Will eye strain damage my eyes?
Using your eyes will not damage them; "eye strain" will not damage them. To relieve the strain, however, be sure you are blinking enough, look away from the material every 20 min or so for a couple minutes and, depending on your age, explore the option of reading glasses. The power of the reading glasses will depend on whether you are editing hardcopy documents on a desk or editing electronic documents on a computer scree. The computer screen is likely to be be a little farther away and would therefore require less power in reading glasses than for a desk.
