What Causes Blurred Vision?

Blurred vision is a common issue that many people experience at some point in their lives. It can range from a mild inconvenience to a symptom of a more serious condition. Understanding the potential causes of blurred vision can help you take the necessary steps to address the problem.

Refractive Errors

One of the most common causes of blurred vision is a refractive error. This includes:
 

• Nearsightedness (Myopia): Objects up close appear clear, while distant objects appear blurry.
   

• Farsightedness (Hyperopia): Distant objects appear clear, while those up close are blurry.
   

• Astigmatism: Vision may be blurred or distorted due to an irregularly shaped cornea.
   

• Presbyopia: An age-related condition where near vision becomes blurry, typically starting around age 40.
   

In most cases, these refractive errors can be corrected with prescription glasses, contact lenses, or refractive surgery.
 

Dry Eye Syndrome

If your eyes do not produce enough tears or the tears evaporate too quickly, it can lead to dry eye syndrome. Dry eyes can cause discomfort, irritation, and blurred vision. This condition can be triggered by factors such as screen time, certain medications, or environmental conditions. Treatments like artificial tears, prescription eye drops, or advanced therapies such as intense pulsed light (IPL) can help manage dry eye and restore clear vision.
 

Eye Strain

In today's digital world, eye strain, also known as computer vision syndrome, is a frequent cause of blurred vision. Prolonged screen use, reading in dim light, or focusing on a task for an extended period can overwork your eyes, leading to temporary blurriness, headaches, and discomfort. Taking regular breaks (following the 20-20-20 rule: every 20 minutes, look at something 20 feet away for 20 seconds) can help reduce eye strain.
 

Cataracts

Cataracts are a clouding of the eye’s natural lens, typically developing with age. This clouding can lead to blurred or dim vision, sensitivity to light, and difficulty seeing at night. Cataracts are one of the leading causes of vision problems in older adults, and they can usually be treated effectively with cataract surgery, where the cloudy lens is replaced with a clear artificial one.
 

Glaucoma

Glaucoma is an eye condition that damages the optic nerve, often due to increased pressure in the eye. Blurred vision, particularly peripheral vision, can be an early sign of glaucoma. Because glaucoma can progress without noticeable symptoms, regular eye exams are crucial for early detection and treatment to prevent vision loss.
 

Diabetic Retinopathy

For individuals with diabetes, high blood sugar levels can damage the blood vessels in the retina, leading to a condition known as diabetic retinopathy. This condition may cause blurred vision, floaters, or even permanent vision loss if left untreated. Managing blood sugar levels and regular eye exams can help detect diabetic retinopathy early and prevent further damage.
 

Age-Related Macular Degeneration (AMD)

AMD is a condition that affects the central part of the retina (the macula) and is one of the leading causes of vision loss in older adults. Early signs of AMD include blurred vision or difficulty seeing fine details, especially in the center of your visual field. Regular eye exams are crucial for detecting AMD early and managing it to slow progression.
 

Contact Lens Issues

Improper contact lens wear, including wearing lenses longer than recommended or not cleaning them properly, can cause blurred vision. It’s essential to follow your optometrist’s guidelines for contact lens care to avoid infections, dryness, and discomfort that may blur your vision.
 

When to See an Optometrist

If you experience sudden or persistent blurred vision, it’s essential to schedule an appointment with your optometrist. At Beach Cities Optometry, we are dedicated to helping you maintain clear, healthy vision. Whether you need a comprehensive eye exam or treatment for an underlying condition, we are here to provide expert care tailored to your needs. 
 

If you are experiencing blurred vision, schedule an appointment with Beach Cities Optometry to get your vision back on track. Contact our office in Manhattan Beach, California, by calling (310) 906-4426 to book an appointment today.