UNITED KINGDOM
from a worldwide leader in silicone hydrogel technology.
AIR OPTIX Individual™ is fitted according to the same fitting principles common to other soft contact lenses. However, the wide availability of powers, diameters and base curves of AIR OPTIX Individual™ provides more flexibility than other silicone hydrogel contact lenses. Following the key steps below will maximise your fitting success.
AIR OPTIX Individual™ is a 3 monthly replacement lens. It is available in single lens packs with an exchange warranty and 2-packs without the exchange warranty1. For a new patient to AIR OPTIX Individual™ it is advisable to start with a single pack for each eye then order 2-packs once the correct fit and power have been established.
ORDERING THE FIRST PAIR
1. Select Diameter and Base Curve
For a typical patient the 8.4 /14.00 design is a good starting point. The diameter and base curve are determined by using the HVID and flattest K reading as shown in the table below.
2. Determine Power
The vertex distance correction chart at the bottom of the page may be used for powers over +/-4.00D. AIR OPTIX Individual™ is available in sphere powers from +20.00D to -20.00D in 0.25D steps.
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| Measured HVID (Horizontally Visible Iris Diameter) |
Recommended Diameter |
Flattest K |
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| less than 7.5mm (>45.00D) |
7.50-8.00mm | greater than 8mm (< 42.00D) |
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| <11.00mm | 13.2mm | 7.7mm | 8.0mm | 8.3mm |
| 11.0-12.0mm | 14.0mm | 8.1mm | 8.4mm | 8.7mm |
| >12.0mm | 14.8mm | 8.3mm | 8.6mm | 8.9mm |
DISPENSING LENSES
Once the first lenses have been ordered and received, dispense these lenses and follow the steps below to maximise your fitting success.
1. Evaluate Fit
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Fit Analysis |
Observations |
Possible Solutions |
| Optimal | - Smooth movement of 0.1 mm to 0.5 mm - Mild or no lens awareness - Good centration - Full corneal coverage - Stable vision |
If vision is good, dispense lens and schedule follow-up visit in 10-14 days. Once confident fit and power are correct 2-packs (6 month supply) may be ordered for each eye. |
| Too Tight | - Insufficient or no lens movement - Lens resists movement on push-up test - Slow return to centred position - Fluctuating vision between blinks |
Order new lens with either flatter base curve or smaller diameter. May need to verify power as well. |
| Too Loose | - Lens edge standoff or “fluting” exists - Patient reports significant discomfort (check inversion) - Excessive movement during blinks - Poor centration - Blurred vision after blink |
Order new lens with either steeper base curve or larger diameter. May need to verify power as well. |
2. Over-refraction
Conduct a spherical over-refraction to verify the appropriate lens power. Because of AIR OPTIX Individual’s aspheric design, the final power may differ slightly from the patient’s habitual lens prescription.
VERTEX CONVERSION TABLE
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Spec- tacle Lens Power |
Vertex Distance/mm |
Spec- tacle Lens Power |
Vertex Distance/mm |
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Plus Lenses |
Minus Lenses |
Plus Lenses |
Minus Lenses |
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11 |
12 |
13 |
11 |
12 |
13 |
11 |
12 |
13 |
11 |
12 |
13 |
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4.00 |
4.25 |
4.25 |
4.25 |
3.75 |
3.75 |
3.75 |
12.50 |
14.50 |
14.75 |
15.00 |
11.00 |
10.75 |
10.75 |
4.50 |
4.75 |
4.75 |
4.75 |
4.25 |
4.25 |
4.25 |
13.00 |
15.25 |
15.50 |
15.75 |
11.25 |
11.25 |
11.00 |
5.00 |
5.25 |
5.25 |
5.50 |
4.75 |
4.75 |
4.75 |
13.50 |
16.00 |
16.25 |
16.50 |
11.75 |
11.50 |
11.50 |
5.50 |
6.00 |
6.00 |
6.00 |
5.00 |
5.00 |
5.00 |
14.00 |
16.50 |
16.75 |
17.25 |
12.00 |
12.00 |
11.75 |
6.00 |
6.50 |
6.50 |
6.50 |
5.50 |
5.50 |
5.50 |
14.50 |
17.25 |
17.50 |
18.00 |
12.50 |
12.25 |
12.25 |
6.50 |
7.00 |
7.00 |
7.25 |
6.00 |
6.00 |
6.00 |
15.00 |
18.00 |
18.25 |
18.75 |
12.75 |
12.75 |
12.50 |
7.00 |
7.75 |
7.75 |
7.75 |
6.50 |
6.50 |
6.25 |
15.50 |
18.75 |
19.00 |
19.50 |
13.25 |
13.00 |
12.75 |
7.50 |
8.25 |
8.25 |
8.25 |
6.75 |
6.75 |
6.75 |
16.00 |
19.50 |
19.75 |
20.00 |
13.50 |
13.50 |
13.25 |
8.00 |
8.75 |
9.00 |
9.00 |
7.25 |
7.25 |
7.25 |
16.50 |
20.00 |
14.00 |
13.75 |
13.50 |
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8.50 |
9.50 |
9.50 |
9.50 |
7.75 |
7.75 |
7.50 |
17.00 |
14.25 |
14.00 |
14.00 |
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9.00 |
10.00 |
10.25 |
10.25 |
8.25 |
8.00 |
8.00 |
17.50 |
14.75 |
14.50 |
14.25 |
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9.50 |
10.75 |
10.75 |
11.00 |
8.50 |
8.50 |
8.50 |
18.00 |
15.00 |
14.75 |
14.50 |
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10.00 |
11.25 |
11.50 |
11.50 |
9.00 |
8.75 |
8.75 |
18.50 |
15.25 |
15.00 |
14.75 |
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10.50 |
12.00 |
12.00 |
12.25 |
9.25 |
9.25 |
9.25 |
19.00 |
15.75 |
15.50 |
15.25 |
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11.00 |
12.50 |
12.75 |
13.00 |
9.75 |
9.75 |
9.50 |
19.50 |
16.00 |
15.75 |
15.50 |
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11.50 |
13.25 |
13.50 |
13.50 |
10.25 |
10.00 |
10.00 |
20.00 |
16.50 |
16.25 |
15.75 |
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12.00 |
14.00 |
14.00 |
14.25 |
10.50 |
10.50 |
10.25 |
20.50 |
17.00 |
16.75 |
16.25 |
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1 Lenses ordered in a single pack may be returned for an exchange or for credit for up to 90 days from the date of CIBA VISION’s receipt of the initial lens order for the patient in question, for the purpose of providing a satisfactory fit, vision improvement or in the event of an unsuccessful patient fit. Lenses purchased in 2 packs may only be returned if the product is defective, in accordance with CIBA VISION’s Standard Terms and Conditions of sale .
