A Hospital-Based Study to Find Out the Prevalence of Non- Strabismic Binocular Vision Anomalies in Children with Hearing Impairment

Description

Abstract (English)

Abstract
Aim: The aim of the present study was to find out the prevalence of Non- Strabismic Binocular Vision Anomalies
in children with hearing impairment.
Methods: The study was conducted among hearing-impaired children in the Department of Ophthalmology,
Nalanda Medical College and Hospital, Patna, Bihar, India from April 2016 to Jan 2017. Children were included
in this study based on the inclusion and exclusion criteria of the study. Hearing-impaired students age ranges 8-
20 years were included in the study. Among a total of 103 children screened.
Results: When compared between severe and profound HI, there was no statistically significant difference in
NPA. The response of accommodation did not show a statistically significant difference when compared between
severe and profound HI. NRA and PRA values did not show any statistically significant difference when the
values were compared between subjects with severe and profound HI. Similarly, binocular and monocular AF
also did not show any significant difference when compared between subjects with severe and profound HI. There
was no statistically significant difference in NPC break and recovery, NFV break (distance and near), and PFV
break (distance and near) values when compared between the children with severe and profound HI.
Conclusion: Non-strabismus binocular vision anomalies were found among profound and severe hearingimpaired subjects. So, it is important to consider binocular evaluation among hearing-impaired subjects.