The assistance of electronic visual aids with perceptual learning for the improvement in visual acuity in visually...

Area of Science:

• Ophthalmology
• Pediatric Vision
• Rehabilitation Medicine

Background:

• Visual impairment in children presents significant challenges.
• Perceptual learning (PL) shows promise for visual function improvement.
• Electronic visual aids (EVA) offer magnification for low vision support.

Purpose of the Study:

• To evaluate the efficacy of combining electronic visual aids (EVA) with perceptual learning (PL) for enhancing visual acuity in visually impaired children.
• To compare this combined approach against PL alone.

Main Methods:

• Twenty-eight children (ages 6-14) with moderate to severe visual impairment were assigned to two groups: PL with EVA (Group A) or PL alone (Group B).
• Training involved identifying inverted 'E' in crowding strings for 30 minutes daily over 6 months.
• Visual acuity (uncorrected, best-corrected, near) and refractive error were assessed at baseline, 3, and 6 months.

Main Results:

• Group A showed significant improvements in uncorrected, best-corrected, and near visual acuity after 3 months (p<0.05).
• Continued visual acuity progression was observed in Group A at 6 months (p=0.01, 0.02).
• Group B demonstrated limited improvement, with only uncorrected visual acuity showing a significant change at the first follow-up.

Conclusions:

• The combination of PL with EVA yields superior visual acuity improvements in visually impaired children compared to PL alone.
• This intervention strategy did not result in significant myopic shifts.
• The PL-EVA combination presents a novel and effective treatment and rehabilitation strategy for pediatric visual impairment.