The arrangement pattern of the retinula in the right, left compound eye and dorsal, ventral regions of the compound eye are the mirror image inversion.
家蝇的左复眼与右复限、复限的背区与腹区中，小网膜细胞呈镜像对称排列。
2
Conclusions: the medial pedal flap pedicled with the above axis vessels can be used for the repair of skin defects at the dorsal, plantar, heel and the malleolar regions.