Red eye resident survival guide

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Seyed Arash Javadmoosavi, MD[2]

Overview

Red eye is an essential sign of eye inflammation. Although it is usually benign and can be managed by primary care physician, It is important to distinguish between benign and sight-threatening diagnoses. Its most common cause is conjunctivitis. However, the other common causes are subconjunctival hemorrhage, blepharitis, scleritis, corneal abrasion, glaucoma and foreign body. Red eye can be concomitant photophobia, eye discharge, pain, itiching and visual changes.

Causes

Life Threatening Causes

Life-threatening causes include conditions which may result in death or permanent disability within 24 hours if left untreated.

• Acute angle closure glaucoma (AACG)
• Endophthalmitis
• Bacterial keratitis
• Chemical burn
• Traumatic eye injury
• Scleritis
• Corneal ulcer
• Hyper acute conjunctivitis

Common Causes

• Conjunctivitis
• foreign body
• blepharitis
• scleritis
• subconjunctival hemorrhage

Diagnosis

Shown below is an algorithm summarizing the diagnosis of red eye.

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Patients with red eye

Mild or no pain with mild blurring or normal vision

Moderate to severe pain

Hyperemia

Vision loss, Distorted pupil, Corneal involvement

Local

Diffuse

Vesicular rash, Corneal ulcer, Iritis, Acute angle gluacoma, Chemical burn, Traumatic eye injury

Episcleritis

Discharge

Emergency Ophthalmology referral

No

Yes

Subconjunctival hemorrhage

Intermittent

Continuous

Dry eye

Watery or Serous

Mucopurulent to Purulent

Itiching

Clamydial Conjunctivitis

Acute bacterial conjunctivitis

Mild to non

Moderate to severe

Viral Conjunctivitis

Allergic Conjunctivitis

Treatment

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Do's

• The content in this section is in bullet points.

Don'ts

• The content in this section is in bullet points.

References

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