• Title/Summary/Keyword: Intermittent exotropia

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A Clinical Case of Vision Training for the Pediatric Intermittent Exotropia Combined with Vertical Deviation (수직편위를 동반한 간헐성외사시 소아에 대한 시기능 훈련 후 임상 사례)

  • Lee, Chang-Seon;Kim, Jae-Do;Son, Jeong-Sik;Kim, Dae-Nyoun;Jang, Woo-Yeong;Kim, Ki-Hong
    • Journal of Korean Clinical Health Science
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    • v.1 no.1
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    • pp.91-98
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    • 2013
  • Purpose: The purpose is to study the effects of the vision training, as a non-surgically treated vision therapy, on the objective and the subjective symptoms of the patients with intermittent exotropia combined with vertical deviation. Method: For the boys at the age of eight with intermittent exotropia, who report a long-distance blurred vision, dazzling, and intermittent diplopia more than ten times a day, the vision training had been practiced for seven weeks. The objective and subjective symptoms have been examined after six months from the end of the training. Results: The objective and the subjective symptoms have been improved after the seven weeks training and the improvements lasted after six months from the end of the treatment. Conclusion: Non-surgical treatment for the patients with intermittent exotropia, including intermittent exotropia combined with vertical deviation like this case, should be considered as an auxiliary treatment and on the preferential basis.

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A Case Study of the Effects of Vision Therapy on a Recurrent Intermittent Exotropia Patient Before and After Surgical Correction (간헐성외사시의 수술 전과 수술 후 재발 환자의 비젼세라피 효과 증례)

  • Lee, Chang-Seon;Kim, Ki-Hong
    • Journal of Korean Ophthalmic Optics Society
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    • v.14 no.1
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    • pp.127-131
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    • 2009
  • Purpose: The purpose of this case study is to study effect of the vision therapy on a recurrent intermittent exotropia patient before and after surgical correction. Methods: The vision therapy observation included both before and after the surgical correction of intermittent exotropia patients who had binocular vision disorder without opthalmic diseases. Results: According to the results, vision therapy method showed improvement, both case before and after the surgical correction of intermittent exotropia patients. Conclusions: Therefore we suggest that vision therapy is an effective and alternative method for intermittent exotropia patients.

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The Change in Binocular Function and Sensory Anomaly After vision Training on Intermittent Exotropia and Recurrent Intermittent Exotropia Patients After Surgical Correction (간헐성 외사시 및 외사시 재발환자에 대한 시기능 훈련 후 양안시 기능 및 감각이상 변화)

  • Lee, Chang-Seon;Kim, Jong-Ki;Shin, Jeong-Hoon;Kim, Dae-Nyoun;Lee, Hyun Mee;Kim, Ki-Hong
    • Journal of Korean Ophthalmic Optics Society
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    • v.16 no.3
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    • pp.345-350
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    • 2011
  • Purpose: This was a study of the effects of the vision training on binocular function and sensory anomaly for intermittent exotropia and recurrent intermittent exotropia patients. Mehtods: The change was examined weekly at the clinic during the 8 week vision training. The sample group of 17 patients, intermittent exotropia and recurrent intermittent exotropia patients without amblyopia, were chosen from the patients with the short and the long-distance deviation angle p=0.558 and p=0.338, and also greater than 10${\Delta}$, respectively. Results: The longdistance deviation angle was reduced by 67.9(${\pm}$32.7)%, and the short-distance deviation angle by 75.4(${\pm}$32.9)% after the vision training. There is an improvement on the binocular function and sensory anomaly according to the fusion reverse and Worth 4 dot tests. Conclusions: This study shows that the vision training is effective for phoria, function and sensory anomalyon of the intermittent extropia and recurrent intermittent exotropia patients.

A study on the effect of vision therapy after surgery for intermittent exotropia under 12 years of age (12세 미만 간헐성 외사시안의 수술 이후 시각훈련효과에 대한 임상연구)

  • Jang, Woo-Yeong;Lee, Seung-Wook
    • Journal of Korean Clinical Health Science
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    • v.9 no.2
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    • pp.1520-1525
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    • 2021
  • Purpose. This study conducted visual function training for children under 12 years of age who relapsed after surgery for intermittent exotropia. We are trying to find out whether the visual function has been improved by visual function training. Methods. After surgery, the subject with recurrent exotropia was given a prescription for refractive error, followed by visual function training and vision therapy with visual sence using prisms and lenses. Results. The subjects' positive relative convergence improved to 19.69𝚫, corrected visual acuity improved to 0.88, and stereoscopic vision function improved to 53.08 arc second. It was found that the smaller the angle of deviation at the time of recurrence after surgery, the better the vision therapy effect. Conclusions. It can be seen that visual function training is helpful in improving visual function, and the importance of visual function training can be known.

