<prompt> The refractive power of emmatropic eye is50 D58D65 D68 D  <response>: 58-D 26-Khurana4rd The total dioptric power is 58 D, of which cornea contributes 43 D and the lens 15 DDimensions of an adult eyeballAnterior posterior diameter24 mmHorizontal diameter23.5 mmVertical diameter23 mmCircumference75 mmVolume6.5 mlWeight7 gm. 