From: Intravenous administration of Penicillin results in therapeutic intravitreal levels in chronic postoperative endophthalmitis
Drug
Route
Dosing regimen
Intravitreal concentration
Range of quantitation
Penicillin
Intravenous
4 million U q4h
3.5μg/mla
0.06-5μg/ml
Ampicillin
Intravitreal
5 mg (5000μg/0.1 ml) last administered 48 h prior
0.3μg/mla
0.12–2.5μg/ml