What causes the feeling of eye pressure or fullness?

A sensation of eye fullness or pressure may be caused by physiological factors, or it could result from pathological conditions such as keratitis or glaucoma.

I. Physiological Factors

Prolonged use of electronic devices like computers and smartphones, frequent lack of sleep, or eye strain can lead to ciliary muscle spasm, causing a feeling of eye fullness. This can be improved through adequate rest or applying warm compresses to the eyes.

II. Pathological Factors

1. Keratitis

When pathogens such as fungi, viruses, or bacteria infect the cornea, an inflammatory response (keratitis) occurs, and the inflammation irritates the cornea, leading to discomfort. It is recommended to use medications such as levofloxacin eye drops, olopatadine hydrochloride eye drops, or tobramycin eye drops under medical supervision to control inflammation and relieve symptoms.

2. Glaucoma

During an episode, increased intraocular pressure causes the eyeball wall to expand, stimulating the trigeminal nerve and ciliary ganglion, resulting in a sensation of eye fullness. It is recommended to use medications such as carteolol hydrochloride eye drops, pilocarpine nitrate eye drops, or timolol maleate eye drops under medical guidance to reduce intraocular pressure and alleviate symptoms.

In addition, patients with hyperthyroidism may also experience a sensation of eye fullness or discomfort. It is advisable to visit a hospital for appropriate examinations to determine the exact underlying cause.