Snellen chart - Revision history

Lloydmom: /* How to use a Snellen Chart to measure visual acuity */

2024-02-12T00:13:19Z

How to use a Snellen Chart to measure visual acuity

← Older revision		Revision as of 00:13, 12 February 2024
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	# Make a mark on the floor at the distance the chart is rated for.		# Make a mark on the floor at the distance the chart is rated for.
	# Stand so that your face is above that line.		# Stand so that your face is above that line.
	# Gently cover one eye (without actually touching it)		# Gently cover one eye (without actually touching it).
	# Read the lowest line you can see clearly.		# Read the lowest line you can see clearly.
	# Attempt to read the next line down.		# Attempt to read the next line down.
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	# Repeat steps 5-8 with the other eye covered.		# Repeat steps 5-8 with the other eye covered.
	# Repeat once more with both eyes together.		# Repeat once more with both eyes together.


			Please note: Unless you are in low myopia territory snellen measurements are intended to measure your vision with your distance correction.

			Also important to know: Lighting will effect your results and due to the nature of the diopter bubble longer charts (6m/20ft) are more accurate than the short charts (3m/10ft), though both are perfectly acceptable methods to track vision trends over time.

	==How to use a Snellen Chart with refraction==		==How to use a Snellen Chart with refraction==

Lloydmom: /* See Also */

2024-02-08T13:35:03Z

Lloydmom: /* See Also */

2024-02-08T13:34:35Z

Lloydmom: /* How to use a Snellen Chart to measure visual acuity */

2024-02-08T13:34:18Z

How to use a Snellen Chart to measure visual acuity

← Older revision		Revision as of 13:34, 8 February 2024
Line 38:		Line 38:
	# Make a mark on the floor at the distance the chart is rated for.		# Make a mark on the floor at the distance the chart is rated for.
	# Stand so that your face is above that line.		# Stand so that your face is above that line.
			# Gently cover one eye (without actually touching it)
	# Read the lowest line you can see clearly.		# Read the lowest line you can see clearly.
	# Attempt to read the next line down.		# Attempt to read the next line down.
	# Have an assistant tell you if you got the letters right or move forward to check. If you got more than half of the letters right on that line, then the ratio marked for that line is your visual acuity.		# Have an assistant tell you if you got the letters right or move forward to check. If you got more than half of the letters right on that line, then the ratio marked for that line is your visual acuity. Record.
			# Repeat steps 5-8 with the other eye covered.
			# Repeat once more with both eyes together.

	==How to use a Snellen Chart with refraction==		==How to use a Snellen Chart with refraction==
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	* [[Astigmatism_measurement]]		* [[Astigmatism_measurement]]
			* <nowiki>[[Guide:How to measure your eyesight]]</nowiki>

	==References==		==References==

Snax: /* Tools */

2022-10-16T21:04:12Z

Tools

← Older revision		Revision as of 21:04, 16 October 2022
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	* [https://www.teachengineering.org/content/cub_/activities/cub_human/cub_human_lesson06_activity1_eyechart.pdf Printable Snellen Eye Chart 6m(20 feet)]		* [https://www.teachengineering.org/content/cub_/activities/cub_human/cub_human_lesson06_activity1_eyechart.pdf Printable Snellen Eye Chart 6m(20 feet)]
	* [https://github.com/mminer237/denim-weasel Snellen chart generator]		* [https://github.com/mminer237/denim-weasel Snellen chart generator]
			* [https://eyes.arizona.edu/sites/default/files/eyechart.pdf Banner Eye Care Visual Acuity Test (BECVAT) V 2.0]
	* Some people with astigmatism may use the [https://en.wikipedia.org/wiki/Stenopaeic_slit stenopaeic slit]<ref>https://community.endmyopia.org/t/francois-journey-to-20-20/10428/3</ref> as a measuring tool		* Some people with astigmatism may use the [https://en.wikipedia.org/wiki/Stenopaeic_slit stenopaeic slit]<ref>https://community.endmyopia.org/t/francois-journey-to-20-20/10428/3</ref> as a measuring tool
	* Alternatively, you can use an [http://www.i-see.org/astigmirror.pdf astigmatism mirror/fan] along with [https://endmyopia.org/diy-tools-how-to-measure-your-astigmatism-diopters/ this guide for estimating astigmatism].		* Alternatively, you can use an [http://www.i-see.org/astigmirror.pdf astigmatism mirror/fan] along with [https://endmyopia.org/diy-tools-how-to-measure-your-astigmatism-diopters/ this guide for estimating astigmatism].

	==See Also==		==See Also==

Angel: /* Tools */ see also astigmatism measurement

2022-02-23T04:25:06Z

Tools: see also astigmatism measurement

← Older revision		Revision as of 04:25, 23 February 2022
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	* Some people with astigmatism may use the [https://en.wikipedia.org/wiki/Stenopaeic_slit stenopaeic slit]<ref>https://community.endmyopia.org/t/francois-journey-to-20-20/10428/3</ref> as a measuring tool		* Some people with astigmatism may use the [https://en.wikipedia.org/wiki/Stenopaeic_slit stenopaeic slit]<ref>https://community.endmyopia.org/t/francois-journey-to-20-20/10428/3</ref> as a measuring tool
	* Alternatively, you can use an [http://www.i-see.org/astigmirror.pdf astigmatism mirror/fan] along with [https://endmyopia.org/diy-tools-how-to-measure-your-astigmatism-diopters/ this guide for estimating astigmatism].		* Alternatively, you can use an [http://www.i-see.org/astigmirror.pdf astigmatism mirror/fan] along with [https://endmyopia.org/diy-tools-how-to-measure-your-astigmatism-diopters/ this guide for estimating astigmatism].
			==See Also==

