Guide:Reducing differentials - Revision history

Angel: /* See also */

2022-02-11T22:23:00Z

Angel: /* Simple way with math */

2022-02-11T17:23:59Z

Simple way with math

← Older revision		Revision as of 17:23, 11 February 2022
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	===Simple way===		===Simple way===
	The EndMyopia process will probably involve a lot of trial and error. Bearing this in mind, Jake recommends you reduce from your glasses prescription by about '''1.25 diopters'''.<ref name=ChooseReduction>{{cite jake\|https://endmyopia.org/choose-reduced-glasses-prescription-differential-close-friendly-glasses/\|How To Choose A Reduced Glasses Prescription (Differential / Close-Up Friendly Glasses)}}</ref> This will depend on the distance you work from the screen, so reduce it by less if you work farther from the screen. Between 1-2 diopters is a good range - anything more than that and you'll probably want to double check it's a good idea.		The EndMyopia process will probably involve a lot of trial and error. Bearing this in mind, Jake recommends you reduce from your glasses prescription by about '''1.25 diopters'''.<ref name=ChooseReduction>{{cite jake\|https://endmyopia.org/choose-reduced-glasses-prescription-differential-close-friendly-glasses/\|How To Choose A Reduced Glasses Prescription (Differential / Close-Up Friendly Glasses)}}</ref> This will depend on the distance you work from the screen, so reduce it by less if you work farther from the screen. Between 1-2 diopters is a good range - anything more than that and you'll probably want to double check it's a good idea.
	==Simple way with math==		===Simple way with math===

	1. Measure the distance to your monitor (in centimeters).		1. Measure the distance to your monitor (in centimeters).

Angel: /* First differentials */

2022-02-11T17:23:40Z

First differentials

← Older revision		Revision as of 17:23, 11 February 2022
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	===Simple way===		===Simple way===
	The EndMyopia process will probably involve a lot of trial and error. Bearing this in mind, Jake recommends you reduce from your glasses prescription by about '''1.25 diopters'''.<ref name=ChooseReduction>{{cite jake\|https://endmyopia.org/choose-reduced-glasses-prescription-differential-close-friendly-glasses/\|How To Choose A Reduced Glasses Prescription (Differential / Close-Up Friendly Glasses)}}</ref> This will depend on the distance you work from the screen, so reduce it by less if you work farther from the screen. Between 1-2 diopters is a good range - anything more than that and you'll probably want to double check it's a good idea.		The EndMyopia process will probably involve a lot of trial and error. Bearing this in mind, Jake recommends you reduce from your glasses prescription by about '''1.25 diopters'''.<ref name=ChooseReduction>{{cite jake\|https://endmyopia.org/choose-reduced-glasses-prescription-differential-close-friendly-glasses/\|How To Choose A Reduced Glasses Prescription (Differential / Close-Up Friendly Glasses)}}</ref> This will depend on the distance you work from the screen, so reduce it by less if you work farther from the screen. Between 1-2 diopters is a good range - anything more than that and you'll probably want to double check it's a good idea.
			==Simple way with math==

			1. Measure the distance to your monitor (in centimeters).

			2. Convert that number to diopters.

			3. Subtract the number you just got from your full prescription.
	===Complicated way with math===		===Complicated way with math===
	The base point is an [[emmetropic eye]] with 20/20 vision.		The base point is an [[emmetropic eye]] with 20/20 vision.

Angel: /* See also */

2022-02-11T17:15:59Z

Angel: /* Complicated way with math */ https://wiki.endmyopia.org/wiki/Optics_related_math#Calculating_correction

2022-01-28T08:15:02Z

Complicated way with math: https://wiki.endmyopia.org/wiki/Optics_related_math#Calculating_correction

← Older revision		Revision as of 08:15, 28 January 2022
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	Then, take the difference and subtract it from your full strength prescription glasses. ''Voila!'' you have a differential prescription.		Then, take the difference and subtract it from your full strength prescription glasses. ''Voila!'' you have a differential prescription.


			<div>'''More explanation at [https://wiki.endmyopia.org/wiki/Optics_related_math#Calculating_correction Optics-Related Math > Calculating Correction].'''</div>

	===Example===		===Example===

Angel: /* Plus */

2022-01-24T16:19:29Z

Plus

← Older revision		Revision as of 16:19, 24 January 2022
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	=== Plus ===		=== Plus ===
	If you have [[low myopia]] and get a positive number, read the caveats about [[plus lenses]].		If you have [[low myopia]] and get a positive number, don't wear any glasses for close-up work, and read the caveats about [[plus lenses]].

	==References==		==References==

User: /* First differentials */

2022-01-20T19:57:40Z

First differentials

← Older revision		Revision as of 19:57, 20 January 2022
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	So, you should use OD/OS -2.5/-1.5, if 57cm is the main distance you perform [[close-up activity]]. Simple!		So, you should use OD/OS -2.5/-1.5, if 57cm is the main distance you perform [[close-up activity]]. Simple!

	If you get a positive number, read the caveats about [[plus lenses]].		=== Plus ===
			If you have [[low myopia]] and get a positive number, read the caveats about [[plus lenses]].

	==References==		==References==

User: /* Reducing */

2022-01-20T19:51:12Z

Reducing

← Older revision		Revision as of 19:51, 20 January 2022
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	Stagger reductions between differentials and normalized, unless equalizing.		Stagger reductions between differentials and normalized, unless equalizing.

	Following the principles of [[zero-diopter reset]], if you already wore the previous differentials, do not wear the new differentials until the next day.		Following the principles of [[zero diopter reset]], if you already wore the previous differentials, do not wear the new differentials until the next day.

	==First differentials==		==First differentials==

User at 19:50, 20 January 2022

2022-01-20T19:50:59Z

← Older revision		Revision as of 19:50, 20 January 2022
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	If you don't use differentials at all, or are overcorrected for a given distance, your progress will be stunted. Accommodation of the eye to [[hyperopic defocus]] is the main reason [[axial elongation]] happens in the first place.		If you don't use differentials at all, or are overcorrected for a given distance, your progress will be stunted. Accommodation of the eye to [[hyperopic defocus]] is the main reason [[axial elongation]] happens in the first place.
	==Simple way==
			==Reducing==
			Stagger reductions between differentials and normalized, unless equalizing.

			Following the principles of [[zero-diopter reset]], if you already wore the previous differentials, do not wear the new differentials until the next day.

			==First differentials==
			===Simple way===
	The EndMyopia process will probably involve a lot of trial and error. Bearing this in mind, Jake recommends you reduce from your glasses prescription by about '''1.25 diopters'''.<ref name=ChooseReduction>{{cite jake\|https://endmyopia.org/choose-reduced-glasses-prescription-differential-close-