Sergei_T

Diopter to radius conversion and vice versa

The Effective Lens Position calculator

Vertex conversion for optometrists and refractive surgeons

Simple plus / minus cylinder conversion

More than 5000 moving stars on your screen, fully randomized space. Tap the "randomize" button to cr

Набор номера на Вашем смартфоне по команде из 1СЕсли Вы не понимаете что это, для чего и не можете п

Use water physics, rotate your device to change gravity, tap to jump or dive!

When you plug-in your headset,the app will automatically flip screen 180 degrees