Fitting cl for presbyopia (RGP)

Question 1

hybrid contact lenses

Answer 1

a multifocal RPG can also be part of a hybrid lens
RBG in a middle with a solf skirt to help with comfort

Question 2

pesbyopia soft lens

Answer 2

What do you think is crucial when thinking about the fitting of a lens?
Lens movement
Lens centration
Lenses often sit slightly nasally which the manufacturer’s take into account therefore a lens decentered temporally will increase aberrations and reduce acuity

But never at the expense of ocular health

Question 3

Presbyopia rigid lens

Answer 3

What do you think is crucial when thinking about the fitting of a lens?
Lens movement
Lens centration
Can fit aspherics 0.5mm-0.8mm steeper than the cornea to reduce movement and ensure good centration and due to the aspheric nature the fit should still allow a normal tear exchange

But never at the expense of ocular health

Question 4

extended depth of focus

Answer 4

Range of near addition in 1 contact lens

Idea is to solve problems around decreased quality of vision, the effect of pupils, the effect of centration, decreased contrast sensitivity

More lenses will probably arrive on the market soon

Question 5

over refraction mono vision

Answer 5

done binocularly

check dist VA

Check Near VA

if adjusting maintain binocularity to makw sure you dont improve one too mucb at expense of the other

Question 6

Over refraction alternating design

Answer 6

Each eye should be corrected for distance and near so can over-refract monocularly
Important that patient is looking through the right part of the lens for distance and near
Good idea to check distance and near binocularly at the end

Question 7

over refraction simulataneous design

Answer 7

Binocular is best
If binocular is poor then check monocular
If one eye is particularly poor then can carry out a monocular refraction on that eye

Manufacturer’s will offer guidelines on how to then adjust.