Eye Fatigue

Eye fatigue can be a major problem for microscope operators, especially if they have poor vision resulting from near or far sightedness, or astigmatism. If you are a beginning microscopist, you may tend to tense up when viewing. You think you have to set your eyes for near vision because, after all, you want to view something small. This is not the correct attitude in microscopy and may cause you strain in the long run. There is an easy remedy: First, look into the distance with your eyes relaxed and then into the eyepieces without changing the setting of your eyes. Only then should you set the interpupillary distance of the eyepieces via the folding bridge until you see only one circle instead of two. Remember to consciously use both your eyes for viewing.