Effects of virtual distant viewing technology on preventing nearwork-induced ocular parameter changes

Area of Science:

• Ophthalmology
• Optometry
• Virtual Reality Technology

Background:

• Prolonged near work is associated with ocular changes, including myopia progression and visual fatigue.
• Traditional near work methods may induce detrimental changes in ocular parameters.

Purpose of the Study:

• To investigate the efficacy of virtual distant viewing technology in preventing near work-induced ocular parameter changes.
• To compare the effects of traditional textbook reading versus virtual distant viewing on visual parameters.

Main Methods:

• Twenty-six volunteers participated in a randomized crossover study.
• Participants engaged in 4 hours of near work using either a textbook or a virtual distant viewing display.
• Ocular parameters, including visual acuity, refractive error, corneal thickness, anterior chamber depth, accommodative function, and visual fatigue, were measured before and after each session.

Main Results:

• The textbook group showed significant increases in visual fatigue and changes in refractive error, corneal thickness, and anterior chamber depth.
• The virtual distant viewing group exhibited increased accommodative facility, positive relative accommodation, and amplitude of accommodation.
• While both groups experienced increased visual fatigue, the virtual distant viewing group did not show significant changes in refractive error, corneal thickness, or anterior chamber depth.

Conclusions:

• Virtual distant viewing technology can effectively prevent myopia progression associated with near work.
• This technology enhances accommodative function without exacerbating visual fatigue.
• Virtual distant viewing presents a viable alternative for near work activities to mitigate adverse ocular effects.