Bilateral red eyes

Painful

1. Caustic Keratoconjunctivitis
2. Foreign body
3. Trauma
4. Contact Lens
5. Conjunctivitis
6. Blepharitis
7. Allergic reaction
8. Thyroid disease
   1. gross chemosis, diplopia
9. Carotico-cavernous fistula
   1. fistula b/n carotid and cavernous sinus p/w bilat conjunctival edema and pulsatile exophthalmos (spont in elderly, 2/2 trauma in young)

Painless

1. Conjunctivitis
2. Blepharitis
3. Allergic Reaction
4. Thyroid Dz (optic nerve compression/APD)

See Also

• Eye Algorithm (Main)
• Red Eye (Unilateral)

Source

Adapted from Pani