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Clinical Optometry II
Terms in this set (12)
What is the most likely cause of a patient that begins to have myopia at 40 years of age (late adult onset)?
Nuclear sclerotic cataracts (myopic shift)
When newborns have myopia, what is it most likely caused by?
What is one of the greatest determinants of likelihood of refractive error a patient might have?
What is the percentage, and the prescription that is most common seen in 20 and 40 year old myopic patients?
30% , -0.50D or more
What are the classifications of Hyperopia based in degree of diopters?
Low: <+3.00 D
What allows Hyperopes to compensate for their lack of convergent power?
Accommodation (altering the power of the crystalline lens)
What are all the factors that can cause Myopia?
7. Socioeconomic status
8. Systemic conditions/Ocular disease
What is the cause when a patient reports that they see blurry at "All" distances?
How would you know if a patient has astigmatism from their complaints, what do they complain about?
1. They see Blur at all distances
2. Can't see fine print
3. Troubles reading/computer
5. Eye strain (asthenopia)
6. Smeared/stretched images
7. Pseudodiplopia (not true diplopia)
If a patient has Astigmatism, what sign can indicate a possible Pathology?
When the principal meridians are separated by an angle other than 90 (irregular astigmatism)9
What is the vast majority cause of Astigmatism?
the Cornea's anterior surface
What function is the cornea responsible for?
2/3 of all focusing power of the eye
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