scholarly journals Visual Acuity Improves in Children and Adolescents With Idiopathic Infantile Nystagmus

2019 ◽  
Keyword(s):  
Visual Acuity ◽  
Children And Adolescents ◽  
Infantile Nystagmus

Distance and Near Visual Acuity in Infantile Nystagmus

2006 ◽  
Vol 83 (11) ◽  
pp. 823-829 ◽  
Author(s):  
KARA S. HANSON ◽  
HAROLD E. BEDELL ◽  
JANIS M. WHITE ◽  
MICHAEL T. UKWADE
Keyword(s):  
Visual Acuity ◽  
Infantile Nystagmus ◽  
Near Visual Acuity

Grating Visual Acuity in Infantile Nystagmus in the Absence of Image Motion

2014 ◽  
Vol 55 (4) ◽  
pp. 2682 ◽  
Author(s):  
Matt J. Dunn ◽  
Tom H. Margrain ◽  
J. Margaret Woodhouse ◽  
Fergal A. Ennis ◽  
Christopher M. Harris ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Image Motion ◽  
Infantile Nystagmus

scholarly journals The specific clinical features of congenital aniridia in the childhood

2016 ◽  
Vol 11 (3) ◽  
pp. 121-129 ◽  
Author(s):  
Anna Aleksandrovna Voskresenskaya ◽  
N. A Pozdeyeva ◽  
T. A Vasil'eva ◽  
O. V Khlebnikova ◽  
R. A Zinchenko
Keyword(s):  
Visual Acuity ◽  
Children And Adolescents ◽  
Newborn Infants ◽  
Federal State ◽  
Ophthalmological Examination ◽  
State Institute ◽  
Familial Type ◽  
Congenital Aniridia ◽  
Foveal Hypoplasia ◽  
And Gender

Aim. The objective of the present study was to elucidate the specific features of the clinical picture of congenital aniridia in the children and adolescents and determine the frequency of complications of this pathology in the Russian Federation. Materials and methods. The study involved 37 children and adolescents at the age below 18 years (74 eyes) who were recruited from 37 unrelated families and diagnosed as having congenital aniridia at the Cheboksarsky branch of S.N. Fedorov Federal State Institute of Eye Microsurgery. All the children underwent the comprehensive ophthalmological examination based at this institution that included determination of the patients’ age and gender, diagnostics of keratopathy, cataract and glaucoma, measurements of foveal hypoplasia and hypoplasia of the optical nerve. In addition, visual acuity (VA) and the type of refraction were determined, gonioscopy and central keratopachymetry were performed on each patient. Results. The age of the patients varied from 2 months to 18 years (median: 3 years). The familial type of inheritance of congenital aniridia was documented in 16 patients whereas sporadic cases of this pathology were detected in 21 (56.7%) children. Microcornea and microphthalmus occurred in 4 and 2 eyes respectively. WAGR syndrome was diagnosed in 9.5% of the patients presenting with sporadic aniridia. Visual acuity was estimated at => 0.1 in 52% of the cases; it was => 0.3 in three patients. Abnormal refraction was documented in 88.3% of the children, marked hypermetropia was diagnosed in 15% of the examined eyes. The signs of aniridic keratopathy in the newborn infants and young children(aged below 3 years) were found in 64% of the cases. The youngest age at which the signs of aniridic keratopathy were apparent was 14 months. Cataract of different severity was documented in 77% of the eyes, glaucoma in 22.6%, foveal hypoplasia in 94%, and nystagmus in 86.5% of the eyes. The thickness of the central cornel region in the children at the age from 6 months to 2 years was 635+-47 microns compared with 606+-43 microns in the patients from 3 to 18 years of age. Conclusion. Congenital aniridia is a progressive panocular pathology affecting various structures of the eye and leading to the impairment of the visual function from the very early life.

scholarly journals Beyond Visual Acuity: Development of a Simple Test of the Slow-To-See Phenomenon in Children with Infantile Nystagmus Syndrome

2020 ◽  
Vol 46 (2) ◽  
pp. 263-270
Author(s):  
Ruaridh Weaterton ◽  
Shinn Tan ◽  
John Adam ◽  
Harneet Kaur ◽  
Katherine Rennie ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Simple Test ◽  
Infantile Nystagmus Syndrome ◽  
Infantile Nystagmus

scholarly journals Author Response: Grating Visual Acuity in Infantile Nystagmus in the Absence of Image Motion

2014 ◽  
Vol 55 (8) ◽  
pp. 4955
Author(s):  
Matt J. Dunn ◽  
Tom H. Margrain ◽  
J. Margaret Woodhouse ◽  
Fergal A. Ennis ◽  
Christopher M. Harris ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Image Motion ◽  
Author Response ◽  
Infantile Nystagmus

scholarly journals Reading Performance and Compensatory Head Posture in Infantile Nystagmus after Null Zone Training

