- 双眼皮 shuāngyǎnpí double eyelid; double eyelidsan upper eyelid with a natural crease, making it appear to have two layers
- 双眼望远镜 shuāngyǎnwàngyuǎnjìng binocularsbinoculars; binocular telescope
- 双眼视觉 shuāngyǎnshìjué binocular visionThe ability to maintain visual focus on an object with both eyes at the same time