Figure 3. Stress resultant – strain of Aca23, age-matched WT, and younger WT in two different regions and in two different directions. Graph of stress resultants and strains in Aca23 (black), age-matched WT (blue) and younger WT (red) eyes from inflation testing. Data were analyzed from region 2–3 in the circumferential direction (A) and the meridional direction (B). Likewise, data were analyzed from region 4 in the circumferential direction (C) and the meridional direction (D). In region 2–3, the Aca23 eyes had significantly lower strain than age-matched and younger WT at several pressure levels in the circumferential and meridional directions. In Region 4, the Aca23 eyes showed significantly lower strain than both WT groups in the circumferential, but not the meridional direction. For statistical analysis, please see Results.