Overusing the brain causes eye discomfort.

Generally, eye discomfort caused by excessive mental exertion may result from physiological factors or medical conditions such as neurasthenia and cervical spondylosis. Treatment depends on the specific underlying cause and may involve medication. The details are as follows:

1. Physiological Factors

If the eyes are focused for prolonged periods on electronic devices such as smartphones or computers during mental work, it may lead to eye discomfort including a sensation of swelling or soreness. These symptoms typically resolve with rest and do not accompany other abnormalities. This is usually considered normal and does not require special treatment.

2. Disease-Related Factors

1) Neurasthenia

This condition is often associated with chronic mental stress and excessive pressure. Patients may experience sleep disturbances, cerebral discomfort, and are prone to eye soreness and pain. Under a doctor's guidance, patients can take medications such as Anshen Bunaoye (a calming and brain-tonifying liquid) or Gweidin tablets (Oryzanol) to alleviate symptoms.

2) Cervical Spondylosis

In patients with cervical spondylosis, nerves supplying the brain and eyes may be compressed or irritated, leading to eye discomfort after excessive mental activity, along with symptoms such as headache, head fullness, and numbness in the upper limbs. Patients should take medications such as Mecobalamin tablets or Maizhiling tablets under medical supervision.

Besides the common causes mentioned above, other potential factors include hypertension, cerebrovascular abnormalities, or intracranial tumors. Patients should seek timely medical evaluation and treatment to avoid delays in diagnosis and management.