Axis - Revision history

NottNott: Add reducing tips

2020-10-06T16:59:04Z

Add reducing tips

← Older revision		Revision as of 16:59, 6 October 2020
Line 1:		Line 1:
	'''Axis''' is the orientation of the [[cylinder]] portion of your lens, used to compensate for [[astigmatism]]. You don't have an axis value if you don't have [[astigmatism]]. From the lens wearer's perspective, 0 degrees of axis is horizontal, and increasing values move clockwise around the eye. The axis of cylinder is symmetrical, so it only goes from 0 to 180 degrees. The convention is that the horizontal is described as 180 rather than as 0.		'''Axis''' is the orientation, or plane of the [[cylinder]] portion of your lens, used to compensate for [[astigmatism]]. You don't have an axis value if you don't have [[astigmatism]]. From the lens wearer's perspective, 0 degrees of axis is horizontal, and increasing values move clockwise around the eye. The axis of cylinder is symmetrical, so it only goes from 0 to 180 degrees. The convention is that the horizontal is described as 180 rather than as 0.

	An axis near 90 degrees is sometimes called "with the rule" and near 180 degrees "against the rule". "against the rule" is more common in young children, while "with the rule" is more common after starting school,<ref>{{Cite journal \|last=Dobson \|first=V. \|last2=Fulton \|first2=A. B. \|last3=Sebris \|first3=S. L. \|date=1984-01-01 \|title=Cycloplegic refractions of infants and young children: the axis of astigmatism. \|url=https://iovs.arvojournals.org/article.aspx?articleid=2159731 \|journal=Investigative Ophthalmology & Visual Science \|language=en \|volume=25 \|issue=1 \|pages=83–87 \|issn=1552-5783}}</ref> and "against the rule" returns after the working years.<ref>{{Cite journal \|last=Kanellopoulos \|first=Anastasios John \|last2=Asimellis \|first2=George \|date=2015-8 \|title=Distribution and Repeatability of Corneal Astigmatism Measurements (Magnitude and Axis) Evaluated With Color Light Emitting Diode Reflection Topography \|url=https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4500657/ \|journal=Cornea \|volume=34 \|issue=8 \|pages=937–944 \|doi=10.1097/ICO.0000000000000476 \|issn=0277-3740 \|pmc=4500657 \|pmid=26057324}}</ref> It is commonly believed that the axis between your eyes is likely to have some symmetry or be 90 degrees off, but this is not true.<ref>{{Cite journal \|last=Mckendrick \|first=Allison M. \|last2=Brennan \|first2=Noel A. \|date=1997-08 \|title=The Axis of Astigmatism in Right and Left Eye Pairs: \|url=http://journals.lww.com/00006324-199708000-00029 \|journal=Optometry and Vision Science \|language=en \|volume=74 \|issue=8 \|pages=668–675 \|doi=10.1097/00006324-199708000-00029 \|issn=1040-5488}}</ref>		An axis near 90 degrees is sometimes called "with the rule" and near 180 degrees "against the rule". "against the rule" is more common in young children, while "with the rule" is more common after starting school,<ref>{{Cite journal \|last=Dobson \|first=V. \|last2=Fulton \|first2=A. B. \|last3=Sebris \|first3=S. L. \|date=1984-01-01 \|title=Cycloplegic refractions of infants and young children: the axis of astigmatism. \|url=https://iovs.arvojournals.org/article.aspx?articleid=2159731 \|journal=Investigative Ophthalmology & Visual Science \|language=en \|volume=25 \|issue=1 \|pages=83–87 \|issn=1552-5783}}</ref> and "against the rule" returns after the working years.<ref>{{Cite journal \|last=Kanellopoulos \|first=Anastasios John \|last2=Asimellis \|first2=George \|date=2015-8 \|title=Distribution and Repeatability of Corneal Astigmatism Measurements (Magnitude and Axis) Evaluated With Color Light Emitting Diode Reflection Topography \|url=https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4500657/ \|journal=Cornea \|volume=34 \|issue=8 \|pages=937–944 \|doi=10.1097/ICO.0000000000000476 \|issn=0277-3740 \|pmc=4500657 \|pmid=26057324}}</ref> It is commonly believed that the axis between your eyes is likely to have some symmetry or be 90 degrees off, but this is not true.<ref>{{Cite journal \|last=Mckendrick \|first=Allison M. \|last2=Brennan \|first2=Noel A. \|date=1997-08 \|title=The Axis of Astigmatism in Right and Left Eye Pairs: \|url=http://journals.lww.com/00006324-199708000-00029 \|journal=Optometry and Vision Science \|language=en \|volume=74 \|issue=8 \|pages=668–675 \|doi=10.1097/00006324-199708000-00029 \|issn=1040-5488}}</ref>

