They also show an infinite variety of color, including a white even whiter than that of the background. A period following a letter on the same horizontal level as the bottom of the letter may appear to change its position in a great variety of curious ways. Its distance from the letter may vary. It may even appear on the other side of the letter. It may also appear above or below the line.
Some persons see letters arranged in irregular order.
In the case of the word AND, for instance, the D may occupy the place of the N. or the first letter may change places with the last. All these things are mental illusions. The small letters, twenty feet distant, may appear to be a mile away. Patients troubled by illusions of distance sometimes ask if the position of the card has not been changed. When the eye has imperfect sight the mind not only distorts what the eye sees, but it imagines that it sees things that do not exist.