At Optika we have a variety of off the shelf Reading and Non-Prescription Blue Filter Glasses available in different styles and colours. Although such glasses are generally considered safe and provide a quick solution to correcting near vision issues, an individual prescription, as determined by an optometrist usually results in better visual correction reducing eye strain and other visual symptoms you may be having and the blue filter glasses have a coating specially developed for people who spend a lot of time indoors and are exposed to the blue-violet and LED light of digital devices like smartphones, TVs, and tablets. These readers and the Blue Filter Glasses are one size fits solution and lenses are not centred according to ones pupillary distance.
  In addition both lenses are of the same power and unsuitable for those whose right eye prescription differs from the left eye. These readers do not correct any astigmatism. We always recommend that you have a pair of reading glasses custom made for you, to your prescription. So before using these readers do consult your optometrist.