The normal axial length of the eye -: (A) 18mm, (B) 20 mm, (C) 28 mm, (D) 24mm
Answer is D. The length of the eyeball is approximately 24 mm, So the distances from the cornea / crystalline lens to the retina and the focal length of optical rays focused by the camera/crystalline lens propagating in the vitreous humor and imaging on the retina, are also about 24 mm