Figure 2. The effect of raised intraocular pressure-induced ischemia for 60 min and reperfusion for 21 days on the percentage of apoptotic (TUNEL positive) cell in rat retina. There is a significant decrease of apoptotic (TUNEL positive) cell (+) cells (***p<0.001) in the control retina compared to treatment groups (MEM, HBO, and BRI) in the left-side graphs. However, there is a significant increase of apoptotic cells (***p<0.001) in retinas subjected to ischemia/reperfusion compared to treatment groups in the right-side graphs. Error bars are ±SEM, where n=6.