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

Norliza Mohamad Fadzil, Zainora Mohammed, Mizhanim Mohamad Shahimin and Noor Haziq Saliman
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Norliza Mohamad Fadzil: Program of Optometry and Vision Science, Faculty of Health Sciences, Universiti Kebangsaan Malaysia Kampus Kuala Lumpur (UKMKL), Jalan Raja Muda Abdul Aziz, Kuala Lumpur 50300, Malaysia
Zainora Mohammed: Program of Optometry and Vision Science, Faculty of Health Sciences, Universiti Kebangsaan Malaysia Kampus Kuala Lumpur (UKMKL), Jalan Raja Muda Abdul Aziz, Kuala Lumpur 50300, Malaysia
Mizhanim Mohamad Shahimin: Program of Optometry and Vision Science, Faculty of Health Sciences, Universiti Kebangsaan Malaysia Kampus Kuala Lumpur (UKMKL), Jalan Raja Muda Abdul Aziz, Kuala Lumpur 50300, Malaysia
Noor Haziq Saliman: Program of Optometry and Vision Science, Faculty of Health Sciences, Universiti Kebangsaan Malaysia Kampus Kuala Lumpur (UKMKL), Jalan Raja Muda Abdul Aziz, Kuala Lumpur 50300, Malaysia

IJERPH, 2019, vol. 16, issue 23, 1-7

Abstract: 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.

Keywords: null zone; infantile nystagmus; compensatory head posture; reading (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2019
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