	The axis of astigmatism can be measured with a [[stenopaeic slit]] or [[JCC lens]] but the use of these tools is complex and easily misunderstood, it's usually best to get your axis from your most recent [[prescription]].		The axis of astigmatism can be measured with a [[stenopaeic slit]] or [[JCC lens]] but the use of these tools is complex and easily misunderstood, it's usually best to get your axis from your most recent [[prescription]].

			==Reducing==
			{{nutshell\|title=This section\|Never change the axis value when reducing your prescription.}}
			When reducing [[cylinder]] value, you should never change the axis value if it has been consistent for some time. The axis only refers to the ''orientation'' in which the cylinder is affecting your eyes, and any reduction of cylinder will happen on this orientation.

	==References==		==References==

AznDudeIsOn at 14:54, 4 September 2020

2020-09-04T14:54:49Z

← Older revision		Revision as of 14:54, 4 September 2020
Line 1:		Line 1:
	'''Axis''' is the orientation of the [[cylinder]] portion of your lens, used to compensate for [[astigmatism]]. You don't have an axis value if you don't have [[astigmatism]]. From the lens wearer's perspective, 0 degrees of axis is horizontal, and increasing values move clockwise around the eye. The axis of cylinder is symmetrical, so it only goes from 0 to 180 degrees. The convention ~~seems to be~~ that horizontal is described as 180 rather than as 0.		'''Axis''' is the orientation of the [[cylinder]] portion of your lens, used to compensate for [[astigmatism]]. You don't have an axis value if you don't have [[astigmatism]]. From the lens wearer's perspective, 0 degrees of axis is horizontal, and increasing values move clockwise around the eye. The axis of cylinder is symmetrical, so it only goes from 0 to 180 degrees. The convention is that the horizontal is described as 180 rather than as 0.

