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Refraction, to determine the lens correction needed to provide optimal visual acuity for all viewing distances.? The refractive analysis may include:

  • Measurement of the patient's most recent optical correction
  • Measurement of the anterior corneal curvature (the shape of the front surface of the eye)
  • Objective measurement of refractive status
  • Subjective measurement of monocular and binocular refractive status at distance and near