Acriva Reviol BB MFM 611

* Light Filtration- Efficient Photoprotection
* Active Diffractive Optic
* 360° All Enhanced Square Edge
* Ultra Definition
* Premium Material
* Wide diopter range
* Superior Chromatic Aberration Control
* High MTF Values

Light Filtration – Efficient Photoprotection

Optimum Filtration Range – Balanced Photoprotection of UVA and Violet Spectrum

AcrivaUD BB provides excellent photoprotection from potential damage of the UVA and violet spectrum without blocking blue light. AcrivaUD BB ensures 95% blue light transmission at 480nm which is known as critical in controlling the circadian rhythm The choromophore used in AcrivaUD BB material is the same chromophore as in the human natural lens which gives similar transmission structure as a young human lens.

Importance of Blue Light

Blue light plays a crucial role in controlling the circadian rhythm and endogenous melatonin secretion. Disorganisation of the circadian rhythm is more common in older adults and people with insomnia, depression and dementia. Blue-blocking IOLs which contain synthetic dye filter up to 500 nm causes excessive filtering of blue light.

Ideal Concentration – Improved Contrast Sensitivity

AcrivaUD BB’s chromophore concentration is 0.02%. It has a clearer color in comparison to IOLs with higher concentrations of chromophores. Low concentration of AcrivaUD BB doesn’t influence color perception of the patient. Natural chromophore and its lower concentration provide a higher contrast sensitivity under low light condition.

Maximum Light Transmission – Better Visual Quality

Not all diffractive IOLs are the same. The unique design of Reviol’s Active Diffractive zones provides excellent light transmission at maximum range under any light condition.

Diffractive Zones of Reviol

The performance of multifocal IOLs is based on their establishment of diffractive zones. The different number, height, interval and width of the rings affect patient total visual outcomes under lower light conditions. Diffractive multifocal IOL engineering is based on balanced light energy between foci. Narrow rings increase the near addition. Conversely higher steps enable the transfer of more energy to near focus.

Pupil Independent Light Transmission – Increased Contrast Sensitivity

Reviol’s Active-Diffractive optic preserves a better balance of 60% far and 40% near focus at 6mm pupil aperture. Balanced light distribution under any light condition increases contrast sensitivity.
Decreased contrast sensitivity in mesopic light condition has been reported in pupil dependent multifocal IOLs . This phenomenon is explained by a light distribution change of 90% for far focus and 10% for near focus at 6mm pupil diameter. The lower energy transfer to near focus causes poor visual acuity in the patient.

3.75D Near Addition – Improved Intermediate Vision

3.75D near addition in Reviol’s Active-Diffractive Optic has the appropriate balance to provide better intermediate visual acuity. Near addition is crucial in energy distribution through near to distance focus. Insufficent near addition results in inadequate disparity between foci, which causes blurring vision at intermediate focus. Excessive near addition eliminates focus overlapping and provides sharp near and distance vision. On the other hand reduced visual performance may result, which causes difficulties in patient adaptation.