Fluorescein Pattern
Identification Guide
2D flatter than "K"
Excessive apical bearing, excessive inferior edge
standoff
2D steeper than "K"
Excessive peripheral sealoff
1D flatter than "K"
Excessive apical bearing, excessive inferior edge
standoff
1D steeper than "K"
Mild peripheral sealoff
Alignment pattern
Even pattern centrally with slightly greater clearance peripherally
Spherical BC on 3D WTR astigmatic cornea
Horizontal bearing and excessive vertical pooling is observed
Without yellow filter
Pattern observed without the use of yellow filter
over observation system
With yellow filter
Identical pattern with the addition of yellow filter; notice greater fluorescence
"On K" BC with a 9.5mm Dia; 8.4mm OZ
Observe apical clearance and insufficient peripheral clearance
"On K" BC with a 9.5mm Dia; 7.6mm OZ
A more alignment fitting relationship with greater peripheral clearance
Bicurve design with a 10.0mm PCR; .5mm wide
Acceptable edge clearance, though narrow in width
Bicurve design with a 10.0mm PCR; 1.0mm wide
An increase in edge clearance can be observed
Bicurve design with a 9.0mm PCR; .8mm wide
Insufficient edge clearance can be observed
Bicurve design with a 12.0mm PCR; .8mm wide
Observe greater clearance