Which department should I see for red or bloodshot eyes?

Name: Which department should I see for red or bloodshot eyes?
Creator: Which Department
Published: 2026-09-17

2026-09-17 · Neutral information that names no hospital, doctor or region. No rankings, recommendations or reviews.

Short answer

Ophthalmology(안과) is generally the first department to see for red or bloodshot eyes, as eye specialists can examine the structure of the eye and identify whether the cause is local or related to another condition. If redness is accompanied by systemic symptoms such as joint pain, skin rash, or fever, an Internal Medicine(내과) or Rheumatology(류마티스내과) consultation may follow based on the ophthalmologist's assessment.

Which department

1Ophthalmology(안과)
Ophthalmologists specialize in diseases and conditions of the eye, making them the most appropriate first contact for redness or bloodshot appearance in the eye. They can assess the conjunctiva, cornea, iris, and surrounding structures to determine whether the cause is an infection, inflammation, injury, or elevated pressure within the eye. — First / second line: In most cases, visiting a local ophthalmology clinic(의원) first is appropriate before considering a larger hospital. A referral to a hospital-level ophthalmology department is generally arranged if the condition requires advanced imaging or surgical evaluation.
2Internal Medicine(내과) / Rheumatology(류마티스내과)
Redness of the eye can sometimes be a sign of systemic inflammatory conditions such as autoimmune diseases, in which case internal medicine or rheumatology may be involved in coordinating care alongside ophthalmology. These departments address underlying systemic conditions that may be contributing to eye inflammation. — First / second line: Patients are generally referred to these departments by an ophthalmologist when a systemic cause is suspected, rather than visiting them as the first point of contact for eye redness alone.
3Emergency Medicine(응급의학과)
When eye redness is accompanied by sudden severe pain, sudden vision loss, or trauma, emergency medicine provides the immediate evaluation and triage needed before specialty care can be arranged. — First / second line: This department is not a planned first visit; it applies when symptoms develop suddenly and severely, requiring urgent assessment that cannot wait for a scheduled clinic appointment.

Go to the ER / call 119 if

If any of the following applies, do not choose a department — go to an emergency room or call 119 (Korea's emergency number).

Sudden severe eye pain combined with redness and vomiting or nausea — go to the emergency room immediately rather than choosing a department.
Sudden decrease or complete loss of vision in one or both eyes alongside redness — seek emergency care right away.
Eye redness following a direct impact, chemical splash, or foreign object penetration — go to the emergency room without delay.
Redness accompanied by a rapidly expanding cloudy or white area on the surface of the eye — treat this as an emergency.
Eye redness with high fever, severe headache, and stiff neck — go to the emergency room or call 119 immediately.

Before your visit

Note when the redness first appeared and whether it started suddenly or gradually over time.
Observe whether the redness is in one eye or both eyes, and whether it has been spreading or changing.
Record any accompanying symptoms such as discharge, itching, pain, sensitivity to light, or blurred vision.
Make a list of any medications, eye drops, or supplements you are currently taking, as some can affect eye appearance.
If you wear contact lenses, note how long you wear them daily and when you last replaced them, as this information is often relevant.
Bring any previous eye exam results or medical records if you have a known eye condition or have been seen for eye problems before.

General principles

Redness or a bloodshot appearance in the eye generally results from dilation or irritation of the small blood vessels on the surface of the eye. Because there are many possible causes — ranging from minor irritation and dry eyes to infections, inflammation, or elevated intraocular pressure — an ophthalmologist is typically the starting point since they have the tools to examine the eye directly.

In the Korean healthcare system, it is generally recommended to begin at a local ophthalmology clinic(의원) as the first step. If the condition is complex or requires equipment available only at a larger facility, the clinic physician will typically issue a referral letter(진료의뢰서); note that while secondary hospitals(병원/종합병원) can be visited directly without a referral under normal health insurance(건강보험) coverage, a referral letter is required for insurance coverage at tertiary hospitals(상급종합병원).

During a typical ophthalmology visit for eye redness, a doctor generally examines the external and internal structures of the eye using a slit-lamp microscope and may measure intraocular pressure. The specific tests performed depend on the clinical picture the doctor observes, and any interpretation or diagnosis is made by the physician during the consultation.

When redness is associated with systemic diseases such as autoimmune or inflammatory conditions, ophthalmology and other specialties such as rheumatology or internal medicine may work together. In such cases, the ophthalmologist generally coordinates with other departments rather than the patient navigating multiple departments independently.

FAQ

Should I go to a local eye clinic or a large hospital for red eyes?

In general, starting at a local ophthalmology clinic(의원) is appropriate for most cases of eye redness, as they can perform an initial examination and refer you onward if needed. A large hospital is usually considered when the local clinic determines that specialized equipment or further evaluation is necessary, and a referral letter is required for insurance purposes only when visiting a tertiary hospital(상급종합병원).

Could red eyes be a sign of allergies, and would I need to see a different department?

Allergic reactions are one common reason the eyes can appear red or irritated, and an ophthalmologist can generally assess whether allergy-related inflammation of the conjunctiva may be involved. If a broader allergic condition is suspected, the ophthalmologist may suggest coordination with an Allergy(알레르기내과) or Otorhinolaryngology(이비인후과) department, though this depends on the overall clinical picture and is a decision made by the physician.

Is eye redness in children handled differently than in adults?

Children with red eyes are generally seen by an ophthalmologist as well, though pediatric ophthalmology services may be more available at larger hospital-level facilities. For younger children, a Pediatrics(소아청과) clinic may also serve as a first point of contact, particularly if the redness is part of a broader illness, and the pediatrician can then coordinate an ophthalmology referral if needed.

What kinds of examinations are generally done for red eyes at an ophthalmology visit?

An ophthalmologist typically uses a slit-lamp examination to look closely at the surface and front structures of the eye, and intraocular pressure measurement is commonly included as part of the assessment. The specific examinations vary depending on what the doctor observes clinically, and any decisions about further tests or follow-up are made by the physician based on individual circumstances.

Find a clinic (external directories)

External directories for finding a clinic by region once you know the department (public data, no rankings or recommendations).

This page is general medical information and does not replace diagnosis, treatment or choosing a clinic. Consult a doctor for any symptom. In an emergency, go to the ER or call 119 immediately.