Optometry Australia has warned that 3D movies may have dangerous effects on the vision of young children and people with impaired vision.
Luke Arundel, Optometry Australia's senior resident optometrist, said glasses required to screen movies in 3D can cause fatigue or irritation.
3D glasses work by filtering images so the left eye sees one image and the right eye sees a slightly different one. The brain then fuses them together to perceive a 3D image.
However for this to happen, the viewer's eyes must work well together. Where vision is underdeveloped or damaged, 3D glasses may cause fatigue or irritation.
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