Assessment Requirements for HLTOPD003 Dispense atypical prescriptions

Release: 1

Assessment Requirements for HLTOPD003 Dispense atypical prescriptions

Modification History

Release	Comments
Release 1	This version was released in HLT Health Training Package release 2.0 and meets the requirements of the 2012 Standards for Training Packages. Significant changes to the elements and performance criteria. New evidence requirements for assessment, including volume and frequency requirements. Significant change to knowledge evidence. Removed prerequisites.

Performance Evidence

The candidate must show evidence of the ability to complete tasks outlined in elements and performance criteria of this unit, manage tasks and manage contingencies in the context of the job role. There must be evidence that the candidate has:

dispensed optical appliances in response to at least 5 different atypical prescription needs

determined the criteria for atypical dispensing, including making accurate calculations for the following:

change in vertex distance

compensated power (Fc)

effective power (Fe)

effectivity

prescriptions requiring compensations

calculated differential prismatic effect and compensation using different sized segments, Fresnel prisms, or slab off bifocals

calculated field of view and determine ways to improve the field of view

calculated spectacle magnification and determine ways to reduce the effects of aniseikonia

compounded and resolved prism

Knowledge Evidence

The candidate must be able to demonstrate essential knowledge required to effectively complete tasks outlined in elements and performance criteria of this unit, manage tasks and manage contingencies in the context of the work role. This includes knowledge of:

legal and ethical considerations for dispensing optical advice to clients:

duty of care

informed consent

privacy, confidentiality and disclosure

records management

work role boundaries – responsibilities and limitations

work health and safety

requirements of dispensing spectacles to clients with special or complex needs, including:

low vision, what it is, and how various aids may be used to assist such clients

types of atypical prescriptions, how to interpret and transpose them, including:

anisometropia

aphakia

high ametropia

prism

features and capabilities of aphakic lenses including:

aspheric lens design

centering

compensating for vertex distance change

edging/bevelling profile

full field lens design

general problems associated with dispensing aphakic lenses including jack-in-the-box effect and ring scotoma

lenticular designs

field of view and its impact on atypical dispensing, including:

apparent versus real

aspheric lenses

calculations

high minus corrections

high plus corrections

features of high ametropia including:

back vertex power (F’v) front vertex power (Fv)

compensated surface power

corrections

prescription requirements and constraints

thick lens power

types

high minus lenses and negative lenticulars and how they are used, including:

centering

compensating for vertex distance change

dispensing high index materials

edging/bevelling profile

high index materials

lenticular types and designs

surface reflections and the need for anti-reflection and multi-coatings

high prismatic corrections and how they are achieved, including:

edging/bevelling profile

fresnels and their use

high horizontal prism

high vertical prism

ways to respond to aniso and antimetropia including:

base curve selection

correcting vertical imbalance problems

effects of lens form (shape)

effects of thickness

prism differential

features of spectacle magnification including:

effects on visual acuity

positive compared to negative lenses

retinal image size

Assessment Conditions

Skills must have been demonstrated in the workplace or in a simulated environment that reflects workplace conditions. The following conditions must be met for this unit:

use of suitable facilities, equipment and resources, including:

vertex distance calculator (disc or table/chart)

vertex distance rule

vertex distance calliper (distometer type)

lens measure

pupillary distance (PD) rule

pupillometer

thickness callipers

modelling of industry operating conditions, including integration of problem solving activities

Assessors must satisfy the Standards for Registered Training Organisations (RTOs) 2015/AQTF mandatory competency requirements for assessors.

Links

Companion Volume implementation guides are found in VETNet - https://vetnet.gov.au/Pages/TrainingDocs.aspx?q=ced1390f-48d9-4ab0-bd50-b015e5485705