what does sph mean in the cyl box for prescription - SERP Analysis

https://valeriesaw.com/treatments/your-prescription-explained/

https://www.gogglesnmore.com/what-does-sph-appearing-under-cylinder-on-my-prescription-mean/?srsltid=AfmBOoqJtQTVheELXyOigpQMOFhpO380NlicTyNnfbJtkeYlzD98A8Al

https://rocketeyewear.com/blogs/news/how-to-read-your-prescription-for-glasses?srsltid=AfmBOoo8OcdQghxCgYQc8pW7KSI8XXrtubwd4ec_x82PeplUSsf2fr-2

https://www.reddit.com/r/optometry/comments/ne633w/i_was_wondering_why_it_says_sph_under_cylinder_if/

https://versanthealth.com/blog/how-to-read-your-eyeglass-prescription/

https://www.lenscrafters.com/lc-us/vision-guide/glasses-prescription

https://www.visiondirect.co.uk/eye-care-centre/understanding-your-contact-lens-prescription

https://www.aao.org/eye-health/glasses-contacts/how-to-read-eyeglasses-prescription

https://www.clarksoneyecare.com/eye-care-resources/contact-lenses/how-to-read-a-contact-prescription

https://help.jonaspauleyewear.com/en-US/how-do-i-read-my-childs-prescription-1096006

https://stoggles.com/blogs/the-public-eye/sph-meaning-what-is-it?srsltid=AfmBOoqzTn_a_G-Ej5TMtXqb4VTHe5M1bP8AbOA104SAPxaOfOnv8bIw