Why we should not stand right in front of the idol for make prayers?

When children stand right in front of the idol, elders should reproach them and must ask them to move on to a side. In most of the temples, a fence is set up to avoid this. 

It is advisable to stand on the left or right, a little away from the area where the deity's
direct vision falls.

 The devotees may stand leaning 30 degree, with folded hands and make prayers.

 The magnetic rays or the Divine Grace emerging from the idol reach the devotee in the form of snake-like waves.
 At this time the devotee is supposed to stand folded hands, eyes closed and fully absorbed in meditation.

In doing so, the fingers that touch each other pass the energy so called Pranic energy (life
energy) from the brain vehemntally all over the body.

Each finger conveys normally different energies. As a result, our body receives physical strength, an alert intellect and self-confidence.

It is believed that in our custom "human body cannot bear the direct fall of rays emerging from the deity's idols as such. 
Hence it is advised that one should not stand right in front of the idols and make prayers.