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Short-Term Clinical Results of Preferred Retinal Locus Training

Ayşe Bozkurt Oflaz1, Banu Turgut Öztürk2, Şaban Gönül2

  • 1University of Health Sciences Turkey, Adana City Training and Research Hospital, Clinic of Ophthalmology, Adana, Turkey

Turkish Journal of Ophthalmology
|February 24, 2022
PubMed
Summary

Acoustic biofeedback training using microperimetry significantly improved fixation stability, reading speed, contrast sensitivity, and quality of life in patients with macular scarring and foveal scars.

Keywords:
Low vision rehabilitationmicroperimetrypreferred retinal locus training

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Area of Science:

  • Ophthalmology
  • Low Vision Rehabilitation
  • Visual Neuroscience

Background:

  • Macular scarring, often resulting from conditions like age-related macular degeneration, can lead to significant visual impairment and reduced quality of life.
  • Effective rehabilitation strategies are crucial for improving functional vision in individuals with foveal scars and compromised fixation.

Purpose of the Study:

  • To evaluate the efficacy of acoustic biofeedback training, integrated with microperimetry, as a rehabilitation tool for patients with foveal scars.
  • To assess the impact of this training on visual acuity, fixation stability, reading speed, contrast sensitivity, and quality of life.

Main Methods:

  • Twenty-nine patients with foveal scars and an eligible retinal locus were enrolled.
  • Acoustic biofeedback training was delivered using the MAIA microperimeter (Macular Integrity Assessment).
  • Key parameters including best-corrected visual acuity (BCVA), fixation stability (P1, P2, BCEA), contrast sensitivity, reading speed (MNREAD), and quality of life (NEI-VFQ-25) were measured before and after the 8-week training intervention.

Main Results:

  • Following 8 weeks of training, significant improvements were observed in fixation stability parameters (P1 and P2, p<0.001).
  • Reading speed increased significantly from 38.28 to 45.34 words per minute (p<0.001).
  • Statistically significant enhancements were also noted in contrast sensitivity and quality of life scores.

Conclusions:

  • Acoustic biofeedback training, initiated by the fifth session, effectively improved visual function in patients with macular scarring.
  • The training enhanced fixation stability, reading speed, contrast sensitivity, and overall quality of life, demonstrating its therapeutic potential.