[Comparative evaluation of morphometric and intravital measurements of the intraorbital portion of the optic nerve and of the distance from the posterior pole of the eyeball to the common tendinous ring]. / Sravnitel'naia otsenka morfometricheskikh i prizhiznennykh izmerenii intraorbital'noi chasti zritel'nogo nerva i rasstoianiia ot zadnego poliusa glaznogo iabloka do myshechnogo sukhozhil'nogo kol'tsa.

The paper describes results of comparative assessment of morphometric and in vivo measurements of the intraorbital part of the optic nerve and the distance from the posterior pole of the eye ball to the muscular tendon ring. It is shown that the method of ultrasound scanning is accurate enough and may be used for measuring the length of the intraorbital part of the optic nerve and the distance from the posterior pole of the eye ball to the muscular tendon ring in each concrete case.