Week 1.01 Advatages And Disagdvatages

Question 1

Optical advantages of contact lenses

Answer 1

• Field of view
• Normalisation of retinal image sizes
• Few abberations/ prismatic effects
• Lenses move with eyes
• Hyperopes converge less at near
• ## Certain lenses can slow the progression of myopia

Question 2

Cosmetic advantages of CLs

Answer 2

• No reflections
• Doesn’t magnify or minify eyes
• Doesn’t hide px eyes
• Can change eye colour

Question 3

Practical advantages for CLs

Answer 3

• Stability for sport
• Improved binocular vision for sport
• Fogging avoided
• Myopia control
• Therapeutic uses such as glaucoma

Question 4

Disadvantages of contact lenses

Answer 4

• learning to handle
• cleaning them/replacing them
  Hygiene
  Broken or lost lenses
  More check ups
  Cost - lenses, check ups, solutions, rx
  Myope converge more at near
  Dryness