J Korean Ophthalmol Soc > Volume 57(6); 2016 > Article
Journal of the Korean Ophthalmological Society 2016;57(6):957-962.
DOI: https://doi.org/10.3341/jkos.2016.57.6.957    Published online June 15, 2016.
Diagnostic Availability of Blind Spot Mapping for Ocular Torsion.
Jae Hoon Lee, Hae Ri Yum, Se Youp Lee, Young Chun Lee
1Department of Ophthalmology and Visual Science, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu, Korea. yclee@cmcnu.or.kr
2Department of Ophthalmology, Konyang University College of Medicine, Daejeon, Korea.
3Department of Ophthalmology, Keimyung University School of Medicine, Daegu, Korea.
안구회선에서 맹점지도검사의 진단적 유용성
이재훈1⋅염혜리2⋅이세엽3⋅이영춘1
가톨릭대학교 의과대학 의정부성모병원 안과 및 시과학교실1, 건양대학교 의과대학 안과학교실2, 계명대학교 의과대학 안과학교실3
Correspondence:  Young Chun Lee,
Email: yclee@cmcnu.or.kr
Received: 23 July 2015   • Revised: 31 January 2016   • Accepted: 14 April 2016
Abstract
PURPOSE
To evaluate diagnostic the usefulness of blind spot mapping in measuring ocular torsion changes and to investigate the correlations of inferior oblique muscle overaction (IOOA) and excyclotorsion measurements using fundus photographs and blind spot mapping in patients with secondary IOOA. METHODS: Eleven patients (12 eyes; IOOA group) diagnosed with secondary IOOA were evaluated for ocular movement, fundus photograph and Humphrey standard automated perimetry, and 10 patients (20 eyes; control group) were subjected to the same tests. An ocular movement examination was performed to evaluate IOOA, and fundus photograph and Humphrey standard automated perimetry were used to measure the ocular torsion. Inferior oblique myectomy or recession was performed along with horizontal strabismus surgery, and preoperative and postoperative IOOA and ocular torsion measurements were compared between the groups. RESULTS: In the IOOA group after surgery, the IOOA decreased from +2.42 ± 0.63 to +0.50 ± 0.52, the ocular torsion decreased from +14.15 ± 3.60° to +7.47 ± 1.65° (p < 0.001) on fundus photographs, and from +12.19 ± 1.62° to +9.69 ± 1.75° (p = 0.061) in Humphrey standard automated perimetry. The control group showed a mean ocular torsion of 7.44 ± 1.62° on fundus photographs and +7.24 ± 1.28° on Humphrey standard automated perimetry. CONCLUSIONS: The usefulness of blind spot mapping when the ocular torsion was measured in IOOA patients was considered low, due to the weak correlation between IOOA and extorsion; preoperative and postoperative ocular torsion amount values were not significantly different.
Key Words: Blind spot mapping;Fundus photograph;Ocular torsion


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