What causes double vision in the eyes?

Double vision in the eyes is usually caused by astigmatism, medication effects, macular edema, floaters, cataracts, or other reasons. It is recommended to seek medical evaluation and follow the doctor's advice for appropriate management. Specific analysis is as follows:

1. Astigmatism: Astigmatism refers to the deviation of light rays from the focal point when entering the eye. When the shape of the cornea or lens is irregular, incoming light focuses at different points, resulting in double or blurred vision. Corrective eyeglasses are recommended after medical consultation.

2. Medication effects: Certain medications or their side effects may affect visual performance, such as altering visual contrast sensitivity or light transmission, leading to blurred vision or double vision. Consult a doctor to adjust dosage or switch medications.

3. Macular edema: The macula is a part of the retina responsible for central vision. Macular edema involves fluid accumulation in the macular area, which may cause visual distortion and double vision. Treatment may include medications such as acetazolamide tablets, triamcinolone acetonide acetate injection, or dexamethasone sodium phosphate injection under medical supervision.

4. Floaters: Floaters are a natural aging phenomenon caused by vitreous degeneration, often appearing as floating spots or dark specks in the vision. In rare cases, they may lead to double vision. Treatments may include vancomycin hydrochloride for injection, choline iodide complex capsules, or ceftazidime for injection, as recommended by a physician.

5. Cataracts: A cataract occurs when the eye's lens becomes cloudy, preventing light from passing through and focusing properly on the retina. Irregular light refraction due to cataracts may result in double vision. Medications such as phaclofen eye drops, glutathione tablets, or pirenoxine eye drops may help relieve symptoms under medical guidance.

In daily life, maintaining a light diet, drinking plenty of water, and engaging in moderate exercise can help support overall health and well-being.