What causes blurry vision in one eye?

Experiencing blurry vision in one eye can be concerning and may impact your daily activities. There are several potential causes for this condition, and understanding them can help you identify the underlying issue and seek appropriate treatment. In this article, we will explore common factors that can lead to blurry vision in one eye.

  1. Refractive Errors: Refractive errors, such as nearsightedness (myopia), farsightedness (hyperopia), and astigmatism, can cause blurry vision in one or both eyes. These conditions occur when the shape of the eye prevents light from focusing correctly on the retina. Blurry vision in one eye may suggest a significant difference in prescription between the eyes or an irregularity in the cornea.
  2. Dry Eye Syndrome: Insufficient tear production or poor tear quality can result in dry eye syndrome. This condition can cause discomfort, redness, and blurry vision, especially when focusing on objects for an extended period. One eye may be more affected than the other, leading to blurry vision in that eye.
  3. Eye Infections and Inflammation: Infections such as conjunctivitis (pink eye) or uveitis (inflammation of the uvea) can cause blurred vision in one eye. These conditions often come with additional symptoms such as redness, itching, discharge, and sensitivity to light.
  4. Eye Injuries: Trauma or injury to the eye can result in blurry vision. If one eye has been affected, it is possible that the injury has damaged the cornea, lens, or retina, leading to vision disturbances.
  5. Cataracts: Cataracts occur when the lens of the eye becomes cloudy, leading to blurred vision. While cataracts typically affect both eyes, they can develop at different rates. If one eye has a more advanced cataract, it may cause blurry vision in that eye.
  6. Eye Conditions and Diseases: Certain eye conditions and diseases, such as glaucoma, macular degeneration, and diabetic retinopathy, can cause blurry vision, particularly in one eye. These conditions often have other associated symptoms, including vision loss, distortion, or blind spots.
  7. Neurological Causes: In some cases, blurry vision in one eye may be a result of neurological issues. Conditions such as optic neuritis, migraine aura, or stroke affecting the visual pathways can lead to vision disturbances.

It is important to note that this article provides general information and should not replace professional medical advice. If you experience persistent or worsening blurry vision in one eye, it is essential to consult an eye care professional for a comprehensive evaluation. They can assess your symptoms, perform necessary tests, and determine the underlying cause, guiding you towards appropriate treatment options.


In addition to taking care of your eye health, incorporating certain habits and using helpful tools can further support your vision. Consider using blue light filters for your electronic devices. These filters can help reduce the amount of blue light emitted by your computer, smartphone, or tablet screens, which may contribute to eye strain and disrupted sleep patterns. By applying a blue light filter, you can minimize the potential impact of blue light on your eyes and promote more comfortable screen viewing. Various software applications and screen protectors offer blue light filter features that are easy to install and customize. Protect your eyes and enhance your digital experience with the use of blue light filters.

Remember, while blue light filters can provide relief from eye strain, it is essential to maintain a balanced approach to eye care. Practicing regular eye exercises, taking breaks from screen time, and maintaining proper lighting conditions in your workspace are equally important steps to minimize eye strain and maintain healthy vision.






- American Academy of Ophthalmology

- Mayo Clinic

- National Eye Institute

- Cleveland Clinic