Magimodac Blue Light Filter Reading Glasses With Ultralight Tr90 Frame Women Men Computer Reading Aid Half Glasses Half Frame Visual Aid With Glasses Case For Men And Women health_UK_Nov2022 Color: Blue NASOPHARYNGEAL AIRWAY A Size:#22 Color: Blue NASOPHARYNGEAL AIRWAY A Nasopharyngeal Airway is recommended for use as an airway adjunct in the semi conscious or unconscious patient with an intact gag reflex Read more Detailed Guide Lines With various metric and imperial guidance lines and detailed angles printed on both sides of the mat to choose from Wear these computer blue light filter reading glasses to protect your eyes from long term damage and you can sleep better You could have it measured at an optician or you can go to a supermarket and test the reading glasses once