Do ENT can tell if you have destroyed Ear drums by just looking inside by using a flashlight?

I went to ENT and I had a mini cys on my ear and after so many doctors saying they dont feel it. This doctor said he can feel it but its very tiny and he checked my ears asked if there's pain there's bleeding I said no to all he then used a flashlight gun where doctor can check inside of your eyes to see the inside of it I don't know what is called. And he said my diagnosis is just my ears are okay and what Im just feeling is just muscle part of jaw that I thought is tiny bump on my ear. So am Im asking can they tell it if you have destroyed eardrum just by using that gun flashlight to check your ear inside?
Do ENT can tell if you have destroyed Ear drums by just looking inside by using a flashlight?
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