Research Article

Age of Rats Affects the Degree of Retinal Neuroinflammatory Response Induced by High Acute Intraocular Pressure

Figure 1

RGCs of aged retinae were more vulnerable to increased IOP than that of young adult retinae. Compared with the age-matched normal control (i, m), IOP treatment of 90 mmHg was sufficient to induce significant loss of RGCs in central (d, q) and peripheral regions (l, r) of young adult retina 3 days after treatment. Since IOP of 45 mmHg, the aged retina showed significant loss of RGCs in central (f–h, q) and peripheral regions (n–p, r). RGC loss in aged retinae was significantly higher than that of young adult retinae at each IOP treatment (q, r) ( versus age-matched control; , versus matched part of young adult retina at the same IOP treatment. Scale bar: 100 μm).