Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners

HLTOPD004 Mapping and Delivery Guide
Edge and fit ophthalmic appliances

Version 1.0
Issue Date: March 2024


Qualification -
Unit of Competency HLTOPD004 - Edge and fit ophthalmic appliances
Description
Employability Skills
Learning Outcomes and Application This unit describes the skills and knowledge required to perform edging and fitting of spectacle lenses and to apply techniques, treatments and processes to finish or repair spectacle frames and lenses.This unit applies to optical dispensers who work according to prescriptions provided by optometrists or ophthalmologists.The skills in this unit must be applied in accordance with Commonwealth and State/Territory legislation, Australian/New Zealand standards and industry codes of practice.
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.

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:

automatic edgers

hand edgers

blockers

markers

focimeters (lensmeters)

nylon groover

drill

clavulus

parallel rules

millimetre (PD) rules

frame tools

frames

lenses

adhesive and protection pads/films

formers

frame heater

soldering unit

tint bath

dyes

modelling of industry operating conditions, including:

integration of time constraints

integration of problem solving activities

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

Prerequisites/co-requisites
Competency Field
Development and validation strategy and guide for assessors and learners Student Learning Resources Handouts
Activities
Slides
PPT
Assessment 1 Assessment 2 Assessment 3 Assessment 4
Elements of Competency Performance Criteria              
Element: Elements define the essential outcomes
       
Element: Prepare for edging and fitting
  • Access and correctly interpret required information and prescriptions
  • Prepare and check equipment and instruments for operational readiness
  • Select and prepare personal protective equipment as required
       
Element: Perform edging and fitting
  • Edge lenses following the tolerances allowed by Australian standards
  • Produce accurate formers
  • Use special hand-edging techniques to modify lenses for change-overs and centring corrections
  • Edge, drill, groove and mount spectacle lenses to frames
  • Edge, drill and mount spectacle lenses to rimless frames
       
Element: Adjust and repair frames and lenses
  • Repair and modify spectacle frames to meet client needs
  • Complete standard alignment of frames to required standards
  • Produce tinted lenses to required standards
       
Element: Utilise computer technology
  • Select appropriate technology andsoftware applications to achieve the requirements of the task
  • Adjust workspace, furniture and equipment to suit the ergonomic requirements of the user
  • Use technology according to organisation requirements and in a way which promotes a safe work environment
  • Carry out or arrange routine maintenance in order to ensure that equipment is maintained in accordance with manufacturer’s instructions and organisation requirements
  • Identify equipment faults and take action in accordance with manufacturer’s instructions or by reporting fault to designated person
       
Element: Conduct final checking procedures against Australian standards
  • Determine any axis or centring error and apply Australian standards tolerances.
  • Verify powers, axes and centration by checking the spectacles on the focimeter
  • Check lens surface for scratching and aberrations
  • Adjust the frame to standard alignment
  • Check metal framed spectacles for strain and reduce as required
  • Clean spectacles using appropriate cleaners
  • Clean, maintain and store equipment in accordance with manufacturers requirements and infection control procedures
  • Accurately document procedures undertaken according to organisation procedure
       


Evidence Required

List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.

ELEMENT

PERFORMANCE CRITERIA

Elements define the essential outcomes

Performance criteria describe the performance needed to demonstrate achievement of the element.

1. Prepare for edging and fitting

1.1 Access and correctly interpret required information and prescriptions

1.2 Prepare and check equipment and instruments for operational readiness

1.3 Select and prepare personal protective equipment as required

2. Perform edging and fitting

2.1 Edge lenses following the tolerances allowed by Australian standards

2.2 Produce accurate formers

2.3 Use special hand-edging techniques to modify lenses for change-overs and centring corrections

2.4 Edge, drill, groove and mount spectacle lenses to frames

2.5 Edge, drill and mount spectacle lenses to rimless frames

3. Adjust and repair frames and lenses

3.1 Repair and modify spectacle frames to meet client needs

3.2 Complete standard alignment of frames to required standards

3.3 Produce tinted lenses to required standards

4. Utilise computer technology

4.1 Select appropriate technology andsoftware applications to achieve the requirements of the task

4.2 Adjust workspace, furniture and equipment to suit the ergonomic requirements of the user

4.3 Use technology according to organisation requirements and in a way which promotes a safe work environment

4.4 Carry out or arrange routine maintenance in order to ensure that equipment is maintained in accordance with manufacturer’s instructions and organisation requirements

