High Powers, 9.0 BC and Plus Powers: Which Contact Lenses Exist?

Standard power ranges do not cover every prescription. High minus, plus power and a 9.0 BC are less common parameters, but OpticOn offers several relevant options.

High-minus contact lenses

ZEISS Contact Day 30 Compatic

A soft spherical monthly lens covering −0.50 to −20.00 D, with 8.6 mm BC, 14.2 mm DIA, six lenses per box and a UV filter.

Biofinity XR

CooperVision’s extended range for high minus and plus powers, retaining Biofinity’s silicone-hydrogel material and Aquaform® Technology.

Both reach −20.00 D, but they are not automatically interchangeable. Material, design, BC, DIA and exact available powers differ.

What does 9.0 BC mean?

BC is the base curve in millimetres. A 9.0 BC alone does not make a lens better or looser; overall design and fit also matter.

A 9.0 BC option is available in ACUVUE OASYS 1-Day and 1-DAY ACUVUE MOIST. Both are daily lenses, but their materials and technologies differ.

Plus-power lenses

Plus powers are produced in selected Biofinity/Biofinity XR, Air Optix and ACUVUE ranges. Maximum positive power varies by model, and unusual parameters may require a special order.

Before ordering

• SPH/Power for each eye;
• BC and DIA;
• CYL and AXIS for toric lenses;
• the exact model and box quantity;
• stock, lead time and special-order status.

Frequently asked questions

Does the same BC make two lenses equivalent?

No. Material, diameter, thickness and design also matter.

Can I order high powers directly from an eyeglass prescription?

At high powers, eyeglass and contact-lens prescriptions may differ. Verify the complete contact-lens parameters.

Conclusion

An unusual prescription does not mean there are no options. Explore the OpticOn contact-lens collection.

Why precision matters at high powers

At stronger powers, small differences in prescription or lens position can be more noticeable. The distance between eyeglass lenses and the eyes also affects effective power, so a high eyeglass prescription is not always transferred unchanged to contacts.

Comparing ZEISS and Biofinity XR

Start with the required SPH, then compare BC, DIA, material, schedule and fit. ZEISS Contact Day 30 Compatic covers minus powers to −20.00 D, while the Biofinity XR family includes high minus and plus options. The correct choice depends on the complete prescription.

Ordering plus powers

Availability in a product range does not mean every plus power is always in stock. Confirm the exact power, box quantity and estimated lead time. Different powers between the eyes normally require separate boxes.

9.0 BC and other parameters

When 9.0 BC is required, also check DIA and the full model name. ACUVUE OASYS 1-Day is silicone hydrogel with HydraLuxe® Technology; 1-DAY ACUVUE MOIST is hydrogel with LACREON® Technology.

Planning a special order

If your parameter is uncommon, plan the next box before the current supply ends. A photo of the previous box can help verify the exact model and values and reduce ordering mistakes.