Experience of PG interns/MS students.

If a Post graduation student of opthalmology checks eyes, are they competent to make correct diagnosis after trauma to the eyes as to if there is any inflammation on slit lamp or any damage to structures. Or atleast be competent enough to call senior resident to establish the right diagnosis if things are not clear completely, but not putting patients life at risk by delaying correct diagnosis which may result in future complications. I was checked up by a doctor in opthalmology emergency department. I dont know which year he is in or from which year duties start in the emergency..but He was probably a junior resident as he was being questioned by senior resident time and again for different matters. And sometimes first he checks the eyes, then senior checks the eyes. But in my case he did not take me to senior and only he checked my eyes. Are there also cases where even experienced doctors miss things? And rather junior residents give valuable inputs .