One of the superstitions with respect to boy born in Rohini star is that the mother's brothers would have ill effects. Also the mitigation of ill-effect is supposed to be, by not looking at the boy directly. They see the son in a reflection of oil.
Now, let us get to the reason for this superstition. Kanha / Krishna killed his own uncle Kamsa for his bad deeds.
Can't we look at the moral of this story, rather than come to superstitious conclusions? In our culture the maternal uncles are placed in high pedestal and given lot of importance. The relationship is special. The moral to be learnt here is that any person should be willing to punish a person doing ill deeds against self or family, even if the person happens to be own maternal uncle. That is the moral that people should learn from the story of Krishna & Kamsa. Hope the superstition dies out some day... and sons born in Rohini star are boldly looked at by their maternal uncles...
And anyone born in any star be bold enough to punish even revered persons if the mistake is grave and against the self or family.