- The Energy Transferred From The Anterior Chamber Of The Eye Through The Cornea Varies Considerably Depend Ing On Whethe 1 (258.72 KiB) Viewed 60 times
The energy transferred from the anterior chamber of the eye through the cornea varies considerably depend- ing on whether a contact lens is worn. Treat the eye as a spherical system and assume the system to be at steady state. The convection coefficient h, is unchanged with and without the contact lens in place. The cornea and the lens cover one-third of the spherical surface area. Values of the parameters representing this situation are as follows: To, hi ki T., he Anterior chamber kz Cornea Contact lens ri = 10.2 mm, r2 = 12.7 mm, r3 = 16.5 mm, T20,0 = 21 C,T.,i = 37 C, k2 = 0.80 W/mK kı = 0.35 W/mK, ho = 6 W/m²K, hi = 12 W/m²K. (a) Construct the thermal circuits, labeling all potentials and flows for the systems excluding the contact lens and including the contact lens. Write resistance elements in terms of appropriate parameters. (b) Determine the heat loss from the anterior chamber with and without the contact lens in place. (c) Discuss the implications of your results.