2019 ◽  
Vol 16 (23) ◽  
pp. 4728
Author(s):  
Norliza Mohamad Fadzil ◽  
Zainora Mohammed ◽  
Mizhanim Mohamad Shahimin ◽  
Noor Haziq Saliman
Keyword(s):  
Visual Acuity ◽  
Contrast Sensitivity ◽  
Visual Function ◽  
Reading Time ◽  
Reading Rate ◽  
Reading Performance ◽  
Head Posture ◽  
Infantile Nystagmus

This study aimed to assess the visual function, reading performance, and compensatory head posture (CHP) in schoolchildren with infantile nystagmus. A total of 18 participants aged between 13 to 18 years old were divided into spectacle (n = 9) and null zone group (n = 9) based on their visual acuity. Visual acuity (LogMAR), contrast sensitivity (Pelli–Robson), reading time and rate (Tobii TX300), and CHP were measured pre and post null zone reading training. Participants in the null zone group received 10 sessions of training (5 weeks). Visual acuity and contrast sensitivity of participants in the spectacle and null zone groups were not significantly different pre and post training. Reading performance, i.e., reading time (z = −1.36; p = 0.173) and reading rate (z = −0.06; p = 0.953), of participants in the spectacle group was not significantly different after 5 weeks. Reading time (z = −2.55; p = 0.011) and reading rate (z = −2.07; p = 0.038 of participants in the null zone group showed significant improvement post training. After 5 weeks, CHP improved in six out of the nine participants (66.7%) of the null zone group and was unchanged in all participants in the spectacle group. Null zone reading training could benefit children with infantile nystagmus in improving reading performance and compensatory head posture.

scholarly journals Risks of developing diseases of an eye and its adnexa in students in conditions of the violation of hygienic rules for the use of electronic devices

2021 ◽  
Vol 100 (3) ◽  
pp. 279-284
Author(s):  
Nataliya A. Skoblina ◽  
Valery I. Popov ◽  
Alexey L. Eryomin ◽  
Svetlana V. Markelova ◽  
Olga Yu. Milushkina ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Young People ◽  
Children And Adolescents ◽  
Preventive Measures ◽  
Electronic Devices ◽  
Educational Process ◽  
Daily Routine ◽  
Ophthalmological Examination ◽  
Continuous Work ◽  
Continuous Use

Introduction. The process of involving children, adolescents and youth in the constantly developing information space is an objective reality. At the same time, the lack of monitored indices of the safety of electronic devices (ED) for the health of children and adolescents, the lack of a clearly built system of preventive measures require its development and improvement, which will reduce the risk of the digital information environment impact on the health of the younger generation. Materials and methods. The survey using a questionnaire, developed by specialists from the Research Institute of Hygiene and Health Protection of Children and Adolescents in 2017-2020, was used to collect data on the nature of ED using by schoolchildren and students in educational and leisure activities (1218 questionnaires). In 2017-2020, 805 schoolchildren and students from the Moscow gymnasium №12 and the Pirogov Russian National Research Medical University underwent an ophthalmological examination. Results. All the surveyed schoolchildren and students used ED. Analysis of the questionnaire data allowed us to determine the duration of continuous use of ED (computer, laptop, tablet, smartphone, etc.) by children, adolescents, and young people during school and vacation time. All categories of respondents both during the academic period and during holidays showed a high duration of continuous use of ED. Thus, the presence of a behavioral risk factor for the uncontrolled use of ED (long duration of continuous work with ED) was shown among all categories of respondents, which may cause the development of eye diseases. The analysis of the results obtained revealed significant negative values of the correlation coefficients between students’ visual acuity and the duration of their continuous use of both stationary (computer) and mobile (smartphone, tablet) ED. Discussion. The introduction of these preventive measures into the daily routine and lifestyle of children, adolescents, and young people will help prevent visual acuity disorders. Conclusion. It is necessary to introduce hygienic rationing of the frequency and duration of the possible influence of ED not only during the educational process but also in leisure time to increase the awareness of parents and the degree of their control over the use of ED. To elevate awareness of all ED users’ categories it is necessary to intensify work to promote the rules for the safe use of ED and related foundations of a healthy lifestyle and self-control over ED use. In connection with the development of the digital educational environment, it is advisable to improve the hygienic standardization of text information in electronic publications for children, adolescents, and students. To prevent the symptoms of eye fatigue, it is advisable to limit continuous work with a bright screen (no more than 60 minutes), followed by a break of at least 15-20 minutes, not related to viewing the illuminated screen, in compliance with the recommendations for relieving stress from the visual analyzer.

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