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ERP Week 3
Screening for Visual Acuity
| Question | Answer |
|---|---|
| Measuring the clients ability to focus their vision is called | Accommodation or Visual Acuity |
| Visual acuity is commonly performed using a: | Snellen Eye Chart |
| The Snellen 'E' eye chart is used to test; | The vision of children and non-reading adults |
| Snellen eye charts use block letters of | Decreasing size or familiar shapes of decresing size |
| Along each line of Snellen eye chart block let set there is; | A fraction 20/20 |
| The Snellen fraction represents; | The clients visual acuity |
| 20/20 on a Snellen eye chart means | At 20ft you can see clearly what normal eyes see at 20ft |
| 20/30 on a Snellen eye chart means | At 20 ft you can see what normal eyes see clearly at 30 |
| Measuring visual Acuity; The client should be Standing; | 20ft from the Snellen chart |
| Measuring visual Acuity; The MA should hold a piece of paper; | Under the line of block letters to be read |
| Measuring visual Acuity; Ask the client to use both eyes and; | Say the block letters starting at the top of the chart from 'L-->R' until a mistake is made |
| Measuring visual Acuity; You should document the smallest line of letters; | The client is able to read or identify |
| Measuring visual Acuity; Ask the client to cover one eye with an occluder and; | Say the clock letters starting at the top of the chart from 'R-->L' until a mistake is made |
| Measuring visual Acuity; Ask the client to cover the opposit eye with an occluder and | Say the block letters starting at the top of the chart from 'L-->R' until a mistake is made |
| Measuring visual Acuity; Should be performed with and without | The client wearing their glasses or contacts |
| Measuring visual Acuity; Document the fraction associated with each letter by using the abbreviations; | OU - Both eye OD - Right eye OS - Left eye |