	An axis near 90 degrees is sometimes called "with the rule" and near 180 degrees "against the rule". "against the rule" is more common in young children, while "with the rule" is more common after starting school,<ref>{{Cite journal \|last=Dobson \|first=V. \|last2=Fulton \|first2=A. B. \|last3=Sebris \|first3=S. L. \|date=1984-01-01 \|title=Cycloplegic refractions of infants and young children: the axis of astigmatism. \|url=https://iovs.arvojournals.org/article.aspx?articleid=2159731 \|journal=Investigative Ophthalmology & Visual Science \|language=en \|volume=25 \|issue=1 \|pages=83–87 \|issn=1552-5783}}</ref> and "against the rule" returns after the working years.<ref>{{Cite journal \|last=Kanellopoulos \|first=Anastasios John \|last2=Asimellis \|first2=George \|date=2015-8 \|title=Distribution and Repeatability of Corneal Astigmatism Measurements (Magnitude and Axis) Evaluated With Color Light Emitting Diode Reflection Topography \|url=https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4500657/ \|journal=Cornea \|volume=34 \|issue=8 \|pages=937–944 \|doi=10.1097/ICO.0000000000000476 \|issn=0277-3740 \|pmc=4500657 \|pmid=26057324}}</ref> It is commonly believed that the axis between your eyes is likely to have some symmetry or be 90 degrees off, but this is not true.<ref>{{Cite journal \|last=Mckendrick \|first=Allison M. \|last2=Brennan \|first2=Noel A. \|date=1997-08 \|title=The Axis of Astigmatism in Right and Left Eye Pairs: \|url=http://journals.lww.com/00006324-199708000-00029 \|journal=Optometry and Vision Science \|language=en \|volume=74 \|issue=8 \|pages=668–675 \|doi=10.1097/00006324-199708000-00029 \|issn=1040-5488}}</ref>		An axis near 90 degrees is sometimes called "with the rule" and near 180 degrees "against the rule". "against the rule" is more common in young children, while "with the rule" is more common after starting school,<ref>{{Cite journal \|last=Dobson \|first=V. \|last2=Fulton \|first2=A. B. \|last3=Sebris \|first3=S. L. \|date=1984-01-01 \|title=Cycloplegic refractions of infants and young children: the axis of astigmatism. \|url=https://iovs.arvojournals.org/article.aspx?articleid=2159731 \|journal=Investigative Ophthalmology & Visual Science \|language=en \|volume=25 \|issue=1 \|pages=83–87 \|issn=1552-5783}}</ref> and "against the rule" returns after the working years.<ref>{{Cite journal \|last=Kanellopoulos \|first=Anastasios John \|last2=Asimellis \|first2=George \|date=2015-8 \|title=Distribution and Repeatability of Corneal Astigmatism Measurements (Magnitude and Axis) Evaluated With Color Light Emitting Diode Reflection Topography \|url=https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4500657/ \|journal=Cornea \|volume=34 \|issue=8 \|pages=937–944 \|doi=10.1097/ICO.0000000000000476 \|issn=0277-3740 \|pmc=4500657 \|pmid=26057324}}</ref> It is commonly believed that the axis between your eyes is likely to have some symmetry or be 90 degrees off, but this is not true.<ref>{{Cite journal \|last=Mckendrick \|first=Allison M. \|last2=Brennan \|first2=Noel A. \|date=1997-08 \|title=The Axis of Astigmatism in Right and Left Eye Pairs: \|url=http://journals.lww.com/00006324-199708000-00029 \|journal=Optometry and Vision Science \|language=en \|volume=74 \|issue=8 \|pages=668–675 \|doi=10.1097/00006324-199708000-00029 \|issn=1040-5488}}</ref>

Divenal: mention that they use 180 rather than 0 for some reason

2020-06-26T11:38:43Z

mention that they use 180 rather than 0 for some reason

← Older revision		Revision as of 11:38, 26 June 2020
Line 1:		Line 1:
	'''Axis''' is the orientation of the [[cylinder]] portion of your lens, used to compensate for [[astigmatism]]. You don't have an axis value if you don't have [[astigmatism]]. From the lens wearer's perspective, 0 degrees of axis is horizontal, and increasing values move clockwise around the eye. The axis of cylinder is symmetrical, so it only goes from 0 to 180 degrees.		'''Axis''' is the orientation of the [[cylinder]] portion of your lens, used to compensate for [[astigmatism]]. You don't have an axis value if you don't have [[astigmatism]]. From the lens wearer's perspective, 0 degrees of axis is horizontal, and increasing values move clockwise around the eye. The axis of cylinder is symmetrical, so it only goes from 0 to 180 degrees. The convention seems to be that horizontal is described as 180 rather than as 0.

