My father who is 83 years old has cataract in his right eye. He has been postponing the surgery for a long time. Last week his right eye suddenly shifted, started pointing about 45 degrees to the right of the normal orientation and he started seeing things double. Since his right eye does not see much, this is not a serious problem. However, the cataract has to be removed and after that he will really start seeing things double. In this situation, is it advisable or worthwhile to undergo cataract surgery? Will the eye shift correct itself? If not, what is the remedial action?