Yes, studies suggest green tea can temporarily reduce intraocular pressure (IOP), potentially helping with glaucoma, due to its antioxidants like catechins that absorb into eye tissues, with effects lasting hours after consumption, though more large-scale clinical trials are needed to confirm benefits and best usage.
Green Tea. Green tea is packed with antioxidants called catechins, which help protect the eye tissues from oxidative damage. Regular consumption of tea has been associated with reduced eye pressure. Relax and enjoy a cup of green tea daily for its numerous health benefits.
Plus, studies link a diet higher in omega-3s to reduced eye pressure related to glaucoma. A study published in the British Journal of Ophthalmology found that individuals who drank at least one cup of hot tea each day had a 74% lower risk of being diagnosed with glaucoma than those who didn't drink tea.
Surgical procedures used to treat glaucoma in children include the following:
The combined results of the studies showed that green tea was effective in lowering systolic and diastolic blood pressure in individuals (MD: -2.99, 95%; CI: -3.77 to -2.22; Z = 7.57; P < . 00001; I2 = 0%, MD: -0.95, 95%; CI: -1.62 to -0.27; Z = 2.75; P = . 006; I2 = 0%).
Drinking green tea is linked to a reduced risk of clogged arteries. The link seems to be stronger in males than in females. Also, people who drink at least three cups of green tea daily might have a lower risk of death from heart disease. Cancer of the lining of the uterus (endometrial cancer).
Therefore, consumption of green or black tea can reduce blood pressure in individuals within pre-hypertensive and hypertensive ranges, although studies of longer duration and stronger methodological quality are warranted to confirm these findings.
As the disease worsens, the field of vision gradually narrows and blindness can result. However, if detected early through a comprehensive eye exam, glaucoma can usually be controlled and serious vision loss prevented.
Glaucoma can happen at any age but is more common in older adults. It is one of the leading causes of blindness for people over the age of 60. Many forms of glaucoma have no warning signs. The effect is so gradual that you may not notice a change in vision until the condition is in its later stages.
Exercises that raise the pulse by just 20-25% — that could be a brisk walk — for 20 minutes, a minimum of four times a week can lower IOP. However, the type of exercise is as important as whether you exercise because some forms of exercise can increase your eye pressure.
However, drinking green tea or its extracts in moderate doses might have beneficial effects, especially for people with high IOP, or for those who have risk factors for glaucoma development.
Heavy caffeine intake should be advised against due to its transient elevations in IOP, especially in genetically predisposed patients or those with a positive family history of glaucoma. Chronic alcohol consumption can lead to many systemic complications and increased risk of glaucoma.
To reduce eye pressure, use prescribed eye drops/medications, exercise regularly (avoiding inverted yoga poses), maintain a healthy diet with leafy greens and omega-3s, limit caffeine, manage stress, and sleep with your head slightly elevated. Lifestyle changes help, but consistent medical treatment with your eye doctor is crucial, especially for conditions like glaucoma.
According to a NIH study, women consuming fresh peaches and oranges in excess of two servings per week reduced their odds of developing glaucoma. Orange consumption led to 82% reduction in glaucoma development, while peaches served to cut this risk by 70% percent.
Its rich content of antioxidants and beneficial compounds can help combat sight loss conditions such as retinitis pigmentosa and macular degeneration, making green tea a valuable part of a diet aimed at preventing blindness. Remember, maintaining a balanced diet and a healthy lifestyle are vital for overall eye health.
“Strict adherence to medication is the single most important thing a patient with glaucoma can do to keep their vision from worsening,” Yohannan says.
Primary angle-closure glaucoma disproportionately affects Asians, with up to four times greater prevalence of normal-tension glaucoma reported compared with high-tension glaucoma.
Open-angle glaucoma — The most common form of glaucoma, this type is caused by damage to the filter in the eye's drainage canals.
But most forms of glaucoma are treatable, especially when diagnosed early. And with care and careful management, it's possible to delay — or even prevent — permanent vision loss.
There are usually no early warning symptoms of glaucoma. Over time, you may slowly lose vision, usually starting with your side (peripheral) vision. Because it happens slowly, you may not notice your vision is changing at first. But as glaucoma progresses, you may experience blurry vision or vision loss.
Gradual loss of peripheral vision, often in both eyes: This is typically the earliest sign of glaucoma. You might notice that you can't see objects out of the corner of your eye as well as you used to. Over time, this peripheral vision loss can worsen, leading to tunnel vision.
Exercises that Can Raise Eye Pressure
Exercise that involves straining or bearing down, such as weight-lifting or inverted sit-ups, has the opposite effect. Many yoga poses, those that incorporate inversion, can also have a negative effect on eye pressure.
No safety concerns have been reported for green tea consumed as a beverage by adults. However, green tea does contain caffeine. Side effects of green tea extract supplements include nausea, constipation, abdominal discomfort, and increased blood pressure.
“Green tea wins as the most healthy tea,” says Ashley Simper, the manager of dietetic services with OSF HealthCare “Drinking green tea, at least three or more cups a day, leads to health benefits when it comes to cardiovascular disease, cancer and the overall risk of mortality.”
Daily consumption of 5-6 cups of green tea could result in reductions in systolic blood pressure, total cholesterol, and LDL cholesterol. Green tea should not be recommended as a substitute for current management of patients with established hypertension or dyslipidaemia.