- when the corneal surface isn't adequately resurfaced with tears after the blink
- edge of GP lens holds lid away from corneal surface during blink
- incomplete blinking
- may see vascularized limbal keratitis
Adjusting the fit to minimize excessive edge lift and inferior position
Strive for superior lens position by:
- decreasing diameter
- reduce CT
- +/- lenticulars
- reduce edge clearance
- steepen PC radius
- narrow PC width
- reduce edge thickness
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