While partial vision loss could result from migraines, sudden, complete or near-complete vision loss is cause for alarm. In many cases, this symptom warrants a trip to the emergency room. Prompt intervention may be needed to save your eyesight, as the following dangerous conditions could be to blame.

What Can Cause You to Suddenly Have Trouble Seeing?

1. Retinal Artery Occlusion

This phenomenon occurs when a clot forms in one of the blood vessels in the eye. It may feel as if a curtain of darkness has fallen, which is clinically referred to as amaurosis fugax. Left unaddressed, the condition can cause permanent blindness. A doctor may either prescribe medicine or use an emergency treatment to reopen the blocked artery.

2. Stroke

A blocked blood vessel can also lead to stroke, which can sometimes be to blame for vision loss in one eye. Face drooping, arm weakness or numbness, and slurred speech often accompany it. The earlier you can get to the emergency room, the less brain damage the stroke may cause. 

3. Retinal Vasospasm

Blood vessel constriction in the retina can impede blood flow, causing vision loss in one eye. With treatment, sight can be restored. Migraines, high blood pressure, and plaque buildup in the veins can contribute to the condition, which can be treated with certain medications.

4. Closed-Angle Glaucoma

Fluid buildup in the eye can result in blurred vision, seeing halos, or blindness in one eye. If you experience these symptoms in addition to pain and nausea, head to the emergency room. Eye drops or pills may be prescribed to alleviate the pressure, but surgical interventions will be used if these treatments don’t work.

5. Giant Cell Arteritis

While uncommon, giant cell arteritis can cause vision loss in individuals over the age of 50. It results from inflamed artery walls in the head. In addition to vision loss, the condition is accompanied by fever, fatigue, and jaw and head pain. Corticosteroids can address the problem, but without treatment, permanent blindness can occur within a week.

Residents of the Mid-Willamette Valley area of Oregon should turn to Santiam Hospital in times of need. Featuring an emergency room staffed with expert medical professionals, this hospital has been providing prompt, high-quality patient care since 1953. Their practitioners also provide primary and specialized care. Browse through their full list of services and specialties on their website or call (503) 769-2175 to reach a staff member.