Among the participants, 16.0% (16 of 100) were APOE4 carriers, 8.7% (9 of 104) had diabetes, 73.1% (76 of 104) had hypertension, 34.6% (36 of 104) were smokers, and 40.4% (42 of 104) had undergone cataract surgery. This evidence concerns the gene APOE and diabetes mellitus.