MF CL

Question 1

What are the different options for presbyopic CL wearers?

Answer 1

DV lenses with reading spex
monovision/enhanced monovision
multifocal cl

Question 2

what is monovision CL ?
what are the advantages and disadvantages

Answer 2

• 1 eye corrected for D + 1 eye corrected for near
• not recommend as full time correction, good option for people with high astigmatism

simple to fit
inexepensive

-ve reduced stereopsis +CS
more care when driving while adapting
not possible to fit monocular px or amblyopia bc need both eyes for movisionk
int vision not corrected–> early presbyopia can do int due to accomodation

if add becomes too high would not be uncomfortable

Question 3

what is enhanced monvison

Answer 3

fit dominant eye with svd lens
fit non dom eye with MF lens - contributes to DV too

to enhance DV - SVD to dom eye + MF non dom( centre near_
to enhance NV - SVN to non dom +mf to dom eye (centre distance)

Question 4

advantages and disadvantages of MF CL

Answer 4

+ve
good quality of vision
suitable with for px with BV problems- amp, decamp phobia, strong dominance
even possible for monocular px
good stereo/cs/binoc ba

-ve
£££
less stable vision
difficult to fit
requires more chair time
adaption required- risk of intolerance
come in limited range

Question 5

what are the types of design for presbyopic CL?