Knowledge of Visual Experience during Cataract Surgery under Local Anaesthesia: A Nationwide Survey of United Kingdom Ophthalmologists

¹ The Eye Institute at Tan Tock Seng Hospital, Singapore
² The Eye Institute at Alexandra Hospital, Singapore
³ Manchester Royal Eye Hospital, United Kingdom

^* To whom correspondence should be addressed. E-mail: kah_guan_au_eong{at}alexhosp.com.sg.

Accepted 8 June 2006

	Abstract

Purpose: To evaluate the knowledge and practices of United Kingdom (UK) ophthalmologists regarding patients' subjective visual experience during cataract surgery under local anaesthesia.

Methods: A nationwide postal survey was conducted on UK ophthalmologists using a standardised questionnaire.

Results: Proportion of surgeons who operated under regional anaesthesia who thought that patients could experience the following visual sensations were: no light perception (54%); light perception (95%); one or more colours (93%); flashes of light (81%); movement (87%); instruments (61%); surgeon's hands or fingers (53%); surgeon (43%); and changes in light brightness (88%). Fifty-eight percent of them thought that patients might be frightened by this and 77% thought that pre- operative counselling could help alleviate this fear. Proportion of surgeons who operated under topical anaesthesia who thought that patients could experience the following visual sensations were: no light perception (10%); light perception (94%); one or more colours (97%); flashes of light (86%); movement (96%); instruments (81%); surgeon's hands or fingers (65%); surgeon (51%); changes in light brightness (95%). Fifty- nine percent of them thought that patients might be frightened by this and 80% thought that pre-operative counselling could help alleviate this fear.

Conclusion: Most UK surgeons believed that during cataract surgery under local anaesthesia patients might experience various visual sensations which could cause fear and that such fear could be alleviated by preoperative counselling.

Keywords: cataract surgery, regional anaesthesia, topical anaesthesia, visual experience