full transcript

From the Ted Talk by Dan Reinstein: How does laser eye surgery work?

Unscramble the Blue Letters


galsses and contact lenses bend light to compensate for these rvacretfie errors. But, as Barraquer’s procedure shows, we can also alter the shape of the cerona itself; moving the focal point backwards, forwards, or pulling a divided image together. And thankfully, modern eye sgurneos can sculpt the cornea with far less invasive tools.

In corrective laser eye surgery, surgeons rely on exmicer lasers. These tools are accurate enough to etch words into a human hair. To safely accomplish these ultra-fine incisions, they use a technique caleld photoablation. This allows the lsear to essentially evaporate origanc tssiue without overheating surrounding eye tissue.

Open Cloze


_______ and contact lenses bend light to compensate for these __________ errors. But, as Barraquer’s procedure shows, we can also alter the shape of the ______ itself; moving the focal point backwards, forwards, or pulling a divided image together. And thankfully, modern eye ________ can sculpt the cornea with far less invasive tools.

In corrective laser eye surgery, surgeons rely on _______ lasers. These tools are accurate enough to etch words into a human hair. To safely accomplish these ultra-fine incisions, they use a technique ______ photoablation. This allows the _____ to essentially evaporate _______ ______ without overheating surrounding eye tissue.

Solution


  1. called
  2. laser
  3. refractive
  4. surgeons
  5. glasses
  6. excimer
  7. tissue
  8. organic
  9. cornea

Original Text


Glasses and contact lenses bend light to compensate for these refractive errors. But, as Barraquer’s procedure shows, we can also alter the shape of the cornea itself; moving the focal point backwards, forwards, or pulling a divided image together. And thankfully, modern eye surgeons can sculpt the cornea with far less invasive tools.

In corrective laser eye surgery, surgeons rely on excimer lasers. These tools are accurate enough to etch words into a human hair. To safely accomplish these ultra-fine incisions, they use a technique called photoablation. This allows the laser to essentially evaporate organic tissue without overheating surrounding eye tissue.

Frequently Occurring Word Combinations


ngrams of length 2

collocation frequency
refractive errors 3
technique called 3
blurry vision 2
focus light 2
contact lenses 2
laser eye 2


Important Words


  1. accomplish
  2. accurate
  3. alter
  4. bend
  5. called
  6. compensate
  7. contact
  8. cornea
  9. corrective
  10. divided
  11. errors
  12. essentially
  13. etch
  14. evaporate
  15. excimer
  16. eye
  17. focal
  18. forwards
  19. glasses
  20. hair
  21. human
  22. image
  23. incisions
  24. invasive
  25. laser
  26. lasers
  27. lenses
  28. light
  29. modern
  30. moving
  31. organic
  32. overheating
  33. photoablation
  34. point
  35. procedure
  36. pulling
  37. refractive
  38. rely
  39. safely
  40. sculpt
  41. shape
  42. shows
  43. surgeons
  44. surgery
  45. surrounding
  46. technique
  47. thankfully
  48. tissue
  49. tools
  50. words