When to See a Doctor for Red Eye

When dealing with red eye, a condition where the sclera turns pink or blood‑filled due to inflammation, irritation, or infection. Also known as eye redness, it can be a harmless response or a warning sign of a deeper problem.

One of the most common reasons for red eye is conjunctivitis, inflammation of the thin membrane covering the white of the eye and the inner eyelid. It often brings itching, watery discharge, and a gritty feeling. While many cases clear up with simple hygiene, bacterial or viral forms may need prescription drops. If you notice thick yellow pus, rapid spreading, or your child keeps rubbing the eye, that’s a cue to book a visit.

Serious Conditions That Demand Prompt Attention

Another entity you should watch for is uveitis, inflammation of the middle layer of the eye (the uvea) that can cause intense pain, blurred vision, and light sensitivity. Unlike mild irritation, uveitis can scar the eye and lead to permanent vision loss if untreated. Sudden, severe ache, a halo around lights, or loss of visual sharpness are red flags.

A third concern is corneal ulcer, an open sore on the clear front surface of the eye that often follows trauma or infection. It presents as a painful, gritty spot, excessive tearing, and a noticeable white or gray patch on the cornea. This condition can progress quickly, so any suspicion should trigger an immediate doctor’s appointment.

These three entities—conjunctivitis, uveitis, and corneal ulcer—illustrate the spectrum of issues that can turn a simple red eye into a medical emergency. Understanding the difference between harmless redness and a sign of deeper pathology helps you decide when to self‑care and when to seek professional help. Below you’ll find articles that break down each condition, show you what symptoms matter most, and guide you on the best next steps.