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Author Spotlight: A Novel Protocol for Intracameral Injections to Enhance Precision in Rodent Ophthalmology
Published on: May 31, 2024
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Topical antibiotic prophylaxis before intravitreal injections: a pilot study
Edoardo Trovato Battagliola1, Rodolfo Javier Riveros Cabral2, Gregorio Manco1
1Department of Sense Organs, Sapienza" University of Rome, Policlinico Umberto I, Viale, del Policlinico 155, 00161, Rome, Italy.
Summary
Topical antibiotic prophylaxis before intravitreal injections did not significantly improve conjunctival sterility compared to povidone-iodine alone. Povidone-iodine effectively reduced non-sterile swabs across all groups, indicating its sufficiency for surface sterilization.
Area of Science:
- Ophthalmology
- Infectious Disease Prevention
- Clinical Trials
Background:
- Intravitreal injections require sterile ocular surfaces to prevent infection.
- Current protocols often involve povidone-iodine, but the role of pre-injection topical antibiotics is debated.
Purpose of the Study:
- To evaluate if topical antibiotic prophylaxis enhances conjunctival surface sterility before intravitreal injections compared to povidone-iodine alone.
Main Methods:
- A randomized, triple-blind clinical trial involving 98 patients undergoing intravitreal injections for maculopathy.
- Participants were randomized into four groups receiving chloramphenicol, netilmicin, an ozonized antiseptic solution, or no drops prior to povidone-iodine application.
Main Results:
- Before povidone-iodine, chloramphenicol and netilmicin showed lower non-sterile swab rates than control and ozone groups.
- After 3 minutes of 5% povidone-iodine application, all groups demonstrated a significant reduction in non-sterile swabs, with no statistically significant differences between them.
Conclusions:
- Topical antibiotics (chloramphenicol, netilmicin) reduce conjunctival bacterial load but do not offer additional benefit after povidone-iodine application.
- Povidone-iodine alone is sufficient for achieving conjunctival surface sterility before intravitreal injections, rendering prior antibiotic prophylaxis unnecessary.
