The occurrence of red eye symptoms (e.g. as in subconjunctival hemorrhage) often indicates high blood pressure. Most common causes for poor blood circulation are free radical damage to the circulatory system, lack of healthy nutrition (deficiency of vitamins, minerals, aminos acids and essential fatty acids) and acid toxins within the body. As a result the veins, arteries and capillaries will not be able to cope and may cause poor blood circulation. Medicines and supplements that may increase the risk of a subconjunctival hemorrhage are : Blood-thinning medications, such as warfarin and aspirin, Ginseng, Ginkgo, Garlic,Ginger,St. John's wort, Cayenne.

You may improve your blood circulation in many ways :

do not smoke, the nicotine causes your blood vessels to constrict and your heart to beat faster, and this raises your blood pressure. Most people breathe improperly by using only the upper portion of lungs; Hydrotherapy (hot and cold shower) may help to improve blood circulation. Avoid stressful situations. Regular exercise will have positive results on your blood flow. Choose a diet that includes lots of fruits and vegetables and is low in fat. Reduce proteins and saturated fats (found in red meat, cheese and cream). Effective circulation boosting foods are pumpkin seeds , oranges, nuts, watermelon, garlic.

Improving sleep may also help to improve blood circulation, here are some tips to improve your sleep : Avoid large meals before bedtime, or going to bed feeling hungry. Avoid sources of caffeine such as cigarettes, alcohol, coffee, chocolate, fizzy drinks non-herbal teas (Caffeine takes 8 hours to metabolize). Sleep is often disturbed in smokers and those who withdraw from heavy nicotine use. Although alcohol helps to fall asleep but the sleep will be very poor quality & fragmented. Regular exercise improves your sleep (although do not exercise close to bed time). Go to bed as early as possible and create a pattern of going to bed and waking up at the same time.