MF contact lenses

what are the types of mf lenses

1. concentric - alternating distance and near

2. CN aspheric - near centre distance outer

3. CD aspheric - distance centre near outer

4. translating - distance upper segment near lower segment

what are the light levels like for centre distance

• low illumination favours near

• high illumination favours distance

what are the light levels like for centre near

• low illumation favours distance

• high illumination favours near vision

what is conjunctivochalasis

loose conjunctiva between the globe and eyelid

what is the dominant eye corrected for

distance

what is the non dominant eye corrected for

near

what lenses are used in Monovision

one distance in dominant eye and one near in non dominant eye

which patients may benefit from monovision

With high astigmatism ◦ Seek perfect vision

which patients may struggle with multi focals

Monocular patients

◦ Strabismic

◦ Blind eye ◦

Poor binocularity

◦ Intermittent diplopia ◦

Amblyopic patients

◦ Poor BCVA in either eye ◦

Cataract

◦ Require excellent BCVA at all distances

◦ High astigmatism, especially oblique axes

◦ Perfectionist personalities, unwilling to #compromise ◦

High adds +3.00 and above ◦

Low myopes with low adds ◦

Emmetropic presbyopes