Basics of Contex OK E-System Lens Fitting and Troubleshooting by Dr. Matthew Martin

April 1, 2021
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Dr. Matthew Martin, a practicing optometrist and contact lens expert, discusses fitting Ortho K lenses. For fitting an Ortho K lens, he states that these are the essential areas to be considered.

  1. Patient Selection Indications 
    1. Refractive 
    2. Health Consideration 
    3. Social Influences 
  2. Patient Selection Contraindications 
    1. Refractive error 
    2. Health consideration 
    3. Social Influences 
  3. Education the patient 
  4. Warnings for the patient 
  5. Care Protocol 
    1. Solutions 
    2. Insertion and removal 
  6. Managing patient expectation 
  7. Pre-fitting Assessments 
    1. Topography 
  8. Charging your patients 
  9. Upgrading your staff 

After discussing all the details about setting up a good ortho K practice, Dr. Martin then talks about actually fitting the Lenses

  1. Different fitting methods 
    1. Empirical fitting 
    2. Trial/Diagnostic Lens fitting 
    3. Topography based software designs 
  2. Evaluating the lens on the Eye 
    1. Optimal Fluorescein Pattern 
  3. Dispensing a Ortho K lens 
  4. Corneal Topography 

Dr. Martin and Mr. Steve Ernst ends the first part of the session by answering some questions by the live audience.

Mr. Steve Ernst, a contact lens expert then leads the discussion by talking about ‘Contex’ and all the things the company is actively involved in. He talks about the different products that are available

  1. OK Lens Design 
  2. OK E-System Design 

Then, we talk about the different fitting methods and the tools provided by Context

  1. Empirical fitting 
  2. Diagnostic Set fitting 
  3. Inventory Set fitting 
  4. Topography based fitting (Medmont) 
  5. Different Ortho K fits 
  6. Fitting tools 
    1. Fluorescein grading scale 
    2. Topography tips 
  7. Study data from Contex Ortho K lenses 

Next, we review some case studies to strengthen our Ortho K concepts. Finally, we talk about some of the Myopia control designs provided by Contex. The session ends with a question and answers segment with Mr. Ernst.

References

Papers

Bullimore MA, Sinnott LT, Jones-Jordan LA. The risk of microbial keratitis with overnight corneal reshaping lenses. Optom Vis Sci. 2013 Sep;90(9):937-44.

https://pubmed.ncbi.nlm.nih.gov/23892491/

Liu YM, Xie P. The Safety of Orthokeratology–A Systematic Review. Eye Contact Lens. 2016 Jan;42(1):35-42.

https://pubmed.ncbi.nlm.nih.gov/26704136/

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