Figure 7From: Collection of corneal impression cytology directly on a sterile glass slide for the detection of viral antigen: An inexpensive and simple technique for the diagnosis of HSV epithelial keratitis – A pilot study Impression cytology smear stained by Papanicolaou stain. This specimen was obtained from a patient with bacterial keratitis. Note the presence of superficial epithelial cells and polymorphonuclear neutrophils, × 500.Back to article page