16 Questions
Which of the following refractive errors is characterized by light converging to a focus in front of the retina?
Hyperopia
What is the refractive power of the reduced schematic eye described in the text?
60.0D
Which lens type diverges light and stimulates the accommodative system?
Concave lens
What is the simplified refractive index for the eye (n') mentioned in the text?
1.333
In which type of vision does parallel light rays converge to a sharp focus on the retina?
Emmetropia
What is the distance from the anterior corneal surface to the nodal point of the eye?
5.6mm
Which type of lens converges light and relaxes the accommodative system?
Convex lens
What is the function of prisms in relation to accommodation?
Diverge light
What causes myopia?
Steep cornea
How is hyperopia corrected?
Convex lenses
What is the most common eye disorder?
Astigmatism
What causes presbyopia?
Loss of strength of the ciliary muscle
What does hyperopia lack?
Power
What is the cause of compound myopic astigmatism?
Steep cornea
How does the eye compensate for hyperopia?
Accommodation
What is the cause of simple hyperopic astigmatism?
Flat cornea
Test your knowledge of general eye anatomy and ametropias (refractive errors) with this quiz by Dr. Ariette Acevedo Rodríguez, O.D. PPO. Learn about myopia, hyperopia, astigmatism, and presbyopia, and identify key points on a simplified schematic eye.
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