Insertion Bubbles
Insertion bubbles are common. To avoid, completely fill the bowl of the lens with solution prior to applying.
Excessive Apical Pressure
If excessive central touch and bubbles for in the scleral area, the lens is not properly aligned with the sclera but instead is rocking on the cornea. The wearer may also complain of edge awareness in this situation. To correct, increase the sag depth value.
Sag Value Too High
If bubbles form in the central zone of the lens, this means the sag depth value is too high. To correct this, reduce the sag depth value.
Small Bubbles
Small bubbles that move around are acceptable as long as they don’t cross over the pupil and interfere with vision. However, bubbles that are fairly stationary are not acceptable and the fit should be modified to eliminate them.
Excessive Mid-peripheral Clearance
When the proper sag depth value has been determined but bubbles still persist in the mid-peripheral/limbal zone clearance, keep the sagittal depth value the same, but choose a decreased mid-peripheral/limbal zone clearance value.
Conjunctival Impingment
When conjunctival impingement occurs showing excessive blanching; order a lens with a flatter edge, either 1-Flat or 2-Flat. Depending on the lens diameter, increase the profile, increase the sag, or depending on the severity, consider all three options simultaneously.
Lenses
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Lenses
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Lens Care
How to apply your contact lens:
To balance the lens, create a cradle using the thumb, index finger and the middle finger...
Problem Solving
The following examples are issues that may arise during the process: Insertion Bubbles, Excessive Apical Pressure, Sag Value Too High, Small Bubbles, Excessive Mid-peripheral Clearance, Conjuctival Impingement...
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