Although the eye relief is long enough in case of the IOR and PZO, it is of limited use because when folding down the eye cups a metallic ring is exposed which could do harm to the eye-glasses.

• 虽然IOR和PZO的出瞳距离足够，但还是不适合戴眼镜使用，因为当翻下眼罩后，露出的金属圈，能划伤眼镜片。