Proper task light can reduce eye strain by making documents easier to read. Many people find it most comfortable when they can reduce the room lighting which makes the monitor easier to read. Then use task lighting to focus more light on paper documents. Study have shown that after 25 years of age we all need much more lighting on documents to read them without twisting turning or leaning forward.
Set your room light for a more comfortable viewing of your monitor. You may want to call up the different kind of document you use and test readability with different room lighting.
Place task lighting to illuminate paper documents.