Eyes are not only the windows to the soul but also indicators of overall health. In modern Western medicine, the eyes are recognized for their connection to various body functions. Modern medical research shows that some eye abnormalities may signal underlying cancers.
A sudden and significant drop in vision shouldn't be simply attributed to over - use or eye fatigue. Malignant tumors such as brain tumors, lung cancers, and eye cancers could be the culprits. Brain tumors, especially those in the intracranial sella area, often press on the optic nerve, leading to vision impairment. Lung cancer that metastasizes to the brain can also affect vision. Eye cancers can directly cause vision changes and may even lead to pain by invading surrounding bones and muscles.
Yellow eyes are likely a sign of jaundice. Liver cancer, pancreatic head cancer, and bile duct cancer can block the bile ducts, causing an increase in bilirubin levels in the blood and resulting in yellowing of the skin and sclera. In the early stages of liver cancer, damaged liver cells release bilirubin into the blood, which can turn the sclera yellow. Up to 70% of pancreatic cancers occur in the head of the pancreas, easily blocking the bile duct and causing jaundice.
Dark spots in the eyes may be benign conditions like pigmented nevi or pigmented spots, but they could also be melanoma. Conjunctival nevi are common, usually due to congenital pigmentation. While most nevi remain stable, some may grow, increasing the risk of malignancy. Melanoma, a skin cancer, can also occur in the eye's choroid. If a large and fast - growing mole appears suddenly, surgical removal is recommended.
Besides hyperthyroidism, an abnormally protruding eyeball may be a sign of cranio - orbital communication tumors or orbital masses. These tumors often cause eye protrusion without significantly affecting vision or eye movement. Other cancers like hemangiomas, retinoblastomas, and metastases from lung or breast cancer can also lead to this symptom.
To protect vision, proper nutrition is essential. Two key nutrients are:
- Lutein and Zeaxanthin: They are crucial for the retina's macular area and can resist damage from blue light and UV rays. Foods rich in them include kale, spinach, and corn.
- Vitamin A and β - Carotene: Vitamin A is vital for retinal health, preventing night blindness and dry eyes. β - Carotene, a precursor of vitamin A, is found in red, yellow, and orange fruits and vegetables like carrots, beets, and tomatoes.
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