Open eye meditation on 2 fixed objects..

Okay I have heard about a specific meditation thats supposed to develop the 3rd eye chakra. It consists of gazing at objects to the left and right of yourself with your eyes open obviously. The left eye looking at the left object and the right eye looking at the right object.

Although I have read about this, i'm not sure how the notion of looking at individual things with each eye (to the left and right) can be done.

Can anyone tell me if they know anything about this sort of meditation? about meditating by looking at an opposite direction with each eye. I have tried it but it seems impossible.

Any feedback would be appreciated thx.