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For reading in the dark, as in dimly lit rooms or at night, an alternate source of illuminating the words on the page will be required. In addition to protecting the screen of the reader, a case may be bought that includes a lighting source. Tucked away in a corner or side of the book, it can be pulled out when needed. Reading in dimly lit situations will no longer be an issue.
Alternate choices for making the Kindle easy to read in darkness are most likely available. Bookstores, online shopping sites and magazines may hold these choices ready for purchase. Trying them out may be the only and best way to check them out. Some may be better than others.
Airplane overhead beams may not be sufficient for comfortable viewing of eReaders. Having a comfortable light source of its own would make the reader more convenient. It could likely save one's eyesight as well. Disturbing the folks seated nearby would not be an issue either.
Sometimes after a day of mentally or physically strenuous activity, a nice hot bath could soothe the pain away. Dimming the lights and playing soft music would help in that endeavor. Reading also is soothing, but in that dim light, something else is needed. To supply the needed illumination, pulling out the eReader with its accompanying glow will work well.
Storms and other disasters can often put out the lights. When one finds themselves in this situation, it is not always necessary to try and read by candlelight. If the reader chosen has its own glowing beam, that would be sufficient. Candles are great for seeing the way around the house, but for viewing words on a page, something brighter is desired for healthy eyesight.
Car travel at night makes anything other than conversation, radio, or CDs, impossible. Caring along an electronic book with its own light source will aid in this situation. Interior illumination will not be necessary. Safety is assured with no bright distractions to the driver. The Kindle light pulled up out of its case will save the night.