Hello, Diplopia, or double vision, can be caused by a variety of factors in the elderly, including: * Aging: As people age, their eye muscles may become weaker, causing them to have difficulty aligning their eyes and leading to double vision. * Eye muscle weakness or paralysis: Conditions such as myasthenia gravis, thyroid eye disease, or a stroke can weaken or paralyze the muscles that control eye movement, leading to double vision. * Cataracts: Cataracts are a clouding of the eye s natural lens and can cause double vision in one eye. * Diabetes: Diabetes can cause nerve damage, including to the nerves that control eye movements, leading to double vision. * Neurological conditions: Parkinson s disease, multiple sclerosis, and other neurological conditions can cause double vision as a result of nerve damage or muscle weakness. * Trauma: Head injuries or trauma to the eye or eye muscles can cause double vision. * Medications: Certain medications can cause double vision as a side effect. It s important to see a healthcare provider if you experience double vision, especially if it s sudden or accompanied by other symptoms. Treatment for double vision will depend on the underlying cause. In your case it looks like due to aging. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. H. Kay, General & Family Physician