	An axis near 90 degrees is sometimes called "with the rule" and near 180 degrees "against the rule". "against the rule" is more common in young children, while "with the rule" is more common after starting school,<ref>{{Cite journal \|last=Dobson \|first=V. \|last2=Fulton \|first2=A. B. \|last3=Sebris \|first3=S. L. \|date=1984-01-01 \|title=Cycloplegic refractions of infants and young children: the axis of astigmatism. \|url=https://iovs.arvojournals.org/article.aspx?articleid=2159731 \|journal=Investigative Ophthalmology & Visual Science \|language=en \|volume=25 \|issue=1 \|pages=83–87 \|issn=1552-5783}}</ref> and "against the rule" returns after the working years.<ref>{{Cite journal \|last=Kanellopoulos \|first=Anastasios John \|last2=Asimellis \|first2=George \|date=2015-8 \|title=Distribution and Repeatability of Corneal Astigmatism Measurements (Magnitude and Axis) Evaluated With Color Light Emitting Diode Reflection Topography \|url=https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4500657/ \|journal=Cornea \|volume=34 \|issue=8 \|pages=937–944 \|doi=10.1097/ICO.0000000000000476 \|issn=0277-3740 \|pmc=4500657 \|pmid=26057324}}</ref> It is commonly believed that the axis between your eyes is likely to have some symmetry or be 90 degrees off, but this is not true.<ref>{{Cite journal \|last=Mckendrick \|first=Allison M. \|last2=Brennan \|first2=Noel A. \|date=1997-08 \|title=The Axis of Astigmatism in Right and Left Eye Pairs: \|url=http://journals.lww.com/00006324-199708000-00029 \|journal=Optometry and Vision Science \|language=en \|volume=74 \|issue=8 \|pages=668–675 \|doi=10.1097/00006324-199708000-00029 \|issn=1040-5488}}</ref>		An axis near 90 degrees is sometimes called "with the rule" and near 180 degrees "against the rule". "against the rule" is more common in young children, while "with the rule" is more common after starting school,<ref>{{Cite journal \|last=Dobson \|first=V. \|last2=Fulton \|first2=A. B. \|last3=Sebris \|first3=S. L. \|date=1984-01-01 \|title=Cycloplegic refractions of infants and young children: the axis of astigmatism. \|url=https://iovs.arvojournals.org/article.aspx?articleid=2159731 \|journal=Investigative Ophthalmology & Visual Science \|language=en \|volume=25 \|issue=1 \|pages=83–87 \|issn=1552-5783}}</ref> and "against the rule" returns after the working years.<ref>{{Cite journal \|last=Kanellopoulos \|first=Anastasios John \|last2=Asimellis \|first2=George \|date=2015-8 \|title=Distribution and Repeatability of Corneal Astigmatism Measurements (Magnitude and Axis) Evaluated With Color Light Emitting Diode Reflection Topography \|url=https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4500657/ \|journal=Cornea \|volume=34 \|issue=8 \|pages=937–944 \|doi=10.1097/ICO.0000000000000476 \|issn=0277-3740 \|pmc=4500657 \|pmid=26057324}}</ref> It is commonly believed that the axis between your eyes is likely to have some symmetry or be 90 degrees off, but this is not true.<ref>{{Cite journal \|last=Mckendrick \|first=Allison M. \|last2=Brennan \|first2=Noel A. \|date=1997-08 \|title=The Axis of Astigmatism in Right and Left Eye Pairs: \|url=http://journals.lww.com/00006324-199708000-00029 \|journal=Optometry and Vision Science \|language=en \|volume=74 \|issue=8 \|pages=668–675 \|doi=10.1097/00006324-199708000-00029 \|issn=1040-5488}}</ref>

Dlskidmore: Reference edited with ProveIt

2020-06-25T16:59:36Z

Reference edited with ProveIt

← Older revision		Revision as of 16:59, 25 June 2020
Line 1:		Line 1:
	'''Axis''' is the orientation of the [[cylinder]] portion of your lens, used to compensate for [[astigmatism]]. You don't have an axis value if you don't have [[astigmatism]]. From the lens wearer's perspective, 0 degrees of axis is horizontal, and increasing values move clockwise around the eye. The axis of cylinder is symmetrical, so it only goes from 0 to 180 degrees.		'''Axis''' is the orientation of the [[cylinder]] portion of your lens, used to compensate for [[astigmatism]]. You don't have an axis value if you don't have [[astigmatism]]. From the lens wearer's perspective, 0 degrees of axis is horizontal, and increasing values move clockwise around the eye. The axis of cylinder is symmetrical, so it only goes from 0 to 180 degrees.

