Perception of 3-Dimensional (3D) Image after Successful Exotropia Surgery

Jinsun Kim; Seung-Koo Lee; Hyung Keun Lee; Jong Bok Lee; Sueng-Han Han

doi:10.3341/jkos.2013.54.6.932

Journal List > J Korean Ophthalmol Soc > v.54(6) > 1009707

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Kim, Lee, Lee, Lee, and Han: Perception of 3-Dimensional (3D) Image after Successful Exotropia Surgery

Original Article

J Korean Ophthalmol Soc 2013;54(6):932-937.

Published online: 7 September 2013

DOI: https://doi.org/10.3341/jkos.2013.54.6.932

Perception of 3-Dimensional (3D) Image after Successful Exotropia Surgery

Jinsun Kim, MD¹, Seung-Koo Lee, MD², Hyung Keun Lee, MD¹, Jong Bok Lee, MD¹, Sueng-Han Han, MD^1,

¹The Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea

²Departments of Radiology, Yonsei University College of Medicine, Seoul, Korea

Address reprint requests to Sueng Han Han, MD Department of Ophthalmology, Gangnam Severance Hospital #211 Eonju-ro, Gangnam-gu, Seoul 135-720, Korea Tel: 82-2-2019-3440, Fax: 82-2-3463-1049, E-mail: shhan222@yuhs.ac

Received 8 December 201220 January 2013 Accepted 10 April 2013

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose

To investigate the perception of 3-dimensional (3D) image after successful exotropia surgery and compare with Titmus stereo test.

Methods

A total of 23 children who underwent surgery for intermittent exotropia and 28 normal children were evaluated with a 3D laptop computer and Titmus stereo test.

Results

The mean minimal 3D scene depth level was 38.26 ± 19.69 in the exotropia group and 33.21 ± 16.11 in the normal group with no significant difference (p = 0.319). The mean stereoacuity was 60.97 ± 34.23 arc sec in the exotropia group and 76.69 ± 93.81 arc sec in the normal group with no significant difference (p = 0.444). The mean minimal 3D scene depth and mean stereoacuity showed statistically significant positive correlation in both the exotropia group (p = 0.024) and nor-mal group (p = 0.026).

Conclusions

After a successful exotropia surgery, patients can normally perceive 3D images. Better 3D image perception can be predicted if a previously established stereo test shows good results.

Keywords: 3D image, Exotropia, Stereopsis

References

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Figure 1.

(A) The patient watches the 3D image displayed by 3D laptop computer. (B) Animation is converted into 3D image by TriDef 3D media player.

Figure 2.

Comparison between exotropia group and normal group. (A) The mean minimal 3D scene depth level didn’t show sig-nificant difference (p = 0.319, independent samples t-test). (B) The mean stereoacuity by Titmus stereo test didn’t show significant difference (p = 0.444, independent samples t-test).

Figure 3.

Correlation between mean minimal 3D scene depth level and mean stereoacuity by Titmus test (A) in exotropia group (Pearson correlation coefficient 0.468, p = 0.024), (B) in normal group (Pearson correlation coefficient 0.421, p = 0.026).

Table 1.

Characteristics of subjects

	Exotropia group	Normal group
Number of subjects (n)	23	28
Sex (n)
Male	7	9
Female	16	19
Age (year)
Mean ± SD	10.78 ± 3.13	11.39 ± 2.50
Range	7-18	8-17
Preoperative mean deviation angle ± SD (PD)
At distance	26.87 ± 6.97
At near	25.78 ± 6.62
Mean BCVA (log MAR)
OD	0.014	0
OS	0.010	0.005

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