Management of peripheral vision loss

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Low vision management strategies for patients with severely constricted visual fields Content prepared by Dr Meri Vukicevic

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Transcript of Management of peripheral vision loss

Page 1: Management of peripheral vision loss

Low vision management strategies for patients with severely constricted visual fields

Content prepared by

Dr Meri Vukicevic

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Lionel Messina

• Lionel

• 45y/o

• Dx with RP age 30

• C/o: decreased peripheral VA, night blindness, difficulty with light/dark adaptation, problems with mobility

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Lionel – Initial consultation

GH: Good, no medicationsPOH: Glasses since teenagerVert: R) -0.50/-1.00x45 L) -0.75/-1.00x60 (Single vision distance gls)VA cc: R) 6/12 L) 6/9Near vision BEO = n5 slowly (takes glasses off to read)Subj Refn: R) -0.75/-1.00x50 = 6/9 pt L) No changeAdd +1.00 = n5 with light, BEO

Contrast (Pelli Robson):0.90 log BEO (moderately reduced contrast)Colour vision (CUCVT): non-specific colour vision loss, greater in the tritanzoneVisual field (Humphrey): severely constricted R&L to within 10 degrees from fixation

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Peripheral vision – basic functions

Image from Wikimedia CommonsAuthor: Sanet Steyn

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http://www.medicine.mcgill.ca/physio/vlab/other_exps/eog/images/yargirl.gif

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http://adhidas-adhi.blogspot.com.au/2012/11/my-ever-busy-indian-road.html

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http://www.dzineblog360.com/2011/03/30-night-time-photographic-images-to-die-for-2/

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Scanning training

• Simple object

• Uncluttered table

• Instruct patient to search by moving their eyes

– ‘sweeping’ movement

– Up, down, left, right

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Scanning training

Start 1

2 3

4 5

6 End

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Scanning training

A B C

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External service

https://www.guidedogsvictoria.com.au/our-services/acquired-brain-injury/

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Further reading


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Aging & Vision Loss: There’s More Than Meets the Eye€¦ · Aging and Vision Loss Aging and vision loss both independently associated with: Mobility decline Falls risk Impairment

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Indescribable Vision Loss

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Functional vision loss table 2

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Peripheral Vision Funded by the Skills Funding Agency.

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Central and peripheral vision for scene recognition: A ...cseweb.ucsd.edu/~gary/pubs/JOV-Version-Panqu.pdf · Central and peripheral vision for scene recognition: A neurocomputational

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Gaining Visual InformationGaining Visual Information - Focus Vision - Focus Vision - Central Vision - Central Vision - Peripheral Vision - Peripheral Vision.

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The Role of Peripheral Vision in Flow Parsingorca.cf.ac.uk/69688/2/2015rogersphd.pdf · vision (i.e. Warren & Rushton, 2008). This thesis aims to characterise the role of peripheral

The Role of Peripheral Vision in Flow Parsingorca.cf.ac.uk/69688/2/2015rogersphd.pdf · vision (i.e. Warren & Rushton, 2008). This thesis aims to characterise the role of peripheral

The contributions of central versus peripheral vision to ... contributions of central versus peripheral vision to scene gist recognition Adam M. Larson Department of Psychology, Kansas

The contributions of central versus peripheral vision to ... contributions of central versus peripheral vision to scene gist recognition Adam M. Larson Department of Psychology, Kansas

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Surround-See: Enabling Peripheral Vision on Smartphones during …xingdong/papers/Surround... · 2016-12-03 · 1 Surround-See: Enabling Peripheral Vision on Smartphones during Active

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Gradual loss of vision (opthalmology)

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Mechanical Swallowing Disorders. Mechanical Disorders Secondary to: Muscle loss Loss of motor and/or sensory innervation Peripheral structure loss Oral.

Mechanical Swallowing Disorders. Mechanical Disorders Secondary to: Muscle loss Loss of motor and/or sensory innervation Peripheral structure loss Oral.