Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Principal component analysis (PCA) plot of biochemical parameters measured in the lenses. AGEs: advanced glycation end-products; AR: aldose reductase; SOD: superoxide dismutase; CAT: catalase; AOPP: advanced oxidation protein products; TBARS: thiobarbituric acid reactive substances; NPSH: non-protein sulfhydryl groups; PC 1: principal component 1; PC 2: principal component 2.
