Blurry vision in one eye

Cataracts

The lens inside your eye becomes cloudy, scattering light. This causes gradual blurring, dimming, and glare, which may affect one eye more than the other initially.

Astigmatism

Your cornea or lens isn't perfectly round, so light bends unevenly. This causes blurred or distorted vision at all distances in the affected eye.

Dry eye syndrome

Your eyes don't produce enough quality tears to lubricate properly. This could cause fluctuating blurry vision, especially after prolonged screen use or in dry environments.

Optic neuritis

Inflammation of your optic nerve, which transmits visual information to your brain. This often causes pain with eye movement and blurry vision, typically in one eye.

Macular degeneration

Damage to the macula, the central part of your retina. This causes blurred or reduced central vision, making it hard to see fine details, and could start in one eye.

Glaucoma (acute angle-closure)

Sudden blockage of fluid drainage in your eye causes rapid pressure buildup. This leads to severe eye pain, redness, nausea, and sudden blurry vision in the affected eye.

Retinal detachment

The retina pulls away from the back of your eye, disrupting vision. You might see sudden floaters, flashes, or a dark curtain obscuring your vision in one eye.

Corneal ulcer

An open sore on your cornea, usually from infection or injury. It causes pain, redness, light sensitivity, and significant blurring in the affected eye.

Migraine aura

Visual disturbances like flashing lights, blind spots, or blurry vision that could occur before or during a migraine. This often affects one side of your visual field.