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Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients
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Binocular visual function of myopic pseudophakic monovision.

Ken Hayashi1, Motoaki Yoshida2, Hiroshi Sasaki2

  • 1Hayashi Eye Hospital, 4-23-35 Hakataekimae, Hakata-Ku, Fukuoka, 812-0011, Japan. hayashi-ken@hayashi.or.jp.

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|February 22, 2018
PubMed
Summary

Myopic monovision significantly improves uncorrected distance and intermediate vision in pseudophakic patients. Near vision, corrected acuity, and stereoacuity remained comparable, indicating its utility for spectacle-free near and intermediate sight.

Keywords:
All-distance visual acuityCataract surgeryMyoic patientsStereoacuity

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Area of Science:

  • Ophthalmology
  • Vision Science
  • Refractive Surgery

Background:

  • Pseudophakic patients with myopia often seek visual correction strategies.
  • Monovision, an alternative to full correction, involves targeting different refractive errors between eyes.
  • Myopic monovision specifically aims to correct distance vision while retaining some myopia for near tasks.

Purpose of the Study:

  • To compare binocular visual function in myopic pseudophakic patients using myopic monovision versus those without monovision.
  • To evaluate the impact of myopic monovision on uncorrected and corrected visual acuity, contrast sensitivity, and stereoacuity.

Main Methods:

  • A randomized comparative study involving sixty pseudophakic patients.
  • Two groups were established: a myopic monovision group (dominant eye targeted to -2.75D, non-dominant to -1.75D) and a non-monovision group (bilaterally targeted to -2.75D).
  • All-distance vision testing, contrast visual acuity, and near stereoacuity were assessed.

Main Results:

  • The myopic monovision group demonstrated significantly better binocular uncorrected distance visual acuity (UDVA) and intermediate visual acuity (UIVA) compared to the non-monovision group.
  • Binocular uncorrected near visual acuity (UNVA) at 0.3m did not show significant differences between the groups.
  • Corrected visual acuity, contrast sensitivity, and stereoacuity were comparable between the myopic monovision and non-monovision groups.

Conclusions:

  • Myopic monovision offers a significant advantage in binocular UDVA and UIVA for pseudophakic patients.
  • The technique appears beneficial for patients desiring spectacle-free vision at near and intermediate distances.
  • UNVA, corrected visual acuity, contrast sensitivity, and stereoacuity are not compromised by myopic monovision.