Astigmatism

Vision and Perception

What is Astimatism?

Astigmatism is when there is an irregular curve of the lens or cornea (Astigmatism, 2015). This causes someone to have blurry or distorted vision because the curve changes how light passes to the retina (Astigmatism, 2016). Astigmatism is often associated with nearsightedness and farsightedness and is a common vision condition (Astigmatism, 2015).

Gestalt Approach

When it comes to how we perceive things there are different ideas out there however, the Gestalt Approach covers how we perceive things and why. According to the Gestalt Approach we perceive objects by grouping them together (Goldstein, 2014). The Gestalt Approach also believes that perception depends on organizing principles which helps with determining how objects and scenes become grouped together (Goldstein, 2014). These principles are good continuation, pragnanz similarity, proximity, common fate, common region, uniform connectedness (Goldstein, 2014).

Treatment for Astigmatism

When it comes to treatment of astigmatism the main goal is to fix they way the light passes to the retina (Astigmatism, Mayo Clinic, 2016). Treatment includes eyeglasses, contact lenses, LASIK surgery, photorefractive keratectomy, and LASEK surgery (Astigmatism, Mayo Clinic, 2016). LASIK is when surgeons make a circular hinged cut into the cornea with a laser or a keratome (Astigmatism, Mayo Clinic, 2016). PRK is when a surgeon removes the outer protective layer of the cornea and then use a laser to fix the curvature (AStigmatism, Mayo Clinic, 2016). LASEK involves a thinner layer of the cornea being pulled back which makes put the eye at a lower chance of damage (Astigmatism, Mayo Clinic, 2016).

References

Astigmatism. (2015). Retrieved April 06, 2016, from http://www.aoa.org/patients-and-public/eye-and-vision-problems/glossary-of-eye-and-vision-conditions/astigmatism?sso=y

Astigmatism. (2016). Retrieved April 06, 2016, from http://www.healthline.com/health/astigmatism#Overview1

Astigmatism. (2016). Retrieved April 06, 2016, from http://www.mayoclinic.org/diseases-conditions/astigmatism/basics/treatment/con-20022003

Goldstein, E. B. (2014). Sensation and Perception (9th ed.). Belmont, CA: Wadsworth