Skip to main content
. Author manuscript; available in PMC: 2007 Jul 16.
Published in final edited form as: Invest Ophthalmol Vis Sci. 2007 Feb;48(2):652–660. doi: 10.1167/iovs.06-1007

Figure 1.

Figure 1

Protection of corneal epithelial cells from UV irradiation–induced apoptosis by caffeine. (A) Viability of HCE cells treated with UV irradiation in the absence or presence of caffeine. Cell viability was examined 16 hours after UV irradiation by using trypan blue exclusion. (B) Effect of caffeine on UV-induced DNA fragmentation. HCE cells were incubated with caffeine for 30 minutes at the concentration shown and then exposed to UV irradiation (42 μJ/cm2). DNA fragmentation was detected in HCE cells 8 hours after UV exposure. Statistical significance was determined at a CI level of P < 0.05 (n = 6).