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Related Experiment Video

Updated: Oct 30, 2025

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Peripheral vision and hazard detection with average phakic and pseudophakic optical errors.

Abinaya Priya Venkataraman1,2, Robert Rosén3, Aixa Alarcon Heredia3

  • 1Department of Applied Physics, Biomedical and X-ray Physics, KTH Royal Institute of Technology, Stockholm, Sweden.

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Summary

Intraocular lenses can cause peripheral optical errors, negatively impacting vision clarity and hazard detection. These pseudophakic errors affect functional vision, especially in the periphery.

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Area of Science:

  • Ophthalmology
  • Visual Optics
  • Optical Engineering

Background:

  • Intraocular lenses (IOLs) are implanted during cataract surgery.
  • Peripheral optical quality can be affected by IOLs, potentially impacting visual function.
  • Understanding these effects is crucial for optimizing visual outcomes after surgery.

Purpose of the Study:

  • To evaluate the impact of peripheral optical errors induced by intraocular lenses on visual performance.
  • To compare the effects of simulated phakic and pseudophakic optical errors in the peripheral visual field.
  • To assess the influence of these errors on resolution acuity, contrast sensitivity, and hazard detection.

Main Methods:

  • Simulated peripheral optical errors using an adaptive optics system in phakic subjects.
  • Induced errors in the 20° nasal and inferior visual fields.
  • Evaluated peripheral resolution acuity, contrast sensitivity, and performance in a hazard detection task.

Main Results:

  • Pseudophakic errors, typical of monofocal IOL designs, reduced resolution acuity and contrast sensitivity.
  • The hazard detection task showed increased false positives, more misses, and longer reaction times with pseudophakic errors compared to phakic errors.
  • Peripheral visual performance and functional vision were negatively affected by induced peripheral pseudophakic optical errors.

Conclusions:

  • Peripheral optical errors from intraocular lenses significantly degrade visual performance.
  • Monofocal IOL designs can induce aberrations that impair critical visual functions like hazard detection.
  • These findings highlight the importance of considering peripheral optical quality for functional vision in pseudophakic eyes.