My wife tends to have high pressure in her eyes. We keep it in check with Rutin. Very inexpensive. Truly works.
Some information about rutin:
1. Rutin (a bioflavonoid)
This special bioflavonoid is not found in other grains such as rice, wheat, etc. or beans, but is contained in great quantity (4-6%) in buckwheat. Rutin is important because it strengthens capillaries and so helps people suffering from arteriosclerosis (the hardening of the arteries) or high blood pressure. Rutin belongs to a group of plant compounds called bioflavonoids that also include the important catechins of green tea and the polyphenols of red wine. Recent studies have shown that the bioflavonoids are powerful antioxidants that fight free radicals. Free radicals are said to be responsible for as much as 90 percent of all the human diseases, such as cancer, arteriosclerosis, strokes, senility due to aging, etc.
2. Vitamin P
This vitamin is similar to rutin in that it increases capillary strength. But it is important in its own right because it is necessary for the proper functioning and absorption of vitamin C. Although buckwheat is the only significant source of vitamin P, this vitamin is also contained in trace amounts in rose hips, cherries, blackberries, prunes, skin and pulp of fruits, vegetables, etc.
At the bottom I linked the google page for several sites about eye pressure and rutin.