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Updated: Dec 23, 2025

Intravitreal Injection and Quantitation of Infection Parameters in a Mouse Model of Bacterial Endophthalmitis
Published on: February 6, 2021
Pasteurella multocida-induced endophthalmitis after a cat scratch
Yoshihito Mochizuki1, Hiroto Ishikawa1, Aki Sato1
1Department of Ophthalmology, Hyogo College of Medicine, Nishinomiya 663-8501, Japan.
Purpose:
To report the case of a Japanese girl with a perforating ocular injury caused by a cat scratch, resulting in Pasteurella multocida-induced endophthalmitis.
Observations:
A 10-year-old girl presented with a red eye, eye pain, and blurred vision in her right eye immediately after receiving a cat scratch. We performed lensectomy and vitrectomy for endophthalmitis 4 hours after her arrival. After culturing a sample of the vitreous humor, Pasteurella multocida was identified, and the antibiotic was changed to ampicillin. The best-corrected visual acuity of her right eye improved to 20/20 6 months after surgery.
Conclusions And Importance:
We present a rare case of Pasteurella multocida-induced endophthalmitis after a cat scratch. Our findings suggest the great importance of identifying the responsible bacterium and using matched antibiotics as soon as possible in such cases to prevent vision loss.

