Bifocals

In fitting bifocal lenses, there is not an infinite number of fitting and problem-solving guidelines to follow; in fact, very few are necessary. The GPLI Advisory Committee, comprised of highly competent GP fitting practitioners, have indicated it only takes an average of 3 fits to feel comfortable with any given bifocal design. A helpful fitting aid is the "Bifocal Fitting & Troubleshooting Video" available from the CLMA (1-800-344-9060).

Fitting Pearls

• Provide all options, but emphasize bifocals:
• Distance GP lenses + reading glasses
• Monovision
• Bifocal GPs
   
• Assess motivation
• Advise patient of a possible slight compromise in vision vs. spectacles
• If extremely critical vision demand, may not be a good candidate
   
• Explain dynamics of bifocal GPs
• There are 2 types of GP presbyopic correction:
• One similar to no-line spectacles (simultaneous aspheric designs)
• The other is a weighted design and sits on or near the lower lid and shifts up with downward gaze (translating designs)
  
• These are dynamic pieces of plastic that, unlike spectacles, move with the blink; therefore, achieving a good fit is critical
• It may take a lens exchange or two and up to 6-8 weeks to become adjusted to these lenses
• If patient and motivated, it is highly likely that success will be obtained

 
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