Corneal biopsy as a primary diagnostic tool in microbial keratitis patients on poly-antimicrobials. - Gandepalli L; Bari A; Maharana PK; Kashyap S; Ahmed N; Sahay P; Angmo D; Dada T; Sharma N; Titiyal J (Saudi journal of ophthalmology : official journal of the Saudi Ophthalmological Society, 2026)