If your doctor advises you to wait, they are likely just waiting for the cataract to significantly interfere with your vision and lifestyle. This is because a cataract typically starts off as very small and practically unnoticeable. But as time goes on, it may grow larger, clouding your vision.
For this reason, it’s important to see your eye doctor regularly to monitor your cataract’s progress. It may be that your cataract never reaches the stage of removal. However, if it begins to interfere with activities, such as driving, then it’s time to talk about surgery.