Culture of aqueous aspirated during management of acute-onset postoperative endophthalmitis four days after cataract surgery most commonly grows which organism?

• A Streptococcus pneumoniae
• B Coagulase-negative staphylococci (Staphylococcus epidermidis) ✓
• C Pseudomonas aeruginosa
• D Aspergillus species

Explanation

Coagulase-negative staphylococci from the patient's own lid and conjunctival flora account for roughly half to two-thirds of culture-positive cases of acute postoperative endophthalmitis, giving a comparatively indolent course with better visual outcomes. Pneumococcus and gram-negative organisms cause more fulminant virulent disease but are less frequent, and fungal endophthalmitis typically follows trauma or presents indolently weeks later.

Reference: Kanski's Clinical Ophthalmology, 9th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.