vertex diopter

例句：

1. 1. The vertex diopter ofthe lens is crucial for its focal length.
   透镜的顶点折射率对其焦距至关重要。
2. 2.The vertex diopter of thelens determines the image quality.
   透镜的顶点折射率决定了图像质量。
3. 3. The vertexdiopter of the lens affects theoptical performance.
   透镜的顶点折射率影响了光学性能。