Earlier studies have shown that it is possible to reduce the risk of macular degeneration with certain antioxidants Recent studies are interesting because thy have shown that natural measures can be used to in increase the retinas contents of important chemicals thereby decreasing the risk of macular degeneration

Could you correct the punctuation please?
Earlier studies have shown that it is possible to reduce the risk of macular degeneration with certain antioxidants. Recent studies are interesting because thy have shown that natural measures can be used to in increase the retina's contents of important chemicals, thereby decreasing the risk of macular degeneration.