The effect of peribulbar anaesthesia on optic nerve function in 20 patients, before and after cataract surgery, was measured. All the patients had decreased visual acuity. Five (25%) had no perception of light. Seventeen (85%) developed a relative afferent pupil defect (RAPD). No patients saw the operating instruments. Seven (35%) had improved visual acuity immediately postoperatively. Patients should be warned that they may lose vision completely on being given a peribulbar anaesthetic; however their vision will improve, but not necessarily immediately, postoperatively. Examination for an RAPD is a good method of providing reassurance that the operating instruments will not be seen.
- Cataract Extraction
- Optic Nerve
- Postoperative Period
- Visual Acuity
Talks, S. J., Chong, N. H., Gibson, J. M., & Francis, I. R. (1994). Visual acuity and pupillary reactions after peribulbar anaesthesia. British Journal of Ophthalmology, 78(1), 41-43. https://doi.org/10.1136/bjo.78.1.41