Histophotograph showing the optic nerve head of a highly myopic eyes with the peripapillary arterial circle of Zinn-Haller (red arrow), located the merging point of the dura mater (black arrows) with the scleral at the end of the peripapillary scleral flange (between green arrows), the pia mater and the peripapillary ring as the continuation of the pia mater (between yellow arrows).

Abstract

<p>Histophotograph showing the optic nerve head of a highly myopic eyes with the peripapillary arterial circle of Zinn-Haller (red arrow), located the merging point of the dura mater (black arrows) with the scleral at the end of the peripapillary scleral flange (between green arrows), the pia mater and the peripapillary ring as the continuation of the pia mater (between yellow arrows).</p