Ocular Infection Management

Initial Treatment

Daily ocular hygiene to remove inflammatory debris and break down conjunctival adhesions, and avoiding blind sweeping of the fornices with cotton buds, is recommended for patients with ocular infections, as suggested by the American Academy of Ophthalmology 1
Preservative-free lubricants should be applied every two hours to maintain corneal moisture and promote healing, as recommended by the British Journal of Dermatology guidelines 1

If no improvement is seen within 48 hours, obtaining cultures to guide targeted antibiotic therapy is suggested, with the American Academy of Ophthalmology guidelines supporting the use of broad-spectrum topical antibiotics for corneal infections, such as moxifloxacin, due to its coverage of both gram-positive and gram-negative organisms 2
For central or severe keratitis, a loading dose of topical antibiotics applied every 5-15 minutes initially, followed by hourly maintenance, with consideration of fortified antibiotics (cefazolin 5% + tobramycin 1.3%) is recommended by the American Academy of Ophthalmology 3
For non-severe/peripheral keratitis, fluoroquinolone monotherapy with moxifloxacin 0.5% or gatifloxacin 0.3% every 1-2 hours is recommended, with alternative options including ciprofloxacin 0.3%, ofloxacin 0.3%, or levofloxacin 1.5% 3

The following antibiotics are recommended for specific indications:

Antibiotic	Concentration	Indication
Moxifloxacin	0.5%	Broad-spectrum coverage, including gram-positive
Gatifloxacin	0.3%	Broad-spectrum coverage, including gram-positive
Ciprofloxacin	0.3%	Small, non-central ulcers
Ofloxacin	0.3%	Small, non-central ulcers
Levofloxacin	1.5%	Small, non-central ulcers
Cefazolin	5%	Fortified antibiotics for large/visually significant infiltrates
Tobramycin	1.3%	Fortified antibiotics for large/visually significant infiltrates

Oral analgesics (e.g., acetaminophen, NSAIDs) and topical NSAIDs are recommended for pain relief, as suggested by the American Academy of Ophthalmology 5, 4, 3
Cycloplegic agents can decrease pain from anterior segment inflammation and prevent synechiae formation in patients with corneal abrasions 4, 3

Immediate referral to an ophthalmologist (same day for severe cases) is recommended for suspected bacterial keratitis or serious ocular infection, with no antibiotics before evaluation, and for minor corneal abrasions without signs of infection, referral to an ophthalmologist within 24 hours is recommended 3, 4
Patients with large abrasions (>4mm) or worsening symptoms should return for follow-up evaluation in 24 hours, as recommended by the American Academy of Ophthalmology 4
Complete healing of small abrasions typically occurs within 24-72 hours, and patients should be monitored for signs of complications, such as worsening pain, decreased or blurred vision, increased redness or swelling, yellow or green discharge, or lack of improvement within 48 hours, as recommended by the American Academy of Ophthalmology 4

Surgical interventions like amniotic membrane transplantation or lamellar keratoplasty are typically reserved for deep corneal ulcers with significant stromal loss, persistent epithelial defects refractory to medical therapy, descemetoceles, or impending perforation, according to the American Academy of Ophthalmology 6, 7

Recommend protective eyewear for sports and high-risk activities, and educate patients about signs and symptoms requiring prompt consultation, as suggested by the American Academy of Ophthalmology 7