Water Properties of Soft Contact Lenses: A Comparative Near-Infrared Study of Two Hydrogel Materials

Figure 4

Principal component analysis of hydrogel contact lenses. Spectral data presented on scores plot of PC1 factor and PC2 factor show the classification power of this technique. The plot shows good separation between the classes of VSO38 contact lenses (blue scores) and VSO58 contact lenses (green scores).