The length of the eyeball is
Eyeball - Not a perfect sphere but an Ablate spheroid Dimensions of an adult eyeball Anteroposterior diameter - 24 mm Horizontal diameter - 23.5 mm Veical diameter - 23 mm Circumference - 75 mm Volume - 6.5 ml Reference : Khurana Ophthalmology; 4th edition Page 3
12mm
16mm
24mm
30mm
Anatomy, Development and clinical examination