The purpose of this study was to evaluate the effect of the Bernell EYEPORT II vision training system on accommodation in cases of accommodative insufficiency (AI). This was a prospective randomised study comparing the intervention of the EYEPORT II vision training programme plus conventional therapy vs a control group of conventional therapy only. Treatment was one hour / day for six days over four weeks with a total of 24 sessions. Follow-up visits were at two, four and 12 weeks. Of 230 potential participants, 193 were deemed eligible for screening, 171 met eligibility criteria and 36 were recruited: 19 males, 17 females, with median age of 27.5 years. At baseline, both groups were similarly matched for age, refraction and convergence insufficiency symptom score (CISS). At two weeks follow-up (after 12 sessions) both groups had changes in accommodation parameters including positive and negative fusional vergence at near and distance, amplitude of accommodation, accommodative lag, positive relative accommodation, accommodative facility and CISS. Differences were more significant for the intervention group. However, there was no significant difference in treatment outcomes between the groups. At final follow-up, CISS score improved slightly but with no signs of concern. For controls, amplitude of accommodation, lag, facility and positive relative accommodation changed significantly. There was more stability of treatment outcomes in the intervention group. Limitations of this study were acknowledged including small sample size. This study does not provide results for EYEPORT therapy alone as it was combined with conventional therapy. Further study is required for this aspect. Future research also requires larger sample size and longer follow-up periods.
Effects of two vision therapy approaches on accommodative insufficiency and post-therapy stability.
Manna P, Karmakar S, Mondal A, et al.
JOURNAL OF PEDIATRIC OPHTHALMOLOGY AND STRABISMUS
2025;62(1):12-26.
