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Updated: Aug 6, 2026
14:34
How to Create and Use Binocular Rivalry
Published on: November 10, 2010
[Does the type of lens influence stereoscopic vision]
A Liekfeld1, E C Schwarz, E Waffenschmidt
1Augenklinik, Universitätsklinkum Charité, Campus Virchow-Klinikum, Humboldt-Universität, Augustenburger Platz 1, 13353 Berlin. anja.liekfeld@charite.de
Summary
Multifocal intraocular lenses (MIOL) and monofocal intraocular lenses (IOL) impact stereopsis. Patients with bilateral MIOL or IOL demonstrated good binocular vision and random dot stereopsis at near and far distances.
Area of Science:
- Ophthalmology
- Visual Neuroscience
Background:
- Stereopsis quality is influenced by age and intraocular lens (IOL) type.
- Multifocal intraocular lenses (MIOL) are hypothesized to offer superior random dot stereopsis compared to monofocal IOLs.
Purpose of the Study:
- To investigate the influence of different IOL types, including various MIOL designs, on stereopsis.
- To compare the stereopsis outcomes between phakic individuals, and patients with monofocal and multifocal IOLs.
Main Methods:
- 153 participants were categorized into six groups: young phakic, elder phakic, bilateral monofocal IOL, bilateral diffractive MIOL, bilateral refractive MIOL, and unilateral diffractive/refractive MIOL.
- Stereopsis was assessed using the Pola test (2D and random dot) and compared with Lang, Titmus, and Monjé tests for near vision.
- Near and distance visual acuity, along with orthoptic examinations, were conducted prior to stereopsis testing.
Main Results:
- Young phakic subjects showed high performance (81-100%) across all stereopsis tests.
- Elder phakic subjects demonstrated reduced performance (36-88%) compared to younger individuals.
- Patients with bilateral monofocal IOLs (19-62%) and various MIOLs (5-61%) exhibited varying degrees of stereopsis perception, generally lower than phakic groups.
Conclusions:
- All patients receiving bilateral monofocal or multifocal IOLs achieved satisfactory binocular vision.
- Good random dot stereopsis was observed in patients with bilateral mono- or multifocal IOLs at both near and far distances.
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