https://acrobat.adobe.com/link/track?uri=urn:aaid:scds:US:b4e8a211-ea54-3cca-b7db-bea38df5c65b
Read last paragraph on page 4 on left side you will see that we can deduce similarities based on the fact that abducens nerve controls the lateral rectus muscle and as usually in most organisms eye remains in the centre but to look for a predator lurking on the lateral extremities of the field(which I think they usually do to escape the prey's visual field) a quick and precise response from the muscle pulling the eye on the lateral side might help in spotting the predator quickly. So a separate nerve controlling the muscle might give the added control that one nerve controlling all the muscles might not be able to provide some similar explanation might be given for the superior oblique being controlled by the trochlear nerve.
Nirvighnam_noor OP t1_ivuc1wn wrote
Reply to comment by GeriatricZergling in CN IV AND VI evolution? by Nirvighnam_noor
https://acrobat.adobe.com/link/track?uri=urn:aaid:scds:US:b4e8a211-ea54-3cca-b7db-bea38df5c65b Read last paragraph on page 4 on left side you will see that we can deduce similarities based on the fact that abducens nerve controls the lateral rectus muscle and as usually in most organisms eye remains in the centre but to look for a predator lurking on the lateral extremities of the field(which I think they usually do to escape the prey's visual field) a quick and precise response from the muscle pulling the eye on the lateral side might help in spotting the predator quickly. So a separate nerve controlling the muscle might give the added control that one nerve controlling all the muscles might not be able to provide some similar explanation might be given for the superior oblique being controlled by the trochlear nerve.