Sudden Blurriness in Left Eye: Causes and When to Seek Help - Ophthalmology

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Sudden blurriness in the left eye?


Hello, doctor: This morning, my left eye suddenly became blurry and I couldn't see, but it cleared up immediately after I blinked.
I would like to ask what this situation might be.
I had my retina checked at a major hospital and a clinic in March and May, and the doctors said everything was fine.
The doctor at the major hospital mentioned that I have myopia-related floaters.
Do I need to go to the hospital for further examination? Thank you.

Hami Guo, 30~39 year old female. Ask Date: 2018/06/15

Dr. Chen Anping reply Ophthalmology


Hello, Miss: Regarding the issue you raised, 1.
It may be caused by dry eye syndrome.
2.
It is advisable to visit a hospital for a thorough examination.
Hualien Hospital, Ministry of Health and Welfare, cares about your health.

Reply Date: 2018/06/15

More Info


Sudden blurriness in one eye can be alarming, and it’s important to understand the potential causes and when to seek medical attention. Based on your description of experiencing a sudden foggy vision in your left eye that resolved quickly with blinking, there are several possibilities to consider.

Firstly, transient visual disturbances like the one you experienced can sometimes be attributed to benign conditions. One common cause is a phenomenon known as "visual snow" or "visual aura," which can occur without any underlying pathology. This can happen due to temporary changes in the eye's focus or even due to fatigue or dryness. If your vision returned to normal after blinking, it might suggest that the issue was related to a temporary disruption in the tear film or a brief episode of visual fatigue.

Another possibility is related to the vitreous humor, the gel-like substance in the eye. As we age or due to certain conditions, the vitreous can become more liquid and may pull away from the retina, leading to symptoms such as floaters or transient blurriness. This is often benign, especially if you have been previously evaluated for retinal issues and no problems were found.

However, it is crucial to consider more serious conditions that could cause sudden blurriness. For instance, conditions such as retinal detachment, macular degeneration, or even transient ischemic attacks (TIAs) can present with sudden changes in vision. Although you mentioned that you have had your retina checked and no issues were found, it is essential to remain vigilant, especially if you experience recurrent symptoms.

In your case, since you have a history of myopia (nearsightedness) and have been diagnosed with floaters, it is possible that these factors could contribute to your visual disturbances. Myopia can lead to changes in the vitreous and retina, which may explain the transient blurriness. However, if you notice any additional symptoms such as persistent blurriness, flashes of light, or a sudden increase in floaters, it is imperative to seek immediate medical attention.

Given that you have already consulted with healthcare professionals and received a clean bill of health regarding your retina, it may not be necessary to seek further evaluation unless your symptoms change or worsen. However, if you continue to experience episodes of blurriness or if they become more frequent, it would be wise to return to your eye care provider for a thorough examination. They may consider additional tests, such as optical coherence tomography (OCT) or a more detailed visual field test, to rule out any underlying issues.

In summary, while transient blurriness that resolves quickly can often be benign, it is essential to monitor your symptoms closely. If you experience any changes in your vision, especially if they are sudden or accompanied by other symptoms, do not hesitate to seek medical advice. Regular eye exams and open communication with your healthcare provider are key to maintaining your eye health and addressing any concerns that may arise.

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