Unifocal vs bifocal vs progressive glasses: Which one to choose?

The chief question that arises when choosing near and distance glasses is to which one to select. There is a major bunch of people who usually buy glasses due to recommendations or suggestions from peers without having adequate knowledge about them, and end up having asthenopic and adjustment issues. The main aim of this study is to give a basic idea of unifocal, bifocal glasses and progressive glasses, to compare their pros and cons and patient suitability according to various factors. While prescribing glasses there is no one-size-fits-all kind of solution. So this study gives an idea how a qualified person should give options wisely that is the best for them.