Hello! I have a theoretical & practical question. Theorecical: I noticed that when I turn on my smart phone camera application and look 'through it' on some distant object, holding smart phone 30 cm from my eyes, then my eyes are focused on 30 cm and not in distance. Is there a way (i.e. using a computer program) to make smart phone camera application be like a transparent glass, i.e. so there will be no difference looking to a distant object through glass or through smart phone via camera? And now the practical question: For people with myopia (especially children) reading books worsens the myopia. When reading, a person holds book about 25 cm from eyes and his/her lens muscles are tensed which raises pressure inside the eye and eventually (with myopia people only) cause the eye-ball to become longer and increases myopia. The solution for this problem would be to project an electronic book to a distant screen and read from this screen. But this is not so convenient, because in this case you cannot read where ever you want, you are bound to the room with the screen and the screen should be huge etc. Why instead not to use a computer program which displays on a normal iPad the content of the book, but causes the eye to focus in distance, similar to what the Google glasses do? I am wondering if there is such software and how it should work from geometrical optics point of view.