The organism most commonly isolated from contact lens related bacterial keratitis is:

• A Staphylococcus aureus
• B Streptococcus pneumoniae
• C Moraxella catarrhalis
• D Pseudomonas aeruginosa ✓

Explanation

Pseudomonas aeruginosa is the single most frequent isolate in contact lens associated microbial keratitis because it adheres avidly to lens surfaces and thrives in moist environments such as lens cases and tap water. It produces a rapidly suppurative ulcer with dense stromal infiltration and can perforate within days. Staphylococcus epidermidis and aureus are also common but rank below Pseudomonas in most published series.

Reference: Khurana Comprehensive Ophthalmology, 7th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.