TABLE 3.

Summary of the diagnostic tests carried out on intraocular samples

Sample no.a	Initial diagnosis	Predisposing condition(s) or surgery	Gram strain reaction	Culture	PCR result
1v	Acute endophthalmitis	Trabeculectomy surgery	Positive	S. pneumoniaeb	Gram positive
1a	Acute endophthalmitis	Trabeculectomy surgery	Positive	S. pneumoniae	Gram positive
2v	Metastatic endophthalmitis	Staphylococcal osteomyelitis and septicemia	Positive	S. aureusc	Gram positive
3v	Chronic endophthalmitis	Cataract surgery	No organisms seen	No growth	Gram positive
4vL	Vitritis secondary to chronic intraocular inflammation	Not applicable	Not done	No growth	No product
4vR	Vitritis secondary to chronic intraocular inflammation	Not applicable	Not done	No growth	No product

^aAbbreviations: v, vitreous humor; a, aqueous humor; R, right eye; L, left eye. 

^bThe vitreous sample from this patient's eye was subcultured from a cloudy brain heart infusion at 24 h and yielded florid growth of streptococci after a further 24 h. 

^cThe vitreous sample from this patient's eye was culture positive on blood agar, brain heart infusion, cooked meat broth, fluid thioglycolate medium, and R2A agar after 24 h.