Blurred vision can be the sign of multiple diagnoses.
Difficulty focusing on objects that are close. Common in the elderly. (Accommodation tends to decrease with age.)
Cloudiness in the eye's lens, causing poor night-time vision, halos around lights, and sensitivity to glare. Daytime vision is eventually affected. Common in the elderly.
Increased pressure in the eye, causing poor peripheral vision, blind spots, and loss of vision to either side. A major cause of blindness. Glaucoma can happen gradually or suddenly—if sudden, it is a medical emergency.
This complication of diabetes can lead to bleeding into the retina. Another common cause of blindness.
Loss of central vision, blurred vision (especially while reading), distorted vision (like seeing wavy lines), and colors appearing faded. The most common cause of blindness in people over age 60.
Eye infection, inflammation, or injury.
Tiny particles drifting across the eye. Although often brief and harmless, they may be a sign of retinal detachment.
Symptoms include floaters, flashes of light across your visual field, or a sensation of a shade or curtain hanging on one side of your visual field. A retinal detachment is considered a medical emergency, and patients should seek immediate care.
Inflammation of the optic nerve from infection or multiple sclerosis. You may have pain when you move your eye or touch it through the eyelid.
Stroke or Transient ischemic attack
Bleeding into the eye
Inflammation of many of the arteries supplying the head and eyes. Often accompanied by severe headache, fever, weight loss, stroke and heart attack. Eye involvement includes sudden vision loss and optic nerve inflammation, double vision, and droopy lids. Temporal arteritis usually affects people over 60 years of age.
Spots of light, halos, or zigzag patterns are common symptoms prior to the start of the headache. An ophthalmic migraine is when you have only visual symptoms without a headache.