Fig. (3-12) The inferior rectus muscle, inferior oblique muscle and its nerve, the LERs and the medial and lateral recti muscles and their check ligaments (including the medial rectus CPF (mrCPF) and lateral rectus CPF (lrCPF) are visualized. The medial rectus CPF is obscure in this figure. LRM: lateral rectus muscle, CPH: capsulopalpebral head, IOM: inferior oblique muscle, IRM: inferior rectus muscle, MRM: medial rectus muscle.