Here are flashcards with basic infection questions. Click on the cards for more information or if you’d like to leave a comment. This info was pulled from our infection chapter of OphthoBook.

What antibiotic do we use to cover most corneal abrasions?

A gentle antibiotic like erythromycin ointment can help lubricate the surface. Contact lens wearers need something stronger like cipro.

What is endophthalmitis and how do you get it?

Endophthalmitis is when an infection forms INSIDE the eye. They are always terrible and most occur from recent surgery or prior glaucoma procedures.

What CD4 count do patients with CMV retinitis typically have?

CMV retinitis typically presents when CD4 counts are below 50, though it rarely can present with counts under 200.

What organism do we worry about with contact lens patients?

These patients have higher incidence of pseudomonas. This bacteria tends to be aggresive and requires more rigorous antibiotic coverage.

What do you call a layer of white pus in the anterior chamber?

This is a hypopyon, a collection of pus in the anterior chamber. It can be from infection (endophthalmitis) or from bad internal inflammation (uveitis).

What findings on exam are consistant with orbital cellulitis?

An infection tracking behind the eye causes obvious symptoms: proptosis, chemosis, double vision, and decreased acuity.

What is the most common type of conjunctivitis in adults and children?

In adults, viral conjunctivitis is most common. In children, bacterial conjunctivitis is more common.

What’s the difference between a corneal abrasion and an ulcer?

An abrasion is non-infected scratch on the corneal surface. An ulcer implies a localized infection in the cornea.

What are the three types of conjunctivitis and how do they present?

Viral conjunctivitis causes redness and watering. Bacterial infection creates mucous and allergic conjunctivitis causes itching/swelling.

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