PRESBYOND is a refinement of monovision using blended‑vision optics, and can be suitable for people who tolerate monovision‑style correction.
How it relates to monovision
It extends the concept rather than replacing it.
- Dominant eye is targeted more for distance, non‑dominant for near
- Aspheric profiles extend depth of focus in both eyes
- Provides smoother binocular vision than simple monovision in many patients
- Often mimics a successful monovision contact‑lens trial with additional range
- Still relies on brain adaptation to slightly different focus between eyes
Who it suits best
Tolerance to anisometropia is key.
- People who have tried and liked monovision contact lenses
- Good binocular vision and depth perception at baseline
- Realistic expectations about adaptation and potential night‑vision changes
- Those prioritising spectacle reduction over perfect symmetry
- Patients uncomfortable with monovision trials are usually less suited
