Certified Paraoptometric Assistant (CPOA) Practice Test

An Algerbrush may be used to:

Remove a Foreign Body Remove a Rust Ring Dilate Pupil Scrape the Cornea

Correct Answer:

Remove a Rust Ring

Explanation:

An Algerbrush is used to remove rust rings. When a metallic corneal foreign body injures the eye, iron from the metal can oxidize and form a rust ring around the wound. The Algerbrush, a small, soft-bristled instrument, is used to gently brush the rust ring away from the corneal surface, helping clear the residue and promote healing. It’s not meant for removing the foreign body itself, dilating the pupil, or broadly scraping the cornea; its purpose is specifically debridement of the rust ring to reduce irritation and infection risk.

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