1. There are no visual images in the dreams of those born without any ability to experience visual imagery in waking life.
2. Individuals who become blind before the age of five seldom experience visual imagery in their dreams, although Deutsch (1928) reports some visual imagery in six schoolchildren who lost their sight before age five.
3. Those who become sightless between the ages of five and seven may or may not retain some visual imagery.
4. Most people who lost their vision after age seven continue to experience at least some visual imagery, although its frequency and clarity often fade with time.
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