4.5 Identify equipment faults and take action in accordance with manufacturer’s instructions or by reporting fault to designated person

5. Conduct final checking procedures against Australian standards

5.1 Determine any axis or centring error and apply Australian standards tolerances.

5.2 Verify powers, axes and centration by checking the spectacles on the focimeter

5.3 Check lens surface for scratching and aberrations

5.4 Adjust the frame to standard alignment

5.5 Check metal framed spectacles for strain and reduce as required

5.6 Clean spectacles using appropriate cleaners

5.7 Clean, maintain and store equipment in accordance with manufacturers requirements and infection control procedures

5.8 Accurately document procedures undertaken according to organisation procedure

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:

edged and fitted at least 10 pairs of spectacles to Australian standards, demonstrating the appropriate handling of the following types of frames and materials:

nylon (nyl-tag) rimless

metal full rim

plastic full rim

automatically edged lenses using:

former cutting

blocking/chucking systems

machine operation

drilling

grooving

hand edged lenses using:

hand bevelling techniques

safety chamfering

changeovers

addressed common lens problems:

rectifying off-axis lenses

reducing unwanted vertical and/or horizontal prism

repaired and modified spectacle frames, including:

alignment

refitting nylon

re-pinning and riveting joints

sink joints

soldering metal frames

undertaking frame part replacements

undertake digital fame tracing

used the features of a manual focimeter for the following tasks:

correct neutralisation

determination of additions

determination of axes

determination of centration

determination of powers

determination of prism

accurately calculated minimum size uncut (MSU) using centration chart and by calculation to allow for papillary distance (PD) and decentration for prism

made templates and eliminated errors using:

hand techniques

machine techniques

tinted lenses to match tint samples

mounted lenses

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:

Australian standards tolerances

transmission and absorption data and its role in edging and fitting

properties of lenses, including:

refractive index

abbe value

specific gravity

impact resistance

transmission and absorption

features and use of impact resistant safety lenses including:

advantages and disadvantages

Australian standards for both general purpose and industrial use

evaluation of materials including glass, CR-39 (allyl diglycol carbonate), trivex, higher index plastics, polycarbonate and laminates

impact resistance

impact testing requirements, conditions and procedures

principles and processing of chemical toughening

problems and special lens requirements

filter and tinted lens processes including:

Australian standards requirements

plastic lens tinting including dyes and tint types, equipment, preparation, problems and solutions

transmission testing including equipment and instrumentation, equipment limitations and Australian standards

vacuum coatings and their use, including:

absorptive (tinted) coatings

handling, cleaning and care of coatings

manufacturing processes

multiple layer antireflection (AR) coatings

single AR coating

the effects of surface reflections and ghost images on lenses

edging and fitting glazing techniques

frame measurement systems including boxing and datum

features of different frames and rims and how to work with them:

different frame materials and their scope of use

techniques for working with frames and rims heating, manipulation, adjusting, handling and repair

rimless types

drilled rimless frames

standard nylon rims

nasal cut and nasal add techniques

features and functions of edging and fitting equipment:

automatic edgers

calibration and checking tools

focimeters (lensmeters)

frame alignment tools

hand edging equipment

marking/centration devices

edging wheel designs and characteristics

machine designs

current and emerging software applications used in the optical dispensing environment


Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assignment, checklist) and due date here

Assessment task 1: [title]      Due date:

(add new lines for each of the assessment tasks)


Assessment Tasks

Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.

ELEMENT

PERFORMANCE CRITERIA

Elements define the essential outcomes

Performance criteria describe the performance needed to demonstrate achievement of the element.

