For good clarity go for quality lenses. Good lens prescription determines how clearly you will see with your lenses. The lenses you choose for your eye glasses even more than the frame determines how happy you are with your eye-wear.
You can avoid those thick lenses by going for ultra-thin lenses, is always wise to give children anti- scratch lenses and for field workers always use poly-carbonate lenses at the site.
Regular computer users should ensure they use computer lenses (anti reflection lenses) to avoid computer vision syndrome or they may also benefit from 100% blue color block lenses and this may also benefit those that work under intense sunlight. Ensure you choose wisely while going for prescription lenses. Look better, see clearly and be happy.