And the monitor should be slightly tilted back (about 10Â° - 15Â°) so that when you are looking at the center of the screen your line of sight is perpendicular to the surface of the screen.f only the lower portion of your glasses will allow you to see the monitor in focus, then obviously the monitor should be located at a height that will allow you to maintain your head at a comfortable vertical position which does not go beyond 90Â° (i.e. bending your head back).
The long ciliary nerves provide sensory innervation to the eyeball, including the cornea. In addition, they contain sympathetic fibers from the superior cervical ganglion to the dilator pupillae pupillÃ¦. musclehe sympathetic fibers to the dilator pupillae muscle mainly travel in the nasociliary nerve but there are also sympathetic fibers in the short ciliary nerves that pass through the ciliary ganglion without forming synapses.
Relaxation of the ciliary muscle puts tension on these fibers and changes the shape of the lens in order to focus light on the retina. The inner layer is transparent and covers the vitreous body, and is continuous from the neural tissue of the retina.elaxation of the ciliary muscle puts tension on these fibers and changes the shape of the lens in order to focus light on the retina. The inner layer is transparent and covers the vitreous body, and is continuous from the neural tissue of the retina.