1. Prepare for edging and fitting

1.1 Access and correctly interpret required information and prescriptions

1.2 Prepare and check equipment and instruments for operational readiness

1.3 Select and prepare personal protective equipment as required

2. Perform edging and fitting

2.1 Edge lenses following the tolerances allowed by Australian standards

2.2 Produce accurate formers

2.3 Use special hand-edging techniques to modify lenses for change-overs and centring corrections

2.4 Edge, drill, groove and mount spectacle lenses to frames

2.5 Edge, drill and mount spectacle lenses to rimless frames

3. Adjust and repair frames and lenses

3.1 Repair and modify spectacle frames to meet client needs

3.2 Complete standard alignment of frames to required standards

3.3 Produce tinted lenses to required standards

4. Utilise computer technology

4.1 Select appropriate technology andsoftware applications to achieve the requirements of the task

4.2 Adjust workspace, furniture and equipment to suit the ergonomic requirements of the user

4.3 Use technology according to organisation requirements and in a way which promotes a safe work environment

4.4 Carry out or arrange routine maintenance in order to ensure that equipment is maintained in accordance with manufacturer’s instructions and organisation requirements

4.5 Identify equipment faults and take action in accordance with manufacturer’s instructions or by reporting fault to designated person

5. Conduct final checking procedures against Australian standards

5.1 Determine any axis or centring error and apply Australian standards tolerances.

5.2 Verify powers, axes and centration by checking the spectacles on the focimeter

5.3 Check lens surface for scratching and aberrations

5.4 Adjust the frame to standard alignment

5.5 Check metal framed spectacles for strain and reduce as required

5.6 Clean spectacles using appropriate cleaners

5.7 Clean, maintain and store equipment in accordance with manufacturers requirements and infection control procedures

5.8 Accurately document procedures undertaken according to organisation procedure

Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.

Observation Checklist

Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice Yes No Comments/feedback
 
Access and correctly interpret required information and prescriptions 
Prepare and check equipment and instruments for operational readiness 
Select and prepare personal protective equipment as required 
Edge lenses following the tolerances allowed by Australian standards 
Produce accurate formers 
Use special hand-edging techniques to modify lenses for change-overs and centring corrections 
Edge, drill, groove and mount spectacle lenses to frames 
Edge, drill and mount spectacle lenses to rimless frames 
Repair and modify spectacle frames to meet client needs 
Complete standard alignment of frames to required standards 
Produce tinted lenses to required standards 
Select appropriate technology andsoftware applications to achieve the requirements of the task 
Adjust workspace, furniture and equipment to suit the ergonomic requirements of the user 
Use technology according to organisation requirements and in a way which promotes a safe work environment 
Carry out or arrange routine maintenance in order to ensure that equipment is maintained in accordance with manufacturer’s instructions and organisation requirements 
Identify equipment faults and take action in accordance with manufacturer’s instructions or by reporting fault to designated person 
Determine any axis or centring error and apply Australian standards tolerances. 
Verify powers, axes and centration by checking the spectacles on the focimeter 
Check lens surface for scratching and aberrations 
Adjust the frame to standard alignment 
Check metal framed spectacles for strain and reduce as required 
Clean spectacles using appropriate cleaners 
Clean, maintain and store equipment in accordance with manufacturers requirements and infection control procedures 
Accurately document procedures undertaken according to organisation procedure 

Forms

Assessment Cover Sheet

HLTOPD004 - Edge and fit ophthalmic appliances
Assessment task 1: [title]

Student name:

Student ID:

I declare that the assessment tasks submitted for this unit are my own work.

Student signature:

Result: Competent Not yet competent

Feedback to student

 

 

 

 

 

 

 

 

Assessor name:

Signature:

Date:


Assessment Record Sheet

HLTOPD004 - Edge and fit ophthalmic appliances

Student name:

Student ID:

Assessment task 1: [title] Result: Competent Not yet competent

(add lines for each task)

Feedback to student:

 

 

 

 

 

 

 

 

Overall assessment result: Competent Not yet competent

Assessor name:

Signature:

Date:

Student signature:

Date: