What is the length of optic nerve: (A) 20 mm, (B) 30 mm, (C) 40 mm, (D) 50 mm
Answer is D. Answer- D. 50 mmoptic nerve is about 47-50 mm in length and can be divided into 4 pas : -Intraocular pa (1 mm)Intraorbital pa (30 mm)Intracanalicular pa (5-9 mm)Intracranial pa (10 mm)