Cataract surgery is the most often performed surgery on human body. It is done with such safe precision and technique that there is nothing to worry. Just choose a good surgeon. Early cataracts may not progress rapidly. It is operated when it starts bothering your eyesight, and you have difficulties to do your day-to-day job. Don't wait till it becomes mature, when your eyesight is literally zero. Your redness symptoms have nothing to do with cataract. Don't use the antibiotics in the eye for a long time. Try using tear substitutes. Only in children we do the cataract surgeries together, in adults we give a gap of one day that is they can be done on consecutive days, extremely safely.