Randomized Controlled Trial of Patching versus Dichoptic Stimulation Using Virtual Reality for Amblyopia Therapy.

Area of Science:

• Ophthalmology
• Neuroscience
• Medical Technology

Background:

• Amblyopia, or "lazy eye," affects visual development and can persist into adulthood.
• Traditional amblyopia treatment often involves patching the stronger eye to encourage use of the weaker eye.
• Virtual reality (VR) offers a novel approach for dichoptic stimulation, potentially enhancing amblyopia therapy.

Purpose of the Study:

• To compare the efficacy of virtual reality (VR) dichoptic stimulation with traditional patching for treating moderate and severe amblyopia.
• To evaluate visual acuity (VA) and stereoacuity outcomes in amblyopic patients undergoing VR treatment versus patching.

Main Methods:

• A randomized study involving 86 subjects with unilateral amblyopia (anisometropic and mixed).
• Participants were assigned to either a VR group (10 weeks of weekly 2-hour sessions) or a patching group (10 weeks of patching).
• Best-corrected visual acuity (BCVA) and near stereoacuity were measured at baseline, after 10 weeks, and after a 10-week follow-up post-treatment.

Main Results:

• Both VR and patching groups showed statistically significant improvements in BCVA.
• No significant differences in VA outcomes were observed between the VR and patching groups overall at any time point.
• However, adults and individuals with severe amblyopia in the VR group demonstrated greater VA improvement compared to their counterparts in the patching group.

Conclusions:

• Virtual reality dichoptic treatment provides a statistically significant improvement in visual acuity for amblyopia patients.
• The visual acuity gains achieved with VR dichoptic therapy are comparable to those of traditional patching.
• VR dichoptic treatment may offer specific advantages for visual improvement in adult and severe amblyopia cases.