Prevalence of Non Strabismic Binocular Vision Disorder in College Student


Authors : Animesh Mondal; Soumiya

Volume/Issue : Volume 5 - 2020, Issue 12 - December

Google Scholar : http://bitly.ws/9nMw

Scribd : https://bit.ly/3hj7A67

Several studies have reported a high prevalence of accommodative and vergence anomalies in the university student’s population in different states of India. Their findings were diverse owing to differences in diagnostic techniques and the criteria used to define the variables. Different type of influential factors and geographical variation has also an impact on their variable result. This current study is aimed to assess find the prevalence of non-strabismic binocular vision disorder (NSBVD) in a randomised population of college students in Mangalore, India. A randomized sample of 600 college students (300 males and 300 females), aged 18-23 years were included in this cross-sectional study. To evaluate the prevalence of NSBVD all the subjects undergone through a comprehensive ophthalmic examination including visual acuity testing, assessment of anterior and posterior segment, assessment of ocular motility and binocular vision. Prevalence of NSBVD in college students is 76.5%. Convergence insufficiency was the most prevalent (27.5%) in college students followed by convergence excess (24%) and Accommodative Insufficiency (22.5%) among all type of NSBVD. Prevalence of NSBVD is more in females than male. Early detection of NSBVD is important because without treatment these disorders may lead to strabismus resulting in loss of stereopsis and development of suppression. If any accommodative of vergence disorder is found, then effective treatment should be prescribed immediately. Timely identification and proper treatment of NSBVD will allow a student to performing at his or her full potential.

Keywords : Accommodative Dysfunction; Prevalence; Convergence insufficiency; Non Strabismic Binocular Vsion Disorder; Vergence Dysfunction; Convergence Excess.

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