Presbyopia: multifocals measured, not guessed
Instead of trying lens after lens, we measure how your eye focuses light, design a lens for your eye, then check the result objectively.
- 01Keratoconus: five custom lens options
- 02High myopia: large-diameter lenticular RGP
- 03High astigmatism: rigid lenses only
- 04High hyperopia: why custom soft comes first
- 05Presbyopia: multifocals measured, not guessed
- 06Prosthetic lenses: appearance, comfort and vision
- 07Severe dry eye: scleral lenses for surface repair
Measured, not trial and error
Part 05 · 01For patientsAs we age, the eye loses its ability to focus up close. Multifocal contact lenses let you see near and far without reading glasses. Instead of trying lens after lens, we measure how your eye focuses light, design a lens for your eye, then check the result objectively.
Measure
The aberrometer maps how the eye focuses light.
Design
Spherical aberration (Z4) is customised to give depth of focus.
Stabilise
A custom diameter keeps the optics centred on the pupil.
Verify
We re-measure on the eye to confirm the optics objectively.
Vision quality comes from stability
Part 05 · 02A multifocal only works if its optics stay centred on the pupil. We treat lens choice as a route to stability, not as separate products.
Large-diameter RGP
About 10.8–11.4 mm, with a concentric multifocal design.
Custom soft
A concentric design on a custom soft platform.
Scleral
A concentric multifocal zone on a scleral lens.
Success is measured objectively on the eye, rather than judged by trial and error alone.
Key takeaways
Part 05- 01Multifocals designed from aberrometry, not trial and error
- 02Customised spherical aberration gives depth of focus
- 03A custom diameter keeps the optics centred, which is where vision quality comes from
Book a contact lens assessment.
Optometrists and ophthalmologists can refer through our referral form.
General health information only, not personal advice. Everyone’s eyes are different. An optometrist or doctor should examine you before any treatment is decided.