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Updated: May 23, 2026

Minimally Invasive Surgical Decompression of Occipital Nerves
Published on: September 13, 2024
Diplopia with local anesthesia.
Michael Pragasm1, Anil Managutti
1Department of Oral and Maxillofacial Surgery, Modern Dental College and Research Center, Indore, M.P., India.
A rare complication of local anesthesia, diplopia (double vision), can occur after a posterior superior alveolar (PSA) nerve block. This case report details the event and discusses potential causes and management strategies for dental practitioners.
Area of Science:
- Dentistry
- Anesthesiology
- Ophthalmology
Background:
- Local anesthesia (LA) administration can lead to various local and systemic complications.
- Posterior superior alveolar (PSA) nerve blocks are commonly used for dental procedures.
- Diplopia, or double vision, is an exceptionally rare complication following a PSA nerve block.
Observation:
- A patient developed diplopia and impaired lateral gaze in the right eye after receiving a PSA nerve block for upper right third molar extraction.
- The patient's symptoms resolved completely as the anesthetic effect subsided.
- This presentation highlights an unusual neurological sequela of a routine dental anesthetic technique.
Findings:
- The case report documents a rare instance of temporary diplopia following a PSA nerve block.
- Potential mechanisms, such as anesthetic spread or direct nerve involvement, are discussed.
- Complete recovery suggests a transient neurological effect rather than permanent damage.
Implications:
- Clinicians must be aware of rare complications associated with local anesthesia, including neurological effects like diplopia.
- Prompt recognition and understanding of potential mechanisms are crucial for managing such adverse events.
- This case underscores the importance of comprehensive patient monitoring during and after dental procedures involving local anesthesia.
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