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Comparing habitual and i. Scription refractions.

Nicole M Putnam1, Balamurali Vasudevan2, Andre Juarez1

  • 1Midwestern University, College of Optometry, 19555 N 59th Ave, Glendale, Arizona, 85308, USA.

BMC Ophthalmology
|February 14, 2019
PubMed
Summary

The i.Scription method refines vision correction for better night vision. Precise adjustments to sphere and cylinder values correlate with reduced night vision discomfort, especially for myopic patients.

Keywords:
I.ProfilerplusI.ScriptionNight myopiaOptical aberrationsPseudomyopia

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Area of Science:

  • Ophthalmology
  • Optometry
  • Vision Science

Background:

  • Many patients experience poor night vision despite good visual acuity.
  • Pupil dilation in low light exacerbates visual performance issues from uncorrected refractive errors.
  • The i.Scription method utilizes ocular aberration data for optimized refraction.

Purpose of the Study:

  • To compare habitual and i.Scription refractions.
  • To investigate the relationship between these refractions and night vision complaints.

Main Methods:

  • Collected habitual, subjective, and i.Scription refractions from 18 subjects.
  • Measured ocular aberrations using the Zeiss i.Profiler®plus.
  • Assessed night driving difficulty on a 1-10 scale.

Main Results:

  • i.Scription significantly differed from habitual and subjective refractions in sphere and cylinder values.
  • Night vision discomfort correlated with changes in spherical equivalent correction (p=0.01).
  • This correlation was stronger in myopic subjects (p=0.002).

Conclusions:

  • The i.Scription method enhances night vision through precise sphere and cylinder correction.
  • Changes in cylinder correction between habitual and i.Scription prescriptions are linked to night vision discomfort.