IJCEM Copyright © 2008-All rights reserved. Published by e-Century Publishing Corporation, Madison, WI 53711
Int J Clin Exp Med 2010;4(3):205-213

Original Article
Patients’ subjective visual experiences during vitreous surgery under local
anesthesia

Ji-Feng Yu, Li Liang, Yu-Qin Wen, Li Liu, Yi-Fei Huang

Department of Ophthalmology, Chinese PLA General Hospital, Beijing 100853, China; Department of Stomatology, 309 Hospital of
Chinese People’s Liberation Army, Beijing 100091, China; Center of Anesthesia and Surgery, Chinese PLA General Hospital, Beijing
100853, China.

Received June 29, 2011; August 27, 2011; Epub September 15, 2011; published September 30, 2011

Abstract: Objective: To investigate patient’s visual experience during vitreous surgery under local anesthesia. Methods: A prospective
and randomized study of 76 patients that underwent vitreous surgeries in our hospital between July 2010 and December 2010 was
designed. All patients were interviewed half an hour before and within 1 hour after the surgery using a standardized questionnaire.
Basic characteristics of patients and their intraoperative visual experiences like light, color, moving object, pain, fear, and the desire for
general anesthesia before and after the surgery were recorded. Results: Sixty patients (78.9%) perceived at least light perception, and
16 patients (21.1%) got no light perception throughout the entire duration of the operation. Forty one patients (53.9%) perceived only
light, while 19 patients (25%) experienced moving objects. Thirty nine patients (51.3%) were frightened during their intraoperative visual
experiences. Patients with better preoperative best-corrected visual acuity (BCVA) were more likely to be frightened (p=0.002). The
frightened experience was affected notably by the different perceptions during operation, moving object (p=0.024), light (p=0.071), and
color (p=0.071). Patients below 50 years old, especially from 20 to 30, were more likely to choose general anesthesia after the vitreous
surgery. Conclusions: Most patients (78.9%) experienced at least light perception during the vitreous surgery under local anesthesia.
There were no significant differences between the various visual experiences and their basic characteristics. Patients with better
preoperative BCVA, perceived moving objects in their visual sensations seemed more likely to be frightened. (IJCEM1106006).

Key words: Visual experience, regional anesthesia, vitreous surgery

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Address all correspondence to:
Dr. Yi-Fei Huang
Department of Ophthalmology, Chinese PLA General Hospital
28 Fuxing Road, Haidian District, Beijing 100853, China.
Phone: 86-10-66937943; Fax: 86-10-68286682
E-mail:huangyf301@gmail.com