Author :
Alpa ., DP Gupta, Rakesh Gupta, Alpa ., DP Gupta, Rakesh Gupta, Alpa ., DP Gupta, Rakesh Gupta, Alpa ., DP Gupta, Rakesh Gupta
Volume :
11
Issue :
3
Abstract :
Background: Previous studies reported that non strabismic binocular vision anomalies are mainly associated with near work. These anomalies are mainly associated with symptoms which impact the daily living activities. Therefore, diagnosis and treatment for these conditions is main concern.Aim and Objective: To assess the effect of HTS2 computer vision therapy in young adults with convergence insufficiency (CI) and co-existing accommodative dysfunction.Materials and Methods: This was a single center, prospective and experimental study. In this study, 25 subjects (age: 18-35 years) with combined (CI) and accommodative excess (n=18) or combined CI and AI (n=7) were diagnosed. Subjects were assigned to HTS2 vision therapy for 4 days per week for a period of one month. After one month of therapy, vergence parameters such as near exophoria, near point of convergence (NPC), near positive fusional vergence (PFV), vergence facility (VF) and accommodative parameters such as amplitude of accommodation (AA), negative relative accommodation (NRA), positive relative accommodation (PRA), monocular accommodative facility (MAF), accommodative response (MEM) and convergence insufficiency symptom survey questionnaire (CISS) scores using CISS V-15 questionnaire were recorded. Data analysis was performed using Wilcoxon Sign Rank Test.Results: At baseline, there was not statistically difference in mean values of vergence, accommodative parameters and CISS scores. After one month of therapy, there was statistically significant difference found in the mean values of vergence, accommodative parameters and CISS scores. (p < 0.05).Conclusion: HTS2 vision therapy is found to be an effective treatment for improving vergence, accommodative function and alleviating the symptoms in the patients with CI and co-existing accommodative dysfunction and is recommended when in-office exercises is not possible.
Keyword :
Convergence insufficiency, Accommodative dysfunction, Office-based vision therapy, HTS2.