Accommodative and tonic convergence and anatomical contracture in partially accommodative and non-accommodative esotropia
- Authors
- Lee, Tae-Eun; Kim, Seung-Hyun
- Issue Date
- 11월-2012
- Publisher
- WILEY-BLACKWELL
- Keywords
- accommodative; anatomical contracture; esotropia; strabismus surgery; tonic convergence
- Citation
- OPHTHALMIC AND PHYSIOLOGICAL OPTICS, v.32, no.6, pp.535 - 538
- Indexed
- SCIE
SCOPUS
- Journal Title
- OPHTHALMIC AND PHYSIOLOGICAL OPTICS
- Volume
- 32
- Number
- 6
- Start Page
- 535
- End Page
- 538
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/107010
- DOI
- 10.1111/j.1475-1313.2012.00924.x
- ISSN
- 0275-5408
- Abstract
- Citation information: Lee TE & Kim SH. Accommodative and tonic convergence and anatomical contracture in partially accommodative and non-accommodative esotropia. Ophthalmic Physiol Opt 2012, 32, 535538. doi: 10.1111/j.1475-1313.2012.00924.x Abstract Purpose: To compare accommodative convergence, tonic convergence, and anatomical contracture quantitatively in partially accommodative esotropia vs non-accommodative esotropia. Methods: Patients with an esotropia who had undergone surgery under general anaesthesia were evaluated. They were divided into two groups: 17 patients had partially accommodative esotropia and 15 patients had non-accommodative esotropia (basic esotropia). We supposed that the total esodeviation (Eso) was composed of three components: accommodative convergence (AC), tonic convergence (TC), and anatomical contracture (AnC). We measured the preoperative angle of esodeviation with (AC) or without glasses (Eso) in awakening state at 1/3 m and the preoperative esodeviation under general anaesthesia (AnC). TC was calculated by the formula TC = EsoD-AC-AnC. Results: The average ratios of TC/Eso, AC/Eso and AnC/Eso were 46%, 32%, and 22%, respectively in the partially accommodative esotrope group, and 28%, 1%, and 71%, respectively in the non-accommodative esotropes. These differences were significant for AC/Eso and AnC/Eso (p < 0.0001) but not for TC/Eso (p = 0.15). Conclusions: Among the three components, tonic convergence was responsible for a larger portion of esodeviation than anatomical contracture in partially accommodative esotropia, whereas anatomical contracture played a greater role in the non-accommodative esotropia group.
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