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Cataract: Quiz

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Question 1: What does the following picture show?

  Human eye cross-sectional view, showing position of human lens. Courtesy NIH National Eye Institute
  Cataract surgery, using a temporal approach phacoemulsification probe (in right hand) and "chopper" (in left hand) being done under operating microscope at a Navy medical center
  Human eye cross-sectional view, showing position of human lens. Courtesy NIH National Eye Institute
  Human eye cross-sectional view, showing position of human lens. Courtesy NIH National Eye Institute

Question 2: What does the following picture show?

  Human eye cross-sectional view, showing position of human lens. Courtesy NIH National Eye Institute
  Human eye cross-sectional view, showing position of human lens. Courtesy NIH National Eye Institute
  Human eye cross-sectional view, showing position of human lens. Courtesy NIH National Eye Institute
  Bilateral cataracts in an infant due to Congenital rubella syndrome

Question 3: A cataract is a clouding that develops in the crystalline lens of the ________ or in its envelope, varying in degree from slight to complete opacity and obstructing the passage of light.
Sensory systemBrainEyeNervous system

Question 4: [27] In his Choice of Eye Diseases, written in circa ________, he wrote of his invention of the hypodermic needle and how he discovered the technique of cataract extraction while experimenting with it on a patient.
11th century100110001000–1009

Question 5: Cataracts typically progress slowly to cause vision loss and are potentially ________ if untreated.
Amaurosis fugaxBlindnessAmblyopiaMyopia

Question 6: [22] Early cataract surgery was developed by the Indian surgeon, ________ (6th century BCE).
Muhammad ibn Zakariya al-RaziSushruta SamhitaAbu al-Qasim al-ZahrawiAvicenna

Question 7: [8] Cataracts are also unusually common in persons exposed to infrared radiation, such as ________ who suffer from "exfoliation syndrome".
MosaicStained glassCeramic artGlassblowing

Question 8: What does the following picture show?

  Bilateral cataracts in an infant due to Congenital rubella syndrome
  Human eye cross-sectional view, showing position of human lens. Courtesy NIH National Eye Institute
  Human eye cross-sectional view, showing position of human lens. Courtesy NIH National Eye Institute
  Slit lamp photo of anterior capsular opacification visible a few months after implantation of Intraocular lens in eye, magnified view

Question 9: ________ factors are often a cause of congenital cataracts and positive family history may also play a role in predisposing someone to cataracts at an earlier age, a phenomenon of "anticipation" in pre-senile cataracts.
BiologyEvolutionGeneticsDNA

Question 10: What does the following picture show?

  Human eye cross-sectional view, showing position of human lens. Courtesy NIH National Eye Institute
  Slit lamp photo of anterior capsular opacification visible a few months after implantation of Intraocular lens in eye, magnified view
  Slit lamp photo of anterior capsular opacification visible a few months after implantation of Intraocular lens in eye, magnified view







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