Age-related macular degeneration (AMD or ARMD) is the most common cause of vision loss in those aged over 50. It causes a gradual loss of central (but not peripheral) vision. Central vision is needed for detailed work and for things like reading and driving. The disease does not lead to complete blindness.
Definition of Dissonance Dissonance is the use of impolite, harsh-sounding, and unusual words in poetry. In other words, it is a deliberate use of inharmonious words, phrases, or syllables intended to create harsh sounding effects.
1 The magnitude of the dissonance (or consonance) increases as the importance or value of the elements increases. 2  The total amount of dissonance that exists between two clusters of cognitive elements is a function of the weighted proportion of all linked relations between the two clusters that are dissonant.