eye drops and/or various types of surgery. No smoking - smoking can result in potential nerve injury. Eating a balanced diet and exercise can lower the risks of high blood pressure and diabetes which may contribute to glaucoma progression.