Dot Motion Perception in Young Adult Emmetropes and Myopes.
Significance: Central motion perception, as assessed by minimum displacement detection, was reduced in highly myopic eyes. Peripheral motion detection may be influenced by myopia, particularly in the inferior-nasal retina.Purpose: Motion discrimination is a complex visual task processed mainly via t...
| Published in: | Optometry & Vision Science Vol. 95; no. 6; pp. 498 - 505 |
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| Main Authors: | , , |
| Format: | Journal Article |
| Published: |
Wiley-Blackwell
Jun2018
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=129915454&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 129915454 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 10405488 1X24 jtl: Optometry & Vision Science issn: 10405488 maglogo: N pubinfo: dt: Jun2018 vid: 95 iid: 6 pid: 480 pub: Wiley-Blackwell place: Malden, Massachusetts artinfo: ui: 129915454 129915454 NLM29787492 10.1097/OPX.0000000000001223 NLM29787492 129915454 ppf: 498 ppct: 7 formats: tig: atl: Dot Motion Perception in Young Adult Emmetropes and Myopes. aug: au: Kuo, Hui-Ying Atchison, David A. Schmid, Katrina Leanne affil: School of Optometry & Vision Science, Faculty of Health, and Institute of Health & Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland, Australia sug: subj: Visual Acuity Physiology Myopia Physiopathology Visual Perception Physiology Vision Tests Female Young Adult Tomography, Optical Coherence Adult Visual Fields Physiology Adolescence Refraction, Ocular Male Retina Adult: 19-44 years Adolescent: 13-18 years Female Male ab: Significance: Central motion perception, as assessed by minimum displacement detection, was reduced in highly myopic eyes. Peripheral motion detection may be influenced by myopia, particularly in the inferior-nasal retina.Purpose: Motion discrimination is a complex visual task processed mainly via the magnocellular pathway. We investigated whether it is affected in myopia.Methods: Ninety young adults aged 18 to 28 years participated: 30 emmetropes (spherical equivalent refractions +1.00 to -0.50 diopters [D]), 30 low myopes -1.00 to -4.75 D) and 30 higher myopes (<-5 D). Random dot patterns were used to measure motion perception thresholds for minimum displacement (Dmin), maximum displacement (Dmax), and motion coherence tasks. Each task was performed centrally and at four oblique peripheral visual field locations (at 3.65 and 12 degrees for Dmin and Dmax tasks, respectively). Macular retinal thickness was measured with optical coherence tomography.Results: The central Dmin task was correlated significantly with refraction (r = -0.303, P = .004) and axial length (r = +0.224, P = .04), and the superior-temporal field Dmin task was correlated significantly with axial length (r = 0.230, P = .04). Higher myopes had poorer performance than emmetropes by 25% (higher values). For the Dmin peripheral task and for Dmax and coherence tasks at both central and peripheral locations, there were no significant correlations with refraction or axial length. At three of four positions, the peripheral Dmin task was correlated significantly with thickness in the corresponding retinal region: superior-temporal Dmin (Pearson r = -0.357, P < .001), inferior-nasal Dmin (r = -0.237, P = .03) and inferior-temporal Dmin (r = -0.233, P = .03).Conclusions: Central motion perception, as assessed by minimum displacement detection, was reduced by 25% in highly myopic eyes. Peripheral motion detection may be influenced by myopia, particularly in the inferior-nasal retina. Retinal stretching due to axial elongation may be linked to reduced performance in higher myopes. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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