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Peribulbar anesthesia is an injection of anesthetic around the eyeball to numb the eye and freeze extraocular muscles. The medicine spreads within the orbital fat without entering the muscle cone. This approach provides pain control and limited movement during many eye surgeries. Sedation may be paired with the block for comfort.
read more about peribulbar anesthesia ...A fine needle delivers anesthetic in the lower or upper eyelid region, followed by gentle pressure to help the spread. Onset is slightly slower than retrobulbar blocks but carries a lower risk of globe penetration. The eyelids relax and vision dims as the block takes effect. Vital signs and comfort are monitored throughout.
The anesthetic surrounds the muscles and nerves that control movement and sensation. As it spreads, the eye becomes still enough for surgical work. The gradual onset allows careful observation of comfort. Proper placement supports a predictable and calm procedure.
It suits cataract surgery, some vitreoretinal procedures, and cases where a safer margin from the optic nerve is preferred. Patients on anticoagulants or with high myopia may benefit from the extraconal approach. The choice also reflects surgeon training and case complexity. Topical or sub Tenon's blocks are alternatives.
Bruising, eyelid swelling, increased pressure, or temporary double vision can occur. Rare complications include optic nerve damage, hemorrhage, or systemic effects if injected intravascularly. Pre block checks and careful technique reduce these events. Most side effects resolve within hours to days.
Follow instructions about medicines, fasting if advised, and arranging an escort. Remove contact lenses and avoid eye makeup. Report allergies and blood thinner use. Expect mild pressure during injection rather than sharp pain.
Will I be completely asleep? Usually not; light sedation may be used.
How long does numbness last? Often a few hours after surgery.
Can both eyes be blocked? Typically only the operated eye is treated.
Ocular Anesthesia. EyeWiki. https://eyewiki.org/Ocular_Anesthesia. July 12, 2024.
Local and Regional Anesthesia in Ophthalmology and Ocular Trauma. StatPearls (NCBI Bookshelf). https://www.ncbi.nlm.nih.gov/books/NBK574554/. May 7, 2023.
Anesthesia for Eye Surgery. StatPearls (NCBI Bookshelf). https://www.ncbi.nlm.nih.gov/books/NBK572131/. August 25, 2023.
Retrobulbar Block. StatPearls (NCBI Bookshelf). https://www.ncbi.nlm.nih.gov/books/NBK557448/. February 12, 2024.
Peribulbar vs. incisionless sub-Tenon's blocks. (PMC). https://pmc.ncbi.nlm.nih.gov/articles/PMC11684247/. 2024.