Journal of Ophthalmology
Volume 2017 (2017), Article ID 7402715, 2 pages
https://doi.org/10.1155/2017/7402715

Letter to the Editor

Response to: Comment on “Exotropia Is the Main Pattern of Childhood Strabismus Surgery in the South of China: A Six-Year Clinical Review”

Xinping Yu,¹ Zhouduo Ji,² Huanyun Yu,¹ Meiping Xu,¹ and Jinling Xu¹

¹The Eye Hospital of Wenzhou Medical University, Wenzhou 325027, China
²Ophthalmology Department, Zhengzhou Second Hospital, Zhengzhou 450006, China

Correspondence should be addressed to Xinping Yu; yu-xinping@163.com

Received 19 October 2016; Accepted 8 November 2016; Published 16 March 2017

Academic Editor: Lisa Toto

Copyright © 2017 Xinping Yu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Thanks are due to Dr. Ayyildiz et al. [1] for the constructive questions and suggestions to our publication [2]. We included our answers below.

The distributions of strabismus subtypes for all age groups between 2006 and 2011 were listed in Table 1.

Table 1: Distributions of strabismus subtypes for all age groups between 2006 and 2011.

Age group
Year

2006
2007
2008
2009
2010
2011

0–6
7–17
0–6
7–17
0–6
7–17
0–6
7–17
0–6
7–17
0–6
7–17

Intermittent exotropia
6
45
5
36
15
67
29
78
31
88
40
115

(10%)
(24%)
(6%)
(17%)
(16%)
(25%)
(28%)
(29%)
(24%)
(29%)
(25%)
(33%)

Constant exotropia
15
27
8
57
10
51
17
71
13
49
14
61

(23%)
(15%)
(9%)
(28%)
(11%)
(19%)
(16%)
(26%)
(10%)
(16%)
(9%)
(17%)

Infant esotropia
3
9
14
7
8
6
7
5
10
14
15
13

(5%)
(5%)
(16%)
(3%)
(8%)
(2%)
(6.5%)
(2%)
(8%)
(5%)
(9%)
(4%)

Partial accommodative esotropia
4
12
10
16
9
18
10
11
9
15
16
20

(6%)
(6%)
(12%)
(8%)
(9%)
(7.5%)
(10%)
(4%)
(7%)
(5%)
(10%)
(6%)

Nonaccommodative esotropia
9
30
14
35
20
48
18
35
14
49
21
40

(14%)
(16%)
(16%)
(17%)
(21%)
(18%)
(17%)
(13%)
(11%)
(16%)
(13%)
(12%)

Congenital superior oblique palsy
8
8
10
6
14
16
8
12
14
13
13
20

(12%)
(4%)
(12%)
(3%)
(15%)
(6.5%)
(7.5%)
(4%)
(11%)
(4%)
(8%)
(6%)

Others
19
55
25
50
19
58
16
60
37
76
42
78

(30%)
(30%)
(29%)
(24%)
(20%)
(22%)
(15%)
(22%)
(29%)
(25%)
(26%)
(22%)

Total
64
186
86
207
95
264
105
272
128
304
161
347

(100%)
(100%)
(100%)
(100%)
(100%)
(100%)
(100%)
(100%)
(100%)
(100%)
(100%)
(100%)

The surgical criteria for intermittent exotropia were the same for all patients included in the study, which included (1) the degree of deviation (distance and/or near) ≧20 PD and (2) the frequency of deviation occurring more than 1/2 of waking hours, and/or (3) those combined with sensory deficit [3, 4]. Here the sensory deficit included the stereoacuity at near and distance, binocular vision measured through stereoscope, and the sensory fusion measured by Worth 4 Dot test.

And the surgical criteria for esotropia in children are mainly based on the effect of deviation with wearing corrected glasses, in patients still with deviation more than 10 PD at near or distance with the corrected glasses [5].

We did evaluate the stereoacuity at distance using Optec 3500 in the study. 722 (32.5%) subjects had 40–480 seconds of arc at distance, 996 (44.8%) had >480 seconds of arc, and 505 (22.7%) were uncooperative to the test.

We hope we have addressed all questions and made our result clearer.

Competing Interests

The authors declare no financial nor ethical/legal conflict of interests related to the paper.

References

O. Ayyildiz, O. M. Ceylan, and F. Mehmet Mutlu, “Comment on ‘Exotropia is the main pattern of childhood strabismus surgery in the south of china: a six-year clinical review’,” Journal of Ophthalmology, vol. 2016, Article ID 8251629, 1 pages, 2016.

X. Yu, Z. Ji, H. Yu, M. Xu, and J. Xu, “Exotropia is the main pattern of childhood strabismus surgery in the south of China: a six-year clinical review,” Journal of Ophthalmology, vol. 2016, Article ID 1489537, 5 pages, 2016.

K. W. Wright, “Extropia,” in Color Atlas of Strabismus Surgery Strategies and Techniques, p. 45, Springer Science+Business Media, LLC, 2007.

S. R. Hatt and L. Gnanaraj, “Interventions for intermittent exotropia (Review),” Cochrane Database of Systematic Reviews, Article ID D003737, 2006.

W. K. Wright, “Acquired esotropia, infant esotropia,” in Color Atlas of Strabismus Surgery Strategies and Techniques, pp. 18–40, Springer, Berlin, Germany, 2007.