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Visual experience during cataract surgery

I E Murdoch1, P Sze

  • 1Moorfields Eye Hospital, London, UK.

Eye (London, England)
|January 1, 1994
PubMed
Summary
This summary is machine-generated.

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Most patients undergoing cataract surgery with local anesthesia reported visual experiences, including colors and movements. These visual perceptions during surgery varied among individuals, with some even drawing their experiences.

Area of Science:

  • Ophthalmology
  • Neuroscience
  • Medical Imaging

Background:

  • Cataract surgery is a common procedure often performed under local anesthesia.
  • Patient awareness and visual experiences during surgery are not fully understood.
  • Understanding these experiences can inform patient care and surgical protocols.

Purpose of the Study:

  • To investigate the visual experiences of patients during local anesthesia for cataract surgery.
  • To document the types and prevalence of visual phenomena reported by patients.
  • To explore changes in visual perception during the surgical procedure.

Main Methods:

  • Fifty-six patients undergoing cataract surgery with local anesthesia were surveyed.
  • A questionnaire was used to record subjective visual experiences during the procedure.

Related Experiment Videos

  • Patients' drawings were collected to supplement questionnaire data.

    • Main Results:

    • 54 out of 56 patients had visual experiences during surgery.
    • Reported experiences included perceiving colors (80%), movements (68%), flashes (66%), abstract images (55%), and objects (20%).
    • Light brightness changed during surgery for two-thirds of patients, and colors changed for one-third.

    Conclusions:

    • A significant majority of patients experience visual phenomena during cataract surgery under local anesthesia.
    • The range of visual experiences is diverse, including colors, movements, and object perception.
    • These findings highlight the importance of patient awareness and potential psychological impact during surgery.