Two diameters run as separate designs, each on its own median base curve: the 13.6 pairs with a median 8.3 and the 14.2 with a median 8.6.

Sphere powers run -0.50 to -8.00 and +1.00 to +6.00, in 0.50 steps after +4.00, in both diameters.

Hioxifilcon D, a non-ionic copolymer of 2-hydroxyethyl methacrylate (HEMA) and glycerol methacrylate (GMA), cross-linked with ethylene glycol dimethacrylate (EGDMA).

Refractive index is 1.414 hydrated.

Blue visibility handling tint, phthalocyanato (2) - (copper).

Place a lens on each eye and allow a 15 minute period of adjustment and equilibration before judging the fit.

Prescribable for frequent or planned replacement wear with cleaning, disinfection and scheduled replacement, disinfected on a chemical system.

Supplied sterile in a sealed blister pack of buffered normal saline, labeled with base curve, power, diameter, manufacturing lot number and expiry date.

Manufactured and marketed by ACUCON of Sarasota, Florida, with a return of Extreme H2O upcoming; confirm supply with your distributor before prescribing.

One geometry only, a 14.2 diameter on a median 8.6 base curve.

Cylinder is supplied at two fixed powers, 0.65 D and 1.25 D, with sphere from -0.25 to -6.00 and +0.25 to +4.00.

Low Cylinder axes are limited to a fixed set of 15, 75, 90, 105, 165 and 180 degrees.

Orientation marks sit at 6 o'clock and 20 degrees off 6 o'clock on either side, for orienting the lens and reading rotation.

The Low Cylinder design carries 0.65 D of cylinder and covers cylindrical corrections from 0.5 up to 1.0 D.

Compensate rotation by Left Add, Right Subtract: rotation to the examiner's left is added to the refractive cylinder axis, rotation to the right is subtracted.

Hioxifilcon D, a non-ionic copolymer of 2-hydroxyethyl methacrylate (HEMA) and glycerol methacrylate (GMA), cross-linked with ethylene glycol dimethacrylate (EGDMA).

Blue visibility handling tint, phthalocyanato (2) - (copper).

Prescribable for frequent or planned replacement wear with cleaning, disinfection and scheduled replacement, disinfected on a chemical system.

Supplied sterile in a sealed blister pack of buffered normal saline, labeled with base curve, power, diameter, manufacturing lot number and expiry date.

Manufactured and marketed by ACUCON of Sarasota, Florida, with a return of Extreme H2O upcoming; confirm supply with your distributor before prescribing.

Two variants, Thin and Xtra, share a 14.2 mm diameter.

The Thin runs a median 8.6 mm only, while the Xtra adds a steep 8.3 mm that is available in minus powers only.

The Thin covers +6.00 to -6.00 by 0.25 diopters and -6.00 to -8.00 by 0.50; the Xtra extends to -10.00 by 0.50.

Good movement, centration and comfort are achieved for the majority of patients with the 8.6 mm base curve.

Hioxifilcon A, a non-ionic copolymer of 2-hydroxyethyl methacrylate (HEMA) and glycerol methacrylate (GMA), cross-linked with ethylene glycol dimethacrylate (EGDMA).

Refractive index is 1.515 dry and 1.404 hydrated.

Blue visibility handling tint, phthalocyanato (2) - (copper).

Prescribable for frequent or planned replacement wear with cleaning, disinfection and scheduled replacement, disinfected on a chemical system.

Supplied sterile in a sealed blister pack of buffered normal saline, labeled with base curve, power, diameter, manufacturing lot number and expiry date.

Manufactured and marketed by ACUCON of Sarasota, Florida, with a return of Extreme H2O upcoming; confirm supply with your distributor before prescribing.

Three diameters, each on its own median base curve: 13.6 mm with 8.2 mm, 14.2 mm with 8.5 mm, and 14.8 mm with 8.7 mm.

Each diameter covers +6.00 to -6.00 by 0.25 diopters and -6.00 to -10.00 by 0.50 diopters.

Place a lens on each eye and allow a 15 minute period of adjustment and equilibration before judging the fit.

Prescribed for daily disposable use, so no cleaning or disinfection is required and lenses are discarded upon removal.

Hioxifilcon A, a non-ionic copolymer of 2-hydroxyethyl methacrylate (HEMA) and glycerol methacrylate (GMA), cross-linked with ethylene glycol dimethacrylate (EGDMA).

Refractive index is 1.515 dry and 1.404 hydrated.

Blue visibility handling tint, phthalocyanato (2) - (copper).

Supplied sterile in a sealed blister pack of buffered normal saline, labeled with base curve, power, diameter, manufacturing lot number and expiry date.

Manufactured and marketed by ACUCON of Sarasota, Florida, with a return of Extreme H2O upcoming; confirm supply with your distributor before prescribing.

Base curves are labeled Flat, Med and Steep rather than by radius, with equivalents of 8.7, 8.4 and 8.1.

All three base curves run a single 14.0 diameter.

The Flat is minus only, -0.25 to -6.00 by 0.25 diopters, while Med and Steep run +6.00 to -6.00 by 0.25 and -6.50 to -10.00 by 0.50.

Good movement, centration and comfort are achieved for the majority of patients with the 8.4 mm base curve, the Med equivalent.

Hioxifilcon D, a non-ionic copolymer of 2-hydroxyethyl methacrylate (HEMA) and glycerol methacrylate (GMA), cross-linked with ethylene glycol dimethacrylate (EGDMA).

Refractive index is 1.414 hydrated.

Blue visibility handling tint, phthalocyanato (2) - (copper).

Prescribable for frequent or planned replacement wear with cleaning, disinfection and scheduled replacement, disinfected on a chemical system.

Supplied sterile in a sealed blister pack of buffered normal saline, labeled with base curve, power, diameter, manufacturing lot number and expiry date.

Manufactured and marketed by ACUCON of Sarasota, Florida, with a return of Extreme H2O upcoming; confirm supply with your distributor before prescribing.

Two base curves on one lens design, a median 8.6 mm and a steep 8.3 mm.

A single 14.2 diameter across both base curves.

Powers run +6.00 to -6.00 by 0.25 diopters and -6.00 to -12.00 by 0.50 diopters.

Good movement, centration and comfort are achieved for the majority of patients with the 8.6 mm base curve.

Hioxifilcon A, a non-ionic copolymer of 2-hydroxyethyl methacrylate (HEMA) and glycerol methacrylate (GMA), cross-linked with ethylene glycol dimethacrylate (EGDMA).

Refractive index is 1.515 dry and 1.404 hydrated.

Blue visibility handling tint, phthalocyanato (2) - (copper).

Prescribable for frequent or planned replacement wear with cleaning, disinfection and scheduled replacement, disinfected on a chemical system.

Supplied sterile in a sealed blister pack of buffered normal saline, labeled with base curve, power, diameter, manufacturing lot number and expiry date.

Manufactured and marketed by ACUCON of Sarasota, Florida, with a return of Extreme H2O upcoming; confirm supply with your distributor before prescribing.

Seabreeze Blue, Emerald Green, Golden Amber and Horizon Grey. Sold within the Extreme H2O range and listed with the FDA by Acucon, but cleared by Polydev Ltd of Ireland (K161931), so its specifications do not appear in Extreme H2O documentation. Acucon states it is preparing to relaunch the Extreme H2O family, so new-stock availability may be intermittent during the transition; confirm supply with your distributor before prescribing.