Nzqa registered unit standard 24895 version 2



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NZQA registered unit standard

24895 version 2




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Title

Describe the visual system and vision impairment

Level

3

Credits

5




Purpose

This unit standard is for people providing services in a health or wellbeing setting.
People credited with this unit standard are able to describe: the visual system; refraction and its effects on vision; the effects of vision impairment on a person; and agencies or support services and roles of professionals that are specific to people with vision impairment.




Classification

Health, Disability, and Aged Support > Sensory Support




Available grade

Achieved


Explanatory notes
Definitions

Health or wellbeing setting includes but is not limited to – the aged care, acute care, community support, disability, mental health, and social services sectors.

Person – a person accessing services. Other terms used for the person may include client, consumer, customer, patient, individual, resident, service user, tūroro or tangata whai ora.

Vision impairment – a wide range of visual difficulties that can be placed on a continuum that ranges from mild interferences in the visual system to total blindness.
Outcomes and evidence requirements
Outcome 1
Describe the visual system.
Evidence requirements
1.1 The visual system is described in terms of the basic structure and functions.
Range structure includes but is not limited to – cornea, aqueous, iris, pupil, lens, vitreous, retina, macula, optic nerve, visual cortex.
1.2 The process of seeing an object is described in simple terms from object to visual cortex.
1.3 Changes to the visual system are described in terms of an individual’s life stage.
Range life stage includes but is not limited to – infancy, childhood, adolescence, adult, older adult.
Outcome 2
Describe refraction and its effects on vision.
Range effects include but are not limited to – myopia, hyperopia, astigmatism.
Evidence requirements
2.1 Refraction is described in terms of the change in light path at the junction of two optical media.
2.2 Errors in refraction are described in terms of their effect on vision.
Range evidence is required for three errors.
2.3 Prescription lenses to correct errors in refraction are described in terms of their effect on a person’s vision.
Outcome 3
Describe the effects of vision impairment on a person.
Evidence requirements
3.1 Common vision impairments are described in terms of their effect on everyday use of vision.
Range vision impairment must include but is not limited to – hyperopia, myopia, astigmatism, colour sensitivity, amblyopia.
3.2 The difference between blindness and vision impairment is described in terms of the impact on a person.
3.3 Effects of vision impairment are described in terms of their potential impact on a person’s lifestyle.
Range effects include but are not limited to – psychological, social, educational, recreational, vocational.
3.4 Common misconceptions about vision impairment are described in terms of their impact on a person.
Range evidence is required of three common misconceptions.
Outcome 4
Describe agencies or support services and roles of professionals that are specific to people with vision impairment.
Evidence requirements
4.1 Agencies or support services are described in terms of the services offered and the types of people with vision impairments they are able to assist.
Range evidence is required of three agencies or support services.
4.2 The roles of professionals who are part of vision referral pathways are described in terms of their areas of specialisation.
Range roles must include but are not limited to – ophthalmologist, optician, optometrist, orthoptist.


Planned review date

31 December 2019


Status information and last date for assessment for superseded versions

Process

Version

Date

Last Date for Assessment

Registration

1

20 March 2009

31 December 2017

Review

2

16 April 2015

N/A




Consent and Moderation Requirements (CMR) reference

0024

This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note

Providers must be granted consent to assess against standards (accredited) by NZQA, before they can report credits from assessment against unit standards or deliver courses of study leading to that assessment.


Industry Training Organisations must be granted consent to assess against standards by NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and which are assessing against unit standards must engage with the moderation system that applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies to this standard are outlined in the Consent and Moderation Requirements (CMRs). The CMR also includes useful information about special requirements for organisations wishing to develop education and training programmes, such as minimum qualifications for tutors and assessors, and special resource requirements.
Comments on this unit standard
Please contact the Community Support Services ITO Limited enquiries@careerforce.org.nz if you wish to suggest changes to the content of this unit standard.


Community Support Services ITO Limited

SSB Code 101814



Ó New Zealand Qualifications Authority 2017






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