difference between esr and ipd

[voxyzz]

can someone tell me difference between esr and ipd ? isnt it basically same thing

 

[ENAHGY]

can someone tell me difference between esr and ipd ? isnt it basically same thing

Esr is eye spacing ratio so basically the distance between ur eyes in comparison to ur eye length. Ipd is interpupulary distance so just the raw distance between ur pupils