30 Questions
What is the approximate prevalence of myopia between the ages of 20 to 40 years?
30%
What is the reason for the slight decrease in myopia prevalence after 40 years of age?
Tendency of some low myopes to 'loose' the myopia
What is the percentage of myopia prevalence beyond 75 years of age according to Hirsch's study?
15.3%
What is the age range where myopia in children increases drastically?
From 1st grade to 8th grade
What is the typical age range where myopia worsens?
Until the age of 21
What is the predicted level of myopia by 2050?
Predicted levels of myopia
What is the characteristic of myopia progression in adult years?
Slow progression or stabilization
What is the main factor responsible for young myopia progression?
Steepening of the anterior surface of the cornea
What happens to highly myopic children during teenage years?
They tend to progress at a much higher rate
What is the nature of myopia etiology?
Multifactorial or polygenic
What happens to small or moderate myopes during presbyopic years?
They observe a decrease in myopia
What is the risk of developing amblyopia in an asymmetrical myopia case?
The eye with higher myopia may develop amblyopia
What did Donders propose as the cause of myopia in 1864?
Prolonged tension on the eyes during close work and elongation of the axes
What is the role of the macula in maintaining emmetropia?
It supplies information about the degree of stretch necessary to maintain emmetropia
What happens to the flow of aqueous humor when accommodating an object at 20cm?
It is blocked due to the sphincter muscle pulling forward on the anterior vitreous
What is the result of inadequate tonus of the ciliary-choroid envelope?
Myopia
What is the effect of high body temperature on the sclera?
It causes the sclera to stretch
What is the function of the Edinger-Westphal nucleus (EWN) in maintaining emmetropia?
It determines the degree of stretch necessary to maintain emmetropia
What is a common issue faced by uncorrected hyperopic children?
Difficulty in performing visual perception skill tests
Why are traditional school and pediatrician's screenings often ineffective in detecting hyperopia?
They are directed towards myopes
What is the purpose of introducing a trial lens of +1.00D during a vision screening?
To detect possible hyperopes
According to the InfantSEE program, what is recommended for children before preschool?
A comprehensive eye examination
What is the risk if hyperopia of +3.50 or more is not corrected?
Development of strabismus or amblyopia
What is the main concern for eyecare professionals when it comes to prescribing corrections for hyperopia?
When to prescribe glasses
What is a risk factor for myopia?
Female gender
What is a characteristic of pathologic myopic eyes?
Optic nerve crescents
What is a type of anomalous myopia?
Pilots myopia
What is a complication of high myopia?
All of the above
What is the term for hyperopia that can be compensated with accommodation?
Facultative hyperopia
In which age range is hyperopia prevalence around 6%?
From age 6 to 15
Quiz about the prevalence of myopia in adults, including the peak age range and changes in later life. Learn about the factors contributing to myopia in adults.
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