Link Between Insufficient Cerebral Blood Flow and Eye Fatigue - Ophthalmology

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Eye fatigue


Hello, doctor.
Is there a connection between long-term insufficient cerebral blood flow and the occurrence of floaters in the eyes as well as eye fatigue?

Niming, 30~39 year old female. Ask Date: 2016/11/05

Dr. Cai Wenyuan reply Ophthalmology


Hello, there should be no problem.
Thank you.
Wishing you peace and good health.
Sincerely, Dr.
Cai Wenyuan, Director of the Department of Ophthalmology, Taoyuan General Hospital, Ministry of Health and Welfare.

Reply Date: 2016/11/05

More Info


The question regarding the potential link between insufficient cerebral blood flow and symptoms such as eye fatigue and floaters (known as "myodesopsia") is indeed a pertinent one, especially for individuals experiencing these symptoms over an extended period. While the initial response indicated that there is likely no direct connection, it is essential to delve deeper into the underlying mechanisms and possible associations.

Insufficient cerebral blood flow can lead to various neurological symptoms, including dizziness, cognitive impairment, and visual disturbances. However, the relationship between cerebral blood flow and specific ocular symptoms like floaters and eye fatigue is less straightforward. Floaters are typically caused by changes in the vitreous humor of the eye, which can occur with age or due to other factors such as inflammation or retinal detachment. They are not usually directly linked to cerebral blood flow issues.

Eye fatigue, on the other hand, can result from prolonged visual tasks, such as extensive computer use or reading, leading to a condition commonly referred to as digital eye strain or computer vision syndrome. Symptoms of eye fatigue include dryness, discomfort, blurred vision, and headaches. While insufficient blood flow to the brain might contribute to overall fatigue and cognitive difficulties, it is not a recognized direct cause of eye fatigue.

In patients with chronic conditions that affect cerebral circulation, such as atherosclerosis or other vascular diseases, there may be a broader impact on overall health, including visual health. For instance, reduced blood flow could potentially exacerbate pre-existing eye conditions or contribute to systemic fatigue, which might indirectly affect visual comfort and clarity. However, this is more about the interplay of various health factors rather than a direct causative relationship.

Moreover, it is essential to consider other potential causes of eye fatigue and floaters. Stress, lack of sleep, and poor lighting conditions can all contribute to eye strain. Additionally, underlying health issues such as hypertension or diabetes can affect both cerebral and ocular health, leading to a range of symptoms that may overlap.

If you are experiencing persistent symptoms of eye fatigue and floaters, it is advisable to consult with both an ophthalmologist and a neurologist. An ophthalmologist can evaluate your eye health, looking for any retinal issues or other ocular conditions that may be causing your symptoms. A neurologist can assess your cerebral blood flow and overall neurological health, ensuring that there are no underlying conditions that need to be addressed.

In conclusion, while there may not be a direct link between insufficient cerebral blood flow and eye fatigue or floaters, the overall health of the vascular system can influence various bodily functions, including those of the eyes. It is crucial to approach this issue holistically, considering all potential factors and seeking appropriate medical advice to ensure comprehensive care.

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