Unit 2

Question 1

Factors to determine patient suitability

Answer 1

-Expectations
-Hobbies
-Work environment
-Medical and ocular history
-Wearing history

Question 2

Things to find out when learning about patient expectations

Answer 2

-motivations
-wear time
-replacement Frequency
-Expected visual outcome
-Costs

Question 3

Relevant medical history for contact lens use

Answer 3

-Allergies
-Pregnancy or menopause
-Thyroid disfunction
-Auto immune diseases
-Skin condition
-Diabetes
-Medications

Question 4

Advntages of contact lenses

Answer 4

-No frame
-no fog or glare
-better for anisometropia
-normal retinal image size
-no prism
-Les convergence for hyperopes at near
-irregular corneas

Question 5

Disadvantages of contact lenses

Answer 5

-Reduces oxygen to cornea
-Infection possibility
-Time management
-Overall difficulty
-Expensive
-Not good for dry environments
-Have to re-order lenses

Question 6

Hyperopic glasses do this to convergence at near

Answer 6

Increase convergence demand
(Base out prism)

Question 7

Myopic lenses do this to convergence at near

Answer 7

Decrease convergence demand
(Base in prism)

Question 8

Equation for converting radius of curvature to diopters of power

Answer 8

(Curvature in D)=((index)-1)/(radius in m)

P=(n-1)/r