Quantitative assess the efficacy of congenital idiopathic nystagmus surgery by digital eye tracker

• Published in: Chung-hua yen k'o tsa chih Vol. 51; no. 6; p. 439
• Main Authors: Yang, Hong, Yu, Tao, Yao, Junping, Tai, Zheng, Wang, Min, Yin, Zhengqin
• Format: Journal Article
• Language: Chinese
• Published: China 01.06.2015
• Subjects: Eye Movement Measurements; Feasibility Studies; Humans; Nystagmus, Congenital - physiopathology; Nystagmus, Congenital - surgery; Oculomotor Muscles; Postoperative Period; Prospective Studies; Treatment Outcome
• ISSN: 0412-4081
• DOI: 10.3760/cma.j.issn.0412-4081.2015.06.011

To evaluate the feasibility of independently developed digital eye tracker in determining the efficacy of congenital idiopathic nystagmus (CIN) surgery. Aprospective selfpairing study. The surgical efficacy was evaluated by independently developed eye tracker in 16 CIN patients. The null zone and the frequency, amplitude, intensity of nystagmus in various gazing position were recorded with eye tracker pre and post operatively. The consistency of null zone determined by digital eye tracker and clinical investigation were evaluated. The preoperative and postoperative rectification of horizontal and vertical nystagmus in the horizontal direction of individual patient were compared by paired samples t-test. The improvement or aggravation quantity were recorded by comparing preoperative and postoperative intensity of nystagmus every 5° within 25°. The null zone got from digital eye tracker and clinical investigation were highly consistent (r = 0.952, P < 0.01). The horizontal and vertical intensity improved in 9 p