	An axis near 90 degrees is sometimes called "with the rule" and near 180 degrees "against the rule". "against the rule" is more common in young children, while "with the rule" is more common after starting school.<ref>{{Cite journal \|last=Dobson \|first=V. \|last2=Fulton \|first2=A. B. \|last3=Sebris \|first3=S. L. \|date=1984-01-01 \|title=Cycloplegic refractions of infants and young children: the axis of astigmatism. \|url=https://iovs.arvojournals.org/article.aspx?articleid=2159731 \|journal=Investigative Ophthalmology & Visual Science \|language=en \|volume=25 \|issue=1 \|pages=83–87 \|issn=1552-5783}}</ref>		An axis near 90 degrees is sometimes called "with the rule" and near 180 degrees "against the rule". "against the rule" is more common in young children, while "with the rule" is more common after starting school,<ref>{{Cite journal \|last=Dobson \|first=V. \|last2=Fulton \|first2=A. B. \|last3=Sebris \|first3=S. L. \|date=1984-01-01 \|title=Cycloplegic refractions of infants and young children: the axis of astigmatism. \|url=https://iovs.arvojournals.org/article.aspx?articleid=2159731 \|journal=Investigative Ophthalmology & Visual Science \|language=en \|volume=25 \|issue=1 \|pages=83–87 \|issn=1552-5783}}</ref> and "against the rule" returns after the working years.<ref>{{Cite journal \|last=Kanellopoulos \|first=Anastasios John \|last2=Asimellis \|first2=George \|date=2015-8 \|title=Distribution and Repeatability of Corneal Astigmatism Measurements (Magnitude and Axis) Evaluated With Color Light Emitting Diode Reflection Topography \|url=https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4500657/ \|journal=Cornea \|volume=34 \|issue=8 \|pages=937–944 \|doi=10.1097/ICO.0000000000000476 \|issn=0277-3740 \|pmc=4500657 \|pmid=26057324}}</ref> It is commonly believed that the axis between your eyes is likely to have some symmetry or be 90 degrees off, but this is not true.<ref>{{Cite journal \|last=Mckendrick \|first=Allison M. \|last2=Brennan \|first2=Noel A. \|date=1997-08 \|title=The Axis of Astigmatism in Right and Left Eye Pairs: \|url=http://journals.lww.com/00006324-199708000-00029 \|journal=Optometry and Vision Science \|language=en \|volume=74 \|issue=8 \|pages=668–675 \|doi=10.1097/00006324-199708000-00029 \|issn=1040-5488}}</ref>

	The axis of astigmatism can be measured with a [[stenopaeic slit]] or [[JCC lens]] but the use of these tools is complex and easily misunderstood, it's usually best to get your axis from your most recent [[prescription]].		The axis of astigmatism can be measured with a [[stenopaeic slit]] or [[JCC lens]] but the use of these tools is complex and easily misunderstood, it's usually best to get your axis from your most recent [[prescription]].

Dlskidmore: oops, backwards on commonality

2020-06-25T16:35:08Z

oops, backwards on commonality

← Older revision		Revision as of 16:35, 25 June 2020
Line 1:		Line 1:
	'''Axis''' is the orientation of the [[cylinder]] portion of your lens, used to compensate for [[astigmatism]]. You don't have an axis value if you don't have [[astigmatism]]. From the lens wearer's perspective, 0 degrees of axis is horizontal, and increasing values move clockwise around the eye. The axis of cylinder is symmetrical, so it only goes from 0 to 180 degrees.		'''Axis''' is the orientation of the [[cylinder]] portion of your lens, used to compensate for [[astigmatism]]. You don't have an axis value if you don't have [[astigmatism]]. From the lens wearer's perspective, 0 degrees of axis is horizontal, and increasing values move clockwise around the eye. The axis of cylinder is symmetrical, so it only goes from 0 to 180 degrees.

