#GP Lens Fitting Tools and Techniques #hardlenses #rgp | OOLS | Jennifer S. Harthan

#GP Lens Fitting Tools and Techniques #hardlenses #rgp | OOLS | Jennifer S. Harthan

🎙 Jennifer S. Harthan 👥 6K 📅 December 7, 2025 ⏱ 53 min 👁 345 📄 expert opinion 🧭 2026-08-16
Available in: English (current) Français

Keywords

GP lensesfittingfluoresceinbase curvetoric lenses

Summary

This video is a lecture by Dr. Jennifer S. Harthan on gas permeable (GP) lens fitting tools and techniques. She begins by emphasizing the benefits of GP lenses, including superior vision and patient retention. She then discusses the importance of fluorescein evaluation, introducing the ABCs of lens fit: central alignment (A), mid-peripheral bearing (B), and edge clearance (C). She recommends using a Wratten filter to enhance fluorescein pattern visibility. The lecture covers the selection of lens parameters, starting with diameter, then base curve, and power calculation, including the ‘SAM/FAP’ rule for power adjustments. She explains how corneal topography/tomography aids in determining whether a spherical or toric GP lens is needed, using examples of patients with varying corneal astigmatism. The session concludes with a case example and a Q&A segment, providing practical tips for clinicians.

134 words

Critical Evaluation

Value of the Information & Strength of the Argument

The video provides valuable, practical information for optometrists and contact lens practitioners. The argumentation is solid, based on the speaker’s extensive clinical experience and established fitting principles. She clearly explains the rationale behind each step, such as why diameter is selected first and how corneal astigmatism influences lens design. The use of visual aids, including fluorescein patterns and topography maps, enhances understanding. The speaker also addresses common pitfalls, such as surface quality issues, and offers troubleshooting advice. The content is well-structured and logically presented, making it a useful resource for both novice and experienced fitters.

Scientific Rigor, Source Quality, Title Accuracy

The scientific rigor is high, as the speaker is a recognized expert in the field, with numerous publications and leadership roles. The information aligns with standard clinical practices and guidelines, though specific sources are not cited within the video. The title accurately reflects the content, focusing on GP lens fitting tools and techniques. The video does not include any advertising or sponsored content. The description provides links to the organizing institution and media partner, but these are not directly related to the scientific content. Overall, the content is reliable and trustworthy, though it would benefit from explicit references to supporting literature.

211 words

Title / Content Match

The title accurately reflects the content, which focuses on GP lens fitting tools and techniques.

Quality & Reliability

8/10

The content is presented by an expert in the field with extensive clinical and academic experience. The information is based on established clinical practices and guidelines, though it is primarily anecdotal and experience-based rather than citing specific peer-reviewed studies.

Key Moments

Cited Sources

  • OOLS Website — Organizing institution for the lecture series
  • S.K. Optics Website — Managing organization of OOLS
  • Nerdy Optometrist — Media partner and podcast resource

Concurring Sources

  • GP Lens Institute — Provides educational resources and guidelines for GP lens fitting, consistent with the video's content.

Contribution & Novelties

The video offers a comprehensive, practical guide to GP lens fitting, emphasizing the importance of fluorescein evaluation and the ABCs of lens fit. It provides clear guidance on parameter selection, including diameter, base curve, and power calculation, with useful mnemonics like SAM/FAP. The speaker’s experience-based tips, such as using a Wratten filter and optic section, add practical value. The content is particularly useful for clinicians seeking to improve their GP fitting skills.

Pour aller plus loin :

113 words

Radar Profile

The radar profile shows high scores in information quantity, quality, and reliability, with a slightly lower technical level. This indicates a well-balanced, expert-led presentation that is accessible yet detailed, suitable for practitioners seeking to enhance their GP fitting skills.

Reliability 8/10