Prescription glasses can be difficult to get right so adding a tint to the equation makes the options multiply.
Not only do you have to look at the, fit and vision but you also have to consider the tint and what sunglass shape do we require.
What are the sunglasses going to be used for?
Leisure/holidays
Job/ working environment
Sport
These sections can then be broken down further;
Would you wear your sunglasses in winter for driving when the suns low in the sky?
Do you go on holiday in hot climates? Skiing?
Do you do social biking, running, exercise?
Most buyers will look at style first; ask yourself if you would wear the sunglasses if they werent prescription? Or are you choosing the best one out of a bad bunch? Some opticians are scared of doing large, wrap around frames.
Decide what type of sunglass you prefer the look of.
Although practices may tell you that certain shapes suit specific shaped faces do not get transfixed on this as iconic styles can be far more powerful than this statement. The Ray ban aviator if you go on face shapes probably wouldnt suit many people, but it looks cool on everyone!
Once youve picked the prescription sunglasses frame dont think it finishes there, the tint is equally. Again in this category its often down to style, do you want to match the sunglasses tint that comes as non-prescription?
Make sure your lenses are supplied with 100% UV block.
Polarised lenses are becoming popular now, protecting you from 98% of glare and transition lenses still remain popular.