The city is also served by Oklahoma State Highway 6, which connects Elk City with Altus to the south, and Oklahoma State Highway 34, connecting Elk City with Woodward to the north. The Elk City Regional Business Airport is located in the northeast part of the city, 1.5 miles (2.4 km) from the Interstate.
The optic disc is shaped like a doughnut with a pink neuroretinal rim and a central white depression called the physiologic cup.Check out the color of the neuroretinal rim, which carries the axons of the retinal ganglion cells. It should be orange-pink. If its axons die, the rim will turn white.he optic disc is shaped like a doughnut with a pink neuroretinal rim and a central white depression called the physiologic cup.
1 The axons arise from ganglion cells of the retina, which converge at the optic disc and run through the optic nerve to synapse in the lateral geniculate nucleus of the brain. 2  The optic disc (also known as the optic nerve head) is approximately 1.5 millimeters in diameter.laucoma is a degenerative disorder of the optic nerve. It is characterized by a loss of ganglion cells and their axons. There are several types of glaucoma (e.g., open-angle, normal tension, and early onset-to name a few); however, all of these types have the same common feature, ganglion cell loss.