Comparison of Binocular Function and Surgical Outcomes of Tenacious Proximal Fusion and High Accommodative Convergence/Accommodation Ratio Types of Intermittent Exotropia

  • Park, Jun Woo;Lee, Soo Jung
    • Korean Journal of Ophthalmology
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    • v.32 no.6
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    • pp.483-487
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    • 2018
  • Purpose: To compare the characteristics and surgical outcomes in patients with tenacious proximal fusion (TPF) and high accommodative convergence/accommodation ratio (AC/A) types of intermittent exotropia. Methods: This study retrospectively enrolled 40 patients with intermittent exotropia, 23 with TPF and 17 with high AC/A. Binocular function was evaluated by Worth's 4-dot test. Patients underwent lateral rectus recession, and surgical outcomes were compared. Surgical success was defined as less than ${\pm}10$ prism diopters (PD) at 12 months postoperatively. Results: The proportion of diplopia at near, evaluated by Worth's 4-dot test, was significantly higher in patients with high AC/A than in those with TPF (35.3% vs. 4.3%, p = 0.029). The mean preoperative angles of deviation in TPF and high AC/A types were $28.3{\pm}4.4$ and $28.8{\pm}4.5PD$ at distances, and $14.7{\pm}4.2$ and $15.1{\pm}4.1PD$ at near. Twelve months after surgery, the mean angles of deviation in TPF and high AC/A types were $2.9{\pm}9.8$ and $1.2{\pm}9.6PD$, respectively, at distance and $1.7{\pm}7.7$ and $-1.3{\pm}11.3PD$ at near. The surgical success rates were similar in the TPF and high AC/A types (74.0% vs. 64.7%). Five (21.7%) patients with TPF and 2 (11.8%) with high AC/A type experienced recurrence, with consecutive esotropia occurring in 1 (4.3%) patient with TPF and 4 (23.5%) patients with high AC/A. Conclusions: The proportion of diplopia at near was higher in patients with high AC/A type than in those with TPF intermittent exotropia. However, the surgical success rates were not significantly different between the types.

Convergent evaluation of Visual function and Stereoacuity function after Surgery for Intermittent exotropia (간헐성 외사시 수술 후 시각 기능과 입체시 기능에 대한 융복합적 평가)

  • Cho, Hyung-Chel;Ro, Hyo-Lyun;Lee, Heejae
    • Journal of the Korea Convergence Society
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    • v.13 no.4
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    • pp.147-154
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    • 2022
  • This paper evaluated visual function and stereoacuity function after surgery for intermittent exotropia. Subjects of this study were 18 patients (male: n = 10, female: n = 8) mean aged 12.06±5.43 years diagnosed with intermittent exotropia who underwent strabismus surgery. Of these subjects, 72.2% of the subjects underwent strabismus surgery once and 27.8% had it twice. Visual function and stereoacuity function were tested for these subjects. For data analysis, frequency analysis, cross analysis, and correlation analysis were used, and statistical significance was set at p<.05. Regarding the deviation state after strabismus surgery, exodeviation accounted for the most(72.2%), followed by diplopia(50.0%) and suppression(33.3%) for distance sensory fusion. Regarding near sensory fusion, fusion(50.0%) accounted for the most, followed by diplopia(44.4%). After strabismus surgery, subjects with distance stereoacuity blindness were the most at 61.1% and there were no subjects with a normal range of 40-60 arcsec. Near stereoacuity blindness subjects accounted for 33.3% and subjects with 40-60 arcsec accounted for 1.1%. Even after surgery for intermittent exotropia, there were some areas that did not improve in deviation state, stereoacuity, or sensory fusion. Therefore, it is necessary to manage and control strabismus through non-surgical methods before and after surgery for intermittent exotropia.

Preschool children medium-long distance stereoscopic vision testing

  • Weiqiang, Zhao;Xiaowang, Qiao;Singh, Sukh Mahendra
    • Advances in Traditional Medicine
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    • v.4 no.2
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    • pp.120-123
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    • 2004
  • To test preschool children's medium- long distance stereoscopic vision normal average value, and intermittent strabismus children,s medium-long distance stereoscopic vision acuteness is the goal of this study. The software of random stereoscopic vision and graph, which is developed by Hu-Chong etc has been used, to test 414 cases normal preschool children and 19 cases intermittent exotropia childrens medium-long distance (1-5 m) stereoscopic vision (before operation and after operation). The normal average value of preschool children's medium-long distance stereoscopic vision was achieved. Intermittent exotropia children's stereoscopic vision acuteness was declined with the increase of distance. This method can provide reference as screening abnormal stereoscopic vision during scientific research and clinical work.

