Subjective visual experience during phacoemulsification cataract surgery under sub-Tenon's block

Eye (Lond). 2003 Apr;17(3):407-9. doi: 10.1038/sj.eye.6700370.


In a prospective survey, 121 patients received sub-Tenon's block and were interviewed on the same day after their phacoemulsification cataract surgery regarding their visual experience in the operated eye during surgery. Majority of patients (81%) reported that they could see some light during surgery and various colours were seen by 56%. Movements of various descriptions were also reported by 40% of patients. The majority of patients (93%) found the visual experience acceptable but 4% thought it to be unpleasant and 3% found it frightening. Patients undergoing phacoemulsification surgery under sub-Tenon's block experience a variety of visual sensations and some patients may be frightened. All patients should receive appropriate preoperative warning.

MeSH terms

  • Anesthesia, Local*
  • Color Perception
  • Humans
  • Intraoperative Period
  • Lens Implantation, Intraocular
  • Motion Perception
  • Patient Satisfaction
  • Phacoemulsification* / psychology
  • Prospective Studies
  • Visual Perception*