eye (technology)

Question 1

pros and cons of contact lenses

Answer 1

pros:
- sport
- can be adjusted, adapted through life

cons:
- do not correct problem, requires ongoing use
- difficult insertion + removal
- risk of infection if not sanitised

Question 2

pros and cons of laser surgery

Answer 2

seeks to reshape the cornea to change its refractive index to restore perfect accomodation (LASIK)

pros:
- provides a cure

cons:
- expensive
- surgery is dangerous and risky
- cannot be done until 20 years old

Question 3

pros and cons of glasses/spectacles

Answer 3

pros:
- easy to put on/off
- tailored to specific people/needs
- can be adjusted throughout life

cons:
- does not correct the problem
- requires ongoing use
- inconvenient, and can break

Question 4

pros and cons of cataract surgery

Answer 4

pros:
- painless
- improves vision
- patients regain normal life - independence, higher quality of life

cons:
- high costs
- risk of surgery + infection
- artificial lens not as effective as natural lens, glasses required for close reading