Pressing on the eyeball feels swollen and painful in the left eye.

Under normal circumstances, feeling a sensation of pressure or pain in the left eye when pressing on it with fingers may be caused by excessive force, eye fatigue, blepharitis, keratitis, glaucoma, or other reasons, and targeted measures should be taken accordingly. If any of the above conditions are present, prompt medical attention is recommended. Specific causes are as follows:

1. Excessive Force

The eyeball is a sensitive organ. Excessive pressure during palpation may cause discomfort, including a sensation of swelling or pain, in the eyeball and surrounding tissues. It is important to avoid pressing on the eyeball in daily life to prevent eye injury.

2. Eye Fatigue

Prolonged use of the eyes—especially extended periods of using electronic devices, reading, or driving—may lead to fatigue or discomfort in the eye muscles, resulting in symptoms such as aching or heaviness in the eyes, dryness, headache, and difficulty concentrating. It is essential to practice proper eye usage and ensure adequate rest for the eyes.

3. Blepharitis

Blepharitis refers to inflammation of the glands at the edge of the eyelid, which may be caused by bacterial infection or poor eyelid hygiene. Pressing on the eyeball may irritate the affected area, causing a sensation of pressure or pain, possibly accompanied by redness and swelling of the eyelid margin, foreign body sensation, or discharge. Follow medical advice to relieve symptoms with medications such as tobramycin eye drops, erythromycin eye ointment, or minocycline hydrochloride capsules.

4. Keratitis

Keratitis is an inflammation of the corneal tissue, which may be caused by infection, allergy, or other factors. It commonly leads to symptoms such as red eyes, tearing, blurred vision, and light sensitivity. Pressing on the eyeball may further irritate the cornea, causing a painful or swollen sensation. Treatment may include medications such as methylprednisolone tablets, dexamethasone acetate tablets, or ganciclovir eye drops, as directed by a physician.

5. Glaucoma

Glaucoma is an eye disease characterized by elevated intraocular pressure, which can cause eye pain, headache, and blurred vision. Pressing on the eyeball may increase intraocular pressure, leading to a sensation of pressure or pain. Treatment under medical supervision may involve medications such as mannitol injection, pilocarpine nitrate eye drops, or timolol maleate eye drops.

In daily life, it is recommended to maintain good eye hygiene and avoid rubbing the eyes with hands, which helps promote eye health.