18 Questions
What is the abbreviation for the right eye in visual acuity assessment?
OD
What term is used to describe the condition when the lens of the eye loses its ability to focus with aging?
Presbyopia
Which condition occurs when the visual image is focused behind the retina?
Hyperopia
What does legal blindness typically refer to in terms of visual acuity?
20/200
In visual acuity assessment, what does OU stand for?
Both Eyes
What is the term used to describe the condition where vision is perfect when parallel rays are focused exactly on the retina?
Emmetropia
What is the common terminology used to describe inward crossed eyes?
Esotropia
Which cranial nerve controls all extraocular movements except for lateral rectus and superior oblique muscles?
CN III
During ophthalmoscopy, what should the examiner focus on when examining the retina?
Retinal arteries and veins
What is the main purpose of using apertures in ophthalmoscopy?
To enhance red reflex
Which of the following is the most common type of strabismus in children?
Esotropia
What condition is characterized by vertical misalignment of the eyes?
Hypertropia
What is the main reason why the eye is considered the most accessible organ for direct examination?
The interior of the eye is visible through the clear cornea.
Why is the eye the only part of the body where blood vessels and central nervous system tissue can be viewed directly?
The eye's transparency allows for direct viewing.
In assessing visual acuity, what does a measurement of 20/20 mean?
The patient can see at 20 ft what a normally sighted person can see at 20 ft.
How is visual acuity typically recorded?
As a fraction representing patient's vision compared to normal vision.
What does a visual acuity measurement of 20/200 indicate?
The patient is legally blind.
In assessing visual acuity with a Rosenbaum chart, at what distance should it typically be read?
At 10-14 inches
Learn about the assessment of visual acuity, including legal blindness criteria and visual acuity abbreviations. Explore vision correction techniques like the pinhole method and understand terms like emmetropia for normal vision.
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