Visual Acuity and the Snellen Chart

This video is about Visual Acuity and the Snellen Chart
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Timestamps

00:31 Setting Up a Snellen Chart
01:02 Patient Instruction and Education
01:28 Demo Visual Acuity Test
01:42: Assigning values and documenting Snellen Chart Results
03:09 What does 20/20 mean? Understanding the numbers of the Snellen Chart
03:32 When to see the doctor
03:38 What age group can I use the Snellen Chart With

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Nurses learn how to assess a patient's ability to read and compare that to a normal average adult. Using the Snellen chart, nurses will position their patients 20 feet away from the chart and instruct them through a variety of tests where both the right and left eyes are assessed separately and then both together to determine the patient's visual acuity.

There are many reasons why a patient will need a visual acuity exam completed. There may be complaints of irritation or signs of infection, injury, or declining function. This is a baseline exam that may result in a referral to an optometrist or ophthalmologist for further assessment.

Understanding how the Snellen chart is graded will help nurses accurately educate and document their findings.

In this video, we discuss how to set up your Snellen chart, patient education, and instruction for administering the exam and assigning a value and documentation.

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[melanieruiz]

Omg! Your explanation of how to conduct the Snellen Visual Acuity test is the best video I have found anywhere! Thank you so much!!

[billdunn]

Tammy rocks. THank you for showing how to do an accurate eye exam using a smellen chart

[FeralSBS]

I have a skills test tomorrow and this saved me so much time. Thank you so much!

[katusciaokana]

Thank you so much. I have a quiz this Saturday, and I couldn't quite understand how to interpret the result if a person has better than 20/20 vision like 20/10. You rock

[otiebrown]

Good review.
Currently 20/20.
Put a bright light on it.

[kdmq]

You can always sit 10 feet from a mirror that's 10 feet from a snellen test if the room isn't big enough.

[thaniabremer]

Weee thank you! i hope i pass my practical exams

[omniaalaa]

We have shared your video on our university group in Egypt . thank you so much 💓

[Katie_T]

Thank you for this! Short and to the point! :)

[kareneastman]

This is so wonderful. Thanks for making and posting the video.:-)

[AhmedMohamed-mqxz]

Thanks, ma'am. Great explanation!

[otiebrown]

Letter size?
20/20 is 0.9 cm
20/40 is 1.8 cm
All proportional.
This is
1 minute of arc,
and 2 minutes of arc.
Good review.

[DARWINZOO]

Check out the doctor from Calgary Canada. Excellent

[wildflower-web]

Thank you, that taught me what 20/20 means. What purpose do the green and red horizontal lines serve? Is it anything to do with testing for colour-blindness?

[allgood]

I wish I had X Ray vision like Superman!

[qualityreviewer]

Should the measurement be based on what the patient can see relatively clearly or up to what they can just make out even if well out of focus?

[dr.chrisstar]

Thanks
Needed a quick review!
Right On!
Dr.c*

[julia]

If a patient have eyeglasses do check both w/ and w/o glasses?

[goodheart]

we close eye with hand or paper? for reading

[JpJP]

What do the Distances between the Letters and the numbers, 1, 2, 3 etc... mean?