Ans. B i.e. Herpes simplex virus II Ophthalmia neonatorum Time frame of signs/ symptoms following bih play an impoant role in determining the most likely etiology and subsequent proper diagnosis and treatment Within 48 hours: Chemical conjunctivitis (Typically presents within first 24 hours following bih) & Niesseria gonorrhoe 48-72 hours: Staph. aureus, Strepto. Hemolyticus 5-7 days: HSV-II More than 1 week: C. trachomatis (D-K)