Three types of stereoscopic pictures are most common on the Internet: stereopairs, anaglyphs and stereograms. Special glasses are required to view anaglyphs, but training is not required. Stereopairs and stereograms are viewed after training without additional devices.
Necessary
Red-blue stereo glasses
Instructions
Step 1
There are two types of stereo pairs. Some of them are considered by the method of crossing the optical axes of the eyes, others by the method of looking into the distance. On the site where such images are located, it is indicated in which of these ways they should be viewed. Sometimes each of the pictures is laid out in duplicate, since different viewers are accustomed to different ways of viewing stereopairs.
Step 2
If the stereo image is designed for viewing by crossing the optical axes of the eyes, you will have to train as follows. Place your finger between your eyes and the monitor. Focus on your finger. The halves of the picture seem to merge with each other and you will see a stereo image. After some practice, you don't have to put your finger between your eyes and the monitor.
Step 3
Stereo pairs, designed for viewing by the method of looking into the distance, differ from those discussed above in that it is necessary to focus your gaze on an object located behind the monitor. It is a little more difficult to train to view such images.
Step 4
Considering stereo pairs, designed for the method of crossing the optical axes of the eyes, is useful for those who have farsightedness, and harmful for those who suffer from myopia. With regard to stereo pictures, designed for viewing by the method of looking into the distance, the situation is exactly the opposite.
Step 5
Anaglyphs are viewed without any training, wearing glasses, in which the left glass is red and the right glass is blue. If the perspective turns out to be distorted, then the image is not composed according to the standard, and the glasses should be turned over. Also some glasses have green glass instead of blue.
Step 6
Stereograms are viewed in the same way as stereopairs designed for viewing distance gaze methods. Their peculiarity lies in the fact that until the correct position of the eyes for viewing has not been developed by training, it is impossible to see what exactly is shown in the picture. Examining stereograms is considered a good gymnastics for the eyes with myopia.
