The world's population is aging at an increasing rate. Even in the absence of neurodegenerative disorders, healthy aging affects perception and cognition. In the context of cognition, common factors are well established. Much less is known about common factors for vision. Here, we tested 92 healthy older and 104 healthy younger participants in 19…

The sighting dominance and acuity of second-, fourth-, and seventh-grade children, and of college students were measured. Results showed a right versus left sighting dominance occurring in a ratio of 2:1 at each age. Patterns of acuity dominance also remained constant across grades. (Author/JMB)