			* [[Astigmatism_measurement]]

	==References==		==References==

Angel: /* How to use a Snellen Chart with refraction */

2022-02-23T04:22:28Z

How to use a Snellen Chart with refraction

← Older revision		Revision as of 04:22, 23 February 2022
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	{{main\|Trial lens kit}}		{{main\|Trial lens kit}}

	==Tools==		==Tools==
	* [http://www.i-see.org/block_letter_eye_chart.pdf Block Letter Eye Chart with calibration measurement instructions 20feet/6meters)]		* [http://www.i-see.org/block_letter_eye_chart.pdf Block Letter Eye Chart with calibration measurement instructions 20feet/6meters)]
	* [http://www.i-see.org/etdrs/etdrs-1.pdf ETDRS Snellen version 1 20feet/6meters]		* [http://www.i-see.org/etdrs/etdrs-1.pdf ETDRS Snellen version 1 20feet/6meters]

Snax at 04:06, 23 February 2022

2022-02-23T04:06:53Z

← Older revision		Revision as of 04:06, 23 February 2022
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	==Tools==		==Tools==
	* [http://www.i-see.org/block_letter_eye_chart.pdf Block Letter Eye Chart with calibration measurement instructions ~~20m~~/~~6ft~~)]		* [http://www.i-see.org/block_letter_eye_chart.pdf Block Letter Eye Chart with calibration measurement instructions 20feet/6meters)]
	* [http://www.i-see.org/etdrs/etdrs-1.pdf ETDRS Snellen version 1 ~~20m~~/~~6ft~~]		* [http://www.i-see.org/etdrs/etdrs-1.pdf ETDRS Snellen version 1 20feet/6meters]
	* [http://www.i-see.org/etdrs/etdrs-2.pdf ETDRS Snellen version 2 ~~20m~~/~~6ft~~]		* [http://www.i-see.org/etdrs/etdrs-2.pdf ETDRS Snellen version 2 20feet/6meters]

	* [http://www.i-see.org/etdrs/etdrs-r.pdf ETDRS Snellen version 3 ~~20m~~/~~6ft~~]		* [http://www.i-see.org/etdrs/etdrs-r.pdf ETDRS Snellen version 3 20feet/6meters]

	* [https://www.provisu.ch/images/PDF/Snellenchart_en.pdf Printable Snellen Chart 2.8m(9 feet)]		* [https://www.provisu.ch/images/PDF/Snellenchart_en.pdf Printable Snellen Chart 2.8m(9 feet)]

Snax: /* How to use a Snellen Chart with refraction */

2022-02-23T04:02:53Z

How to use a Snellen Chart with refraction

← Older revision		Revision as of 04:02, 23 February 2022
Line 56:		Line 56:
	* [https://github.com/mminer237/denim-weasel Snellen chart generator]		* [https://github.com/mminer237/denim-weasel Snellen chart generator]
	* Some people with astigmatism may use the [https://en.wikipedia.org/wiki/Stenopaeic_slit stenopaeic slit]<ref>https://community.endmyopia.org/t/francois-journey-to-20-20/10428/3</ref> as a measuring tool		* Some people with astigmatism may use the [https://en.wikipedia.org/wiki/Stenopaeic_slit stenopaeic slit]<ref>https://community.endmyopia.org/t/francois-journey-to-20-20/10428/3</ref> as a measuring tool
			* Alternatively, you can use an [http://www.i-see.org/astigmirror.pdf astigmatism mirror/fan] along with [https://endmyopia.org/diy-tools-how-to-measure-your-astigmatism-diopters/ this guide for estimating astigmatism].

	==References==		==References==

Snax: /* How to use a Snellen Chart with refraction */

2022-02-23T03:57:23Z

How to use a Snellen Chart with refraction

← Older revision		Revision as of 03:57, 23 February 2022
Line 46:		Line 46:

	==Tools==		==Tools==
			* [http://www.i-see.org/block_letter_eye_chart.pdf Block Letter Eye Chart with calibration measurement instructions 20m/6ft)]
			* [http://www.i-see.org/etdrs/etdrs-1.pdf ETDRS Snellen version 1 20m/6ft]
			* [http://www.i-see.org/etdrs/etdrs-2.pdf ETDRS Snellen version 2 20m/6ft]

			* [http://www.i-see.org/etdrs/etdrs-r.pdf ETDRS Snellen version 3 20m/6ft]

	* [https://www.provisu.ch/images/PDF/Snellenchart_en.pdf Printable Snellen Chart 2.8m(9 feet)]		* [https://www.provisu.ch/images/PDF/Snellenchart_en.pdf Printable Snellen Chart 2.8m(9 feet)]
	* [https://www.teachengineering.org/content/cub_/activities/cub_human/cub_human_lesson06_activity1_eyechart.pdf Printable Snellen Eye Chart 6m(20 feet)]		* [https://www.teachengineering.org/content/cub_/activities/cub_human/cub_human_lesson06_activity1_eyechart.pdf Printable Snellen Eye Chart 6m(20 feet)]

← Older revision		Revision as of 13:35, 8 February 2024
Line 65:		Line 65:

	* [[Astigmatism_measurement]]		* [[Astigmatism_measurement]]
	* [Guide:How to measure your eyesight]		* [[Guide:How to measure your eyesight]]

	==References==		==References==