	An axis near 90 degrees is sometimes called "with the rule" and near 180 degrees "against the rule". "~~With~~ the rule" is more common in young children, while "~~against~~ the rule" is more common after starting school.<ref>{{Cite journal \|last=Dobson \|first=V. \|last2=Fulton \|first2=A. B. \|last3=Sebris \|first3=S. L. \|date=1984-01-01 \|title=Cycloplegic refractions of infants and young children: the axis of astigmatism. \|url=https://iovs.arvojournals.org/article.aspx?articleid=2159731 \|journal=Investigative Ophthalmology & Visual Science \|language=en \|volume=25 \|issue=1 \|pages=83–87 \|issn=1552-5783}}</ref>		An axis near 90 degrees is sometimes called "with the rule" and near 180 degrees "against the rule". "against the rule" is more common in young children, while "with the rule" is more common after starting school.<ref>{{Cite journal \|last=Dobson \|first=V. \|last2=Fulton \|first2=A. B. \|last3=Sebris \|first3=S. L. \|date=1984-01-01 \|title=Cycloplegic refractions of infants and young children: the axis of astigmatism. \|url=https://iovs.arvojournals.org/article.aspx?articleid=2159731 \|journal=Investigative Ophthalmology & Visual Science \|language=en \|volume=25 \|issue=1 \|pages=83–87 \|issn=1552-5783}}</ref>

	The axis of astigmatism can be measured with a [[stenopaeic slit]] or [[JCC lens]] but the use of these tools is complex and easily misunderstood, it's usually best to get your axis from your most recent [[prescription]].		The axis of astigmatism can be measured with a [[stenopaeic slit]] or [[JCC lens]] but the use of these tools is complex and easily misunderstood, it's usually best to get your axis from your most recent [[prescription]].

Dlskidmore: with/against the rule

2020-06-25T16:33:36Z

with/against the rule

← Older revision		Revision as of 16:33, 25 June 2020
Line 1:		Line 1:
	'''Axis''' is the orientation of the [[cylinder]] portion of your lens, used to compensate for [[astigmatism]]. You don't have an axis value if you don't have [[astigmatism]]. From the lens wearer's perspective, 0 degrees of axis is horizontal, and increasing values move clockwise around the eye. The axis of cylinder is symmetrical, so it only goes from 0 to 180 degrees.		'''Axis''' is the orientation of the [[cylinder]] portion of your lens, used to compensate for [[astigmatism]]. You don't have an axis value if you don't have [[astigmatism]]. From the lens wearer's perspective, 0 degrees of axis is horizontal, and increasing values move clockwise around the eye. The axis of cylinder is symmetrical, so it only goes from 0 to 180 degrees.

			An axis near 90 degrees is sometimes called "with the rule" and near 180 degrees "against the rule". "With the rule" is more common in young children, while "against the rule" is more common after starting school.<ref>{{Cite journal \|last=Dobson \|first=V. \|last2=Fulton \|first2=A. B. \|last3=Sebris \|first3=S. L. \|date=1984-01-01 \|title=Cycloplegic refractions of infants and young children: the axis of astigmatism. \|url=https://iovs.arvojournals.org/article.aspx?articleid=2159731 \|journal=Investigative Ophthalmology & Visual Science \|language=en \|volume=25 \|issue=1 \|pages=83–87 \|issn=1552-5783}}</ref>

	The axis of astigmatism can be measured with a [[stenopaeic slit]] or [[JCC lens]] but the use of these tools is complex and easily misunderstood, it's usually best to get your axis from your most recent [[prescription]].		The axis of astigmatism can be measured with a [[stenopaeic slit]] or [[JCC lens]] but the use of these tools is complex and easily misunderstood, it's usually best to get your axis from your most recent [[prescription]].

Hannie at 14:18, 20 June 2020

2020-06-20T14:18:31Z

← Older revision		Revision as of 14:18, 20 June 2020
Line 1:		Line 1:
	'''Axis''' is the orientation of the [[cylinder]] portion of your lens, used to compensate for [[astigmatism]]. You don't have an axis value if you don't have [[astigmatism]]. From the lens wearer's perspective, 0 degrees of axis is horizontal, and increasing values move clockwise around the eye. The axis of cylinder is symmetrical, so it only goes from 0 to 180 degrees.		'''Axis''' is the orientation of the [[cylinder]] portion of your lens, used to compensate for [[astigmatism]]. You don't have an axis value if you don't have [[astigmatism]]. From the lens wearer's perspective, 0 degrees of axis is horizontal, and increasing values move clockwise around the eye. The axis of cylinder is symmetrical, so it only goes from 0 to 180 degrees.