Effect of Overcorrection (-)Lens on Stereo-acuity and Angle of Deviation in Intermittent Exotropia (간헐외사시에서 과교정 (-)렌즈가 입체시 및 사시각에 미치는 영향)

  • Kim, Young Cheong;Park, Sang Woo
    • Journal of Korean Ophthalmic Optics Society
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    • v.18 no.3
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    • pp.305-311
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    • 2013
  • Purpose: This study was conducted to evaluate the effect of prescription of overcorrection (-) lens, which is the one of the non-surgical treatments, on stereo-acuity and angle of deviation in intermittent exotropia. Methods: Twenty four children with intermittent exotropia were enrolled from October 2011 to December 2011. The angle of deviation(${\Delta}$), stereo-acuity (arcsec), monocular and binocular visual acuity (BVA, LogMAR), control of exodeviation and fusional ability using Worth 4 dot test were evaluated at near (33 cm) and far (6 m), under the overcorrecting (-)lens of -1.00, -.00, and -.00 D. Results: As a baseline finding, the angle of exodeviation was $20.9{\pm}9.7$ at near and $23.0{\pm}7.5$ at far. The angle of exodeviation at near decreased to $18.5{\pm}10.0$ (p<0.01), $15.8{\pm}9.0$ (p<0.01), $14.0{\pm}9.1$ (p<0.01) compared with baseline angle of exodeviation at near, as increasing diopters of (-) lens from -.00 D, -2.00 D and -.00 D, respectively. The angle of exodeviation at far also decreased to $21.4{\pm}5.2$ (p=0.01), $19.6{\pm}6.3$ (p<0.01) compared with baseline, as increasing minus lens from -2.00 D and -3.00 D, respectively. However, BVA, control of exodeviation, fusional ability and stereo-acuity showed no significant decrease despite of increasing diopters of (-)lens. Conclusions: The prescription of overcorrection (-)lens is an effective therapeutic method in intermittent exotropia which can reduce the near and far angle of exodeviation, and binocular visual acuity and stereo-acuity maintained without significant decrease despite of application of overcorrection (-)lens.

A Study on the Effect of Intermittent Exotropia Vision Training Using Proprioceptive Test (Maindot test) (양안시 고유수용감각검사(Maindot 검사)를 사용한 간헐성 외사시안의 시기능 훈련효과에 대한 연구)

  • Lee, Chang-Seon;Bae, Youn-Joo;Kim, Jung-Bok;Kim, Ki-Hong
    • Journal of Korean Ophthalmic Optics Society
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    • v.21 no.3
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    • pp.243-251
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    • 2016
  • Purpose: This study evaluates the effectiveness of intermittent exotropia vision training through follow up of average 3 years using proprioceptive test (Maindot test). Methods: 35 people (18 men, 17 women) with mean age of 13.48 (${\pm}2.45$) with corrected visual acuity of 0.9 or higher and normal binocular vision and control were observed for changes between before, after, and 3 years following the vision training during the period from 2005 to 2009. Results: After training, the correlation between the changed amount of deviation and PRC(diplopia) value and symptoms was not significant (p>0.05). However, it showed a statistically significant (p<0.001) correlation that change of the binocular proprioceptive sense abilities is decreased subjective symptoms. Conclusions: Binocular proprioceptive sense may be used in variety of purposes and applications such as predictive evaluation of binocular symptoms, binocular function performance evaluation after vision training and prism treatment.

Trochlear Nerve Palsy Caused by Quadrigeminal Cistern Lipoma (사구수조지방종에 의한 도르래신경마비 1예)

  • Choi, Nam Hyeon;Kim, Won Jae;Kim, Myung-Mi
    • Journal of The Korean Ophthalmological Society
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    • v.59 no.11
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    • pp.1087-1090
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    • 2018
  • Purpose: To report a case of trochlear nerve palsy caused by quadrigeminal cistern lipoma located in the dorsal midbrain. Case summary: A 65-year-old male visited our clinic for intermittent vertical diplopia over 2-year period. Symptoms of diplopia had worsened over the past two weeks. He had no previous medical history except having had diabetes for 1 month. The best-corrected visual acuity was 20/25 in the right eye and 20/20 in the left eye. Pupillary examination was not remarkable. Extraocular examination showed 4 prism diopters (PD) left hypertropia at distant gaze and 4 PD exotropia at near gaze, with adduction elevation of the left eye. The Bielschowsky head tilt test revealed 6 PD left hypertropia on the left gaze and orthotropia on the right tilt. Fundus examination showed excyclotorsion of the right eye and incyclotorsion of the left eye. Brain magnetic resonance imaging revealed quadrigeminal cistern lipoma. Prism glasses were prescribed to alleviate diplopia, and we followed up the lesions without further treatment. Conclusions: Trochlear nerve palsy can be caused by quadrigeminal cistern lipoma; however, it is uncommon for this condition to be caused by a compressive lesion. Prompt neuroimaging can be helpful to rule out the causes of this condition in patients with atypical symptoms.