Ciliary flush in eye examination indicates potential?

• A. Corneal abrasion
• B. Uveitis or iritis
• C. Glaucoma
• D. Conjunctivitis

Answer: (B)

Ciliary flush signals inflammation of the anterior uveal tract, most often anterior uveitis (iritis). The redness forms a circumlimbal ring around the cornea because the deeper vessels of the iris and ciliary body become inflamed, leading to a characteristic ring-like injection and pain out of proportion to exam findings. This pattern helps distinguish it from surface issues.

Corneal abrasion usually presents with severe eye pain, tearing, and a positive fluorescein stain showing a corneal defect, with redness more from surface vessels rather than a ring around the limbus. Conjunctivitis typically shows diffuse conjunctival injection with discharge and involves the superficial vessels rather than a circumscribed circumlimbal flush. Glaucoma causes a red eye too, but the redness is not the classic circumlimbal flush; it’s often accompanied by optic symptoms, halos around lights, a mid-dilated fixed pupil, and markedly elevated intraocular pressure.

In short, a circumlimbal “ciliary flush” points to anterior uveitis/iritis and requires evaluation for intraocular inflammation, whereas the other conditions produce different red-eye patterns and associated signs.