Assessing Refraction - Scorecard - MDSpire

Assessing Refraction

  • By

  • Melissa Barnett, OD, FAAO, FSLS

  • September 1, 2025

  • 4 min

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Clinical Scorecard: Assessing Refraction

At a Glance

CategoryDetail
ConditionIrregular Astigmatism, Keratoconus
Key MechanismsSubjective refraction techniques, scleral lens fitting, algorithm-assisted refraction
Target PopulationPatients with irregular corneas requiring scleral lenses
Care SettingOptometry and ophthalmology clinics

Key Highlights

  • Scleral lenses are beneficial for patients with irregular astigmatism.
  • Algorithm-based refraction may improve accuracy in scleral lens fittings.
  • Variability in subjective refraction can be influenced by practitioner experience.
  • Recent technologies allow for finer adjustments in refraction measurements.
  • Midday fogging and tear film variability can affect scleral lens measurement accuracy.

Guideline-Based Recommendations

Diagnosis

  • Utilize both conventional and algorithm-assisted methods for refraction in irregular corneas.

Management

  • Consider scleral lenses for patients with keratoconus and irregular astigmatism.

Monitoring & Follow-up

  • Regularly assess visual acuity and lens fit for patients using scleral lenses.

Risks

  • Be aware of potential complications such as lens decentration and midday fogging.

Patient & Prescribing Data

Individuals with primary or secondary corneal irregularities.

Algorithm-assisted refraction may yield more positive spherical equivalents than conventional methods.

Clinical Best Practices

  • Incorporate algorithm-assisted techniques to enhance refraction accuracy.
  • Monitor for unique factors affecting scleral lens wear, such as tear film thickness.

References

Original Source(s)

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