	~~Axis~~ of astigmatism can be measured with a [[stenopaeic slit]] or [[JCC lens]] but the use of these tools is complex and easily misunderstood, it's usually best to get your axis ~~off of~~ your most recent [[prescription]].		The axis of astigmatism can be measured with a [[stenopaeic slit]] or [[JCC lens]] but the use of these tools is complex and easily misunderstood, it's usually best to get your axis from your most recent [[prescription]].

	==References==		==References==

Viceroy Sam: /* top */bolding

2020-06-03T22:46:49Z

top: bolding

← Older revision		Revision as of 22:46, 3 June 2020
Line 1:		Line 1:
	Axis is the orientation of the [[cylinder]] portion of your lens, used to compensate for [[astigmatism]]. You don't have an axis value if you don't have [[astigmatism]]. From the lens wearer's perspective, 0 degrees of axis is horizontal, and increasing values move clockwise around the eye. The axis of cylinder is symmetrical, so it only goes from 0 to 180 degrees.		'''Axis''' is the orientation of the [[cylinder]] portion of your lens, used to compensate for [[astigmatism]]. You don't have an axis value if you don't have [[astigmatism]]. From the lens wearer's perspective, 0 degrees of axis is horizontal, and increasing values move clockwise around the eye. The axis of cylinder is symmetrical, so it only goes from 0 to 180 degrees.

	Axis of astigmatism can be measured with a [[stenopaeic slit]] or [[JCC lens]] but the use of these tools is complex and easily misunderstood, it's usually best to get your axis off of your most recent [[prescription]].		Axis of astigmatism can be measured with a [[stenopaeic slit]] or [[JCC lens]] but the use of these tools is complex and easily misunderstood, it's usually best to get your axis off of your most recent [[prescription]].

Dlskidmore: nuking "prescription" where that is not what is meant

2020-05-28T19:46:24Z

nuking "prescription" where that is not what is meant

← Older revision		Revision as of 19:46, 28 May 2020
Line 1:		Line 1:
	Axis is the orientation of the [[cylinder]] portion of your lens ~~[[prescription]]~~, used to compensate for [[astigmatism]]. You don't have an axis value if you don't have [[astigmatism]]. From the lens wearer's perspective, 0 degrees of axis is horizontal, and increasing values move clockwise around the eye. The axis of cylinder is symmetrical, so it only goes from 0 to 180 degrees.		Axis is the orientation of the [[cylinder]] portion of your lens, used to compensate for [[astigmatism]]. You don't have an axis value if you don't have [[astigmatism]]. From the lens wearer's perspective, 0 degrees of axis is horizontal, and increasing values move clockwise around the eye. The axis of cylinder is symmetrical, so it only goes from 0 to 180 degrees.

	Axis of astigmatism can be measured with a [[stenopaeic slit]] or [[JCC lens]] but the use of these tools is complex and easily misunderstood, it's usually best to get your axis off of your most recent prescription.		Axis of astigmatism can be measured with a [[stenopaeic slit]] or [[JCC lens]] but the use of these tools is complex and easily misunderstood, it's usually best to get your axis off of your most recent [[prescription]].

	==References==		==References==

NottNott: Text replacement - "Category:Articles" to "==References== {{reflist}} Category:Articles"

2020-05-24T23:52:26Z

Text replacement - "Category:Articles" to "==References== {{reflist}} Category:Articles"

← Older revision		Revision as of 23:52, 24 May 2020
Line 2:		Line 2:

	Axis of astigmatism can be measured with a [[stenopaeic slit]] or [[JCC lens]] but the use of these tools is complex and easily misunderstood, it's usually best to get your axis off of your most recent prescription.		Axis of astigmatism can be measured with a [[stenopaeic slit]] or [[JCC lens]] but the use of these tools is complex and easily misunderstood, it's usually best to get your axis off of your most recent prescription.

			==References==
			{{reflist}}

	[[Category:Articles]]		[[Category:Articles]]