8 Astigmatism

Question 1

Describe astigmatism to a patient so they can understand

Answer 1

The cornea is the clear outer coating of your eye. With astigmatism, the cornea is uneven, which changes how light enters the eye and may make things look funny. D’s may look like B’s like a funhouse mirror. But glasses will fix that problem in no time

Question 2

Aoa definition of astigmatism

Answer 2

Common vision condition that causes blur. Occurs when cornea is irregularly shaped (or curvature of lens inside eye). Prevents light from focusing properly on retina.

Question 3

What are the four methods for correcting astigmatism?

Answer 3

Glasses (spherocylindrical lenses)

Contact lenses (toric)

Squinting (narrows aperture, Lids can push on cornea)

Refractive surgery

Question 4

For a spherocylindrical lens, the axis cannot exceed _____ or be less than ____.

Angles ____ from patient’s left to right

Answer 4

180; zero

Increase