What Causes Redness in the Corner of the Eye?

Among the five senses, the eyes are arguably the most vulnerable to injury. Frequently, people notice unexplained redness appearing at the inner or outer corners of their eyes—often without any obvious cause. So, what causes redness in the eye corners? Let’s explore this together.

What Causes Redness in the Eye Corners?

1. Acute Iridocyclitis

The etiology of iridocyclitis is complex and often unknown; however, it may be associated with autoimmune disorders (e.g., rheumatoid arthritis), tuberculosis, syphilis, or viral infections. Symptoms include decreased vision accompanied by marked photophobia, tearing, and ocular pain—which may radiate to the eyebrow arch, temple, or forehead. Clinical signs typically include ciliary or mixed conjunctival injection, keratic precipitates on the posterior cornea, aqueous humor flare or cells, iris edema, miosis or irregular pupil shape, sluggish pupillary light reflex, and posterior synechiae (adhesions between the iris and lens). Intraocular pressure is usually normal but may occasionally be elevated or reduced.

2. Acute Conjunctivitis

Acute conjunctivitis is a common, highly contagious ocular infection caused by bacteria or viruses. It has an abrupt onset, affecting one or both eyes either simultaneously or sequentially. Affected individuals commonly experience foreign-body sensation, itching, burning, or stinging; severe cases may involve photophobia and a sensation of heat. Visual acuity is generally unaffected. Clinical features include eyelid swelling, conjunctival hyperemia, and copious discharge—typically purulent (bacterial), mucoid, or mucopurulent. Patients often awaken with their eyelids stuck shut due to overnight discharge accumulation. In viral cases, discharge tends to be watery, and may be associated with keratitis, preauricular or submandibular lymphadenopathy, and tenderness.

3. Unhealthy Lifestyle Habits

These include sleep deprivation, prolonged visual strain, consumption of spicy or irritating foods, and frequent eye rubbing. Maintaining good ocular hygiene is essential. Avoid excessive screen time or near-work; allow your eyes regular rest periods. Gentle eye massage may help improve circulation. Refrain from consuming spicy, greasy, or otherwise irritating foods, and prioritize adequate rest to prevent symptom exacerbation.

That concludes our overview of potential causes of eye-corner redness. We hope this information proves helpful. Wishing you a joyful life and optimal health!