Assessment of Visual Acuity and Vision Correction Techniques
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Questions and Answers

What is the abbreviation for the right eye in visual acuity assessment?

  • OS
  • OD (correct)
  • OU
  • LP
  • What term is used to describe the condition when the lens of the eye loses its ability to focus with aging?

  • Emmetropia
  • Astigmatism
  • Myopia
  • Presbyopia (correct)
  • Which condition occurs when the visual image is focused behind the retina?

  • Astigmatism
  • Presbyopia
  • Myopia
  • Hyperopia (correct)
  • What does legal blindness typically refer to in terms of visual acuity?

    <p>20/200</p> Signup and view all the answers

    In visual acuity assessment, what does OU stand for?

    <p>Both Eyes</p> Signup and view all the answers

    What is the term used to describe the condition where vision is perfect when parallel rays are focused exactly on the retina?

    <p>Emmetropia</p> Signup and view all the answers

    What is the common terminology used to describe inward crossed eyes?

    <p>Esotropia</p> Signup and view all the answers

    Which cranial nerve controls all extraocular movements except for lateral rectus and superior oblique muscles?

    <p>CN III</p> Signup and view all the answers

    During ophthalmoscopy, what should the examiner focus on when examining the retina?

    <p>Retinal arteries and veins</p> Signup and view all the answers

    What is the main purpose of using apertures in ophthalmoscopy?

    <p>To enhance red reflex</p> Signup and view all the answers

    Which of the following is the most common type of strabismus in children?

    <p>Esotropia</p> Signup and view all the answers

    What condition is characterized by vertical misalignment of the eyes?

    <p>Hypertropia</p> Signup and view all the answers

    What is the main reason why the eye is considered the most accessible organ for direct examination?

    <p>The interior of the eye is visible through the clear cornea.</p> Signup and view all the answers

    Why is the eye the only part of the body where blood vessels and central nervous system tissue can be viewed directly?

    <p>The eye's transparency allows for direct viewing.</p> Signup and view all the answers

    In assessing visual acuity, what does a measurement of 20/20 mean?

    <p>The patient can see at 20 ft what a normally sighted person can see at 20 ft.</p> Signup and view all the answers

    How is visual acuity typically recorded?

    <p>As a fraction representing patient's vision compared to normal vision.</p> Signup and view all the answers

    What does a visual acuity measurement of 20/200 indicate?

    <p>The patient is legally blind.</p> Signup and view all the answers

    In assessing visual acuity with a Rosenbaum chart, at what distance should it typically be read?

    <p>At 10-14 inches</p> Signup and view all the answers

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