It is there that the electrical impulses are interpreted into sight. Damage to the optic nerve interrupts this flow of visual information. In glaucoma, researchers believe that the ganglion cells of the retina, as well as the support cells within the optic nerve, can die for various reasons.
If you have had breast-conserving surgery, you need to continue to get mammograms. If you have had a mastectomy, you may not need a mammogram. Regardless of what breast cancer surgery you have had, you will still need to get mammograms of the unaffected breast. This is very important, because women who have had one breast cancer are at higher risk of developing a new cancer in the other breast.
1 Women up to age 75 should have a mammogram every 1 to 2 years, depending on their risk factors, to check for breast cancer.  Experts do not agree on the benefits of having a mammogram for women age 75 and older. Some do not recommend having mammograms after this age. Others recommend mammography for women in good health. Talk to your provider about what is best for you.