The erythrocyte count (p = 0.046) in the SVD subgroup was lower than that in the ND subgroup, whereas in the PVD subgroup, there was a decline in the erythrocyte count (p = 0.006) and Hb level (p = 0.008) as well as an increase in hs-CRP (p = 0.003) and ALP levels (p = 0.033). The gene discussed is GSTM1; the disease is snowflake vitreoretinal degeneration.