It is used to present the main points or topics of a given subject, often used as a rough draft or summary of the content of a document. Preparation of an outline is an intermediate step in the process of writing a scholarly research paper, literature review, thesis or dissertation.
The center of the computer monitor should normally be located 15 to 20 degrees below horizontal eye level (Figure 6). The entire visual area of the display screen should be located so the downward viewing angle is never greater than 60 degrees when you are in any of the four reference postures.
And f is the focal distance in meters. So if you want your computer screen 80 cm from your face that is 0.8 m. 1/D = 0.8. 1/0.8 = D. D = 1.25 = +1.25. Now just add this +1.25 to the spherical portion of your prescription (for both eyes) and voilÃ  you have computer glasses.