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Lens ordering and verification


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Lens ordering and verification

  1. 1. Lens ordering, verification and trouble shooting
  2. 2. Delivery 1. Pre-delivery Verification <ul><li>Markings </li></ul><ul><li>Distance power & prism </li></ul><ul><li>Addition </li></ul><ul><li>Fitting cross heights & PDs </li></ul>
  3. 3. Delivery ..
  4. 4. Delivery 1. Pre-delivery Verification <ul><li>Checking the addition </li></ul>
  5. 5. <ul><li>Checking the fitting cross heights and monocular PDs </li></ul>Delivery 1. Pre-delivery Verification
  6. 6. Delivery .. On eye assessment Frame fit Fitting crosses
  7. 7. Delivery .. On eye assessment Distance Vision Near Vision
  8. 8. <ul><li>The steps for solving progressive problems </li></ul><ul><ul><li>1. Question the patient </li></ul></ul><ul><ul><li>2. Re-mark the lenses and check the powers </li></ul></ul><ul><ul><li>3. Check the frame fit and fitting cross positions </li></ul></ul><ul><ul><li>4. Watch the patient using the lenses </li></ul></ul>Summary
  9. 9. Sources of errors ... <ul><li>Heights </li></ul><ul><li>Monocular PDs </li></ul><ul><li>Swapped lenses </li></ul><ul><li>Wrong power & axis </li></ul>
  10. 10. Complaints & Remedies... <ul><li>PROBLEM </li></ul><ul><li>Blurry Distance Vision </li></ul><ul><li>Possible Causes </li></ul><ul><li>Fitting too high </li></ul><ul><li>Incorrect Rx </li></ul><ul><li>Remedies </li></ul><ul><li>Open the nose pads </li></ul><ul><li>Remake lenses </li></ul>
  11. 11. Complaints & Remedies... <ul><li>PROBLEM </li></ul><ul><li>Blurry Near Vision </li></ul><ul><li>Possible Causes </li></ul><ul><li>Fitting too low </li></ul><ul><li>Inadequate pantoscopic tilt </li></ul><ul><li>Incorrect Rx </li></ul><ul><li>Remedies </li></ul><ul><li>Bring in nose pads </li></ul><ul><li>Frame adjustments </li></ul><ul><li>Remake lenses </li></ul>
  12. 12. Complaints & Remedies... <ul><li>PROBLEM </li></ul><ul><li>Swimmy Sensation </li></ul><ul><li>Possible Causes </li></ul><ul><li>Incorrect PD & heights </li></ul><ul><li>Inadequate pantoscopic tilt </li></ul><ul><li>Facial Wrap </li></ul><ul><li>Adaptation </li></ul><ul><li>Remedies </li></ul><ul><li>Increase facial wrap </li></ul><ul><li>Pantoscopic tilt </li></ul>
  13. 13. Complaints & Remedies... <ul><li>PROBLEM </li></ul><ul><li>Reading area too small </li></ul><ul><li>Possible Causes </li></ul><ul><li>Incorrect PD </li></ul><ul><li>Fitting heights too low </li></ul><ul><li>Remedies </li></ul><ul><li>Frame adjustments </li></ul><ul><li>Refit lenses </li></ul>
  14. 14. Complaints & Remedies... <ul><li>PROBLEM </li></ul><ul><li>Having to look to the side to read </li></ul><ul><li>Possible Causes </li></ul><ul><li>Incorrect PD </li></ul><ul><li>Swapped lenses </li></ul><ul><li>Remedies </li></ul><ul><li>Refit to correct PDs </li></ul><ul><li>Swap lenses if frame symmetrical </li></ul>
  15. 15. Complaints & Remedies... <ul><li>PROBLEM </li></ul><ul><li>Having to tilt head too far back to read </li></ul><ul><li>Possible Causes </li></ul><ul><li>Incorrect PD </li></ul><ul><li>Add too weak </li></ul><ul><li>Change in design </li></ul><ul><li>Remedies </li></ul><ul><li>Bring in nose pads </li></ul><ul><li>Increase the add </li></ul><ul><li>Refit lenses </li></ul>
  16. 16. Complaints & Remedies... <ul><li>PROBLEM </li></ul><ul><li>Having to tilt head backward for distance </li></ul><ul><li>Possible Causes </li></ul><ul><li>Undercorrected hyperope </li></ul><ul><li>Overcorrected myope </li></ul><ul><li>Remedies </li></ul><ul><li>Repeat the refraction </li></ul><ul><li>Refit lenses </li></ul>
  17. 17. Complaints & Remedies... <ul><li>PROBLEM </li></ul><ul><li>Having to tilt head forward to read </li></ul><ul><li>Possible Causes </li></ul><ul><li>Add too strong </li></ul><ul><li>Remedies </li></ul><ul><li>Repeat the refraction </li></ul><ul><li>Refit lenses </li></ul>
  18. 18. Complaints & Remedies... <ul><li>PROBLEM </li></ul><ul><li>Having to tilt head forward for distance </li></ul><ul><li>Possible Causes </li></ul><ul><li>Fitting height too high </li></ul><ul><li>Remedies </li></ul><ul><li>Frame adjustment </li></ul><ul><li>Refit lenses </li></ul>
  19. 19. Locating hidden engravings <ul><li>Use a black back ground </li></ul><ul><li>Fluorescent Bulb </li></ul><ul><li>Optical hidden circle finder </li></ul>PAL ID
  20. 20. Digital lens meter PUPILLARY HEIGHT MEASURES
  21. 21. PDS KIT Ditest