The eyes are important organs that help us see things around us. Various symptoms that occur with the eyes, including eye pain on one side, may be a sign of certain health problems.

Pain in one eyeball can be cause by many things, such as:
- Causes come from the eyes, such as eye muscle fatigue from working hard, using your eyes a lot, or staring at a screen for a long time. Symptoms are usually temporary. They will get better when you rest your eyes.
- Eye pain from abnormal vision, such as nearsightedness or farsightedness, or astigmatism, which will require you to squint your eyes a lot to adjust your vision to be clearer, which can cause eye pain.
- Eye pain from high eye pressure, such as glaucoma, can cause eye pain. You may also experience blurred vision or red, inflamed eyes.
- Other causes such as sinusitis or rhinosinusitis can also cause pain around the eyeball. Patients often have other symptoms such as nasal congestion, สมัคร ufabet, foul-smelling nasal discharge, pain from the nasal cavity to the eyeball, etc.
- Causes from the brain, such as migraines, symptoms include a unilateral headache, radiating to the eye socket, and may or may not see an aura. Nausea and vomiting are often triggered by factors such as exposure to strong sunlight, extreme heat, high stress, and insufficient rest, which can trigger migraine symptoms.
- Brain tumors can cause a unilateral headache along with eye pain. There is often a lot of vomiting, like projectile vomiting due to high intracranial pressure, without other triggering factors.
Monocular pain may improve on its own over time. There are several ways to deal with monocular pain, such as:
- Blink your eyes several times to help dislodge the foreign object.
- Flush the eyes with saline, clean water or eye wash to flush out foreign objects from the eyes.
- Use artificial tears to moisturize your eyes and reduce irritation from health problems such as dry eyes, allergies, or pink eye.
- Avoid wearing contact lenses while experiencing pain in one eye and temporarily switch to wearing glasses until the pain improves.
- Avoid rubbing your eyes, picking at them, or trying to remove foreign objects from your eyes yourself, as this can further damage your eyes and worsen the pain.
- Applying a warm compress to the eye area may help relieve eye pain and may also help reduce the blockage of the oil glands in the eyelids that cause eye pain.
It is recommend to get enough sleep and avoid using your eyes continuously for a long time. Initially, you can go to an eyeglasses shop to check if your vision is abnormal or not. You can take painkillers to relieve the symptoms.