A Brief Overview
What is it?
Presbyopia of the Eye
Normal Vision VS. Presbyopia
Vision with Presbyopia
How Vision is Processed
How the Eye Sees
How vision is processed is quite different than how we perceive images. The perceptual system does not determine an object’s image on the retina but rather to determine the object that created the image.
1. Good continuation: points seem to belong together and are seen as a smooth line or curve.
2. Good simplicity: a stimulus pattern is seen in a way that the resulting image is as simple as possible.
3. Simplicity: similar things are grouped together.
4. Proximity: things that are close to each other appear to be grouped together.
5. Common region: things that are within the same region of space appear to be grouped together.
6. Uniform connectedness: a connected region of the same visual
properties, such as lightness, color, texture, or motion, is perceived as a
Presbyopia distorts our perception of objects as it causes closer objects to become blurry while objects further away are clearer.
(Goldstein, 2014, pp. 102-104).
Treatment for Presbyopia
Breedlove, S.M., & Watson, N.V. (2013). Biological psychology: An introduction to behavioral, cognitive, and clinical neuroscience (7th ed.). Sunderland, MA: Sinauer Associates, Inc.
Goldstein, E. B. (2014). Sensation and Perception (9th ed.). Belmont, CA: Wadsworth.
Facts Bout Presbyopia. (2010). Retrieved April 6, 2016 from: https://nei.nih.gov/health/errors/presbyopia