A perfect pair of glasses can significantly improve the quality and clarity of your vision. And therefore, buying a perfect pair of glasses is a good investment and worth every penny you spend. Similarly, any discomfort due to wrong pair of glasses can lead to eye strain, imperfect vision, focusing problems, headache and other such issues. In odder to get perfect pair of glasses, you need to ensure four important components that makes a perfect pair of glasses. These four factors are : Perfect Refraction  –   Your Spectacle Lens Number. Perfect Frame  –   Comfortable And Correct size of the Spectacle Frame. Perfect Spectacle Lens  –   Lens tailor made  to your spectacle lens number. Perfect Spectacle Lens Fitting  –  Fitting will ensure correct positioning of lens.