Some of the signs of retina damage from diabetes include blurry vision, flashing lights, dark spots in front of the eyes, pain in the eyes, or pressure and trouble with peripheral vision. If you have been diagnosed with diabetes and are experiencing any of these problems, see your ophthalmologist for a complete eye exam. People with Type I and Type II diabetes must limit their intake of carbohydrates. Certain carbohydrates, those rated low on the Glycemic Index, can be taken in smaller quantities. Those on the high scale should be avoided at all cost. People with Type II diabetes are generally diagnosed later in life. If, for example, a significant gain in weight caused a person to acquire Type II Diabetes, a proper diet and elimination of the obesity can reverse the condition of the disease. Weight control in diabetes management is not only essential in treating the disease, but can also actually reverse this potentially life threatening condition. Other symptoms of hypoglycemia include physical symptoms such as vomiting and abdominal pains as well as hunger. As hypoglycemia continues, neurological symptoms may include difficulty speaking, slurred speech, fatigue, anxiety, lethargy, delirium, headache, stupor, abnormal breathing and finally, coma. Another way on how to use the Glycemic Index is to learn which carbohydrates are better for those who are trying to either watch their carbohydrate intake or who are on a diabetic diet. Some foods, such as fruits and certain vegetables, are low on the glycemic index and take a longer time to absorb into the bloodstream, giving the body the benefit of the nutrients while allowing the body to expel the glucose in a more natural way. In 1977, modern technology in the treatment of diabetes took a giant leap as human insulin was cloned. Today, insulin to treat diabetes is human insulin and is much more effective than insulin used in the past. There are many different types of insulin on the market today and, as is the case with oral medications, it may take several different insulin types in order to find the correct balance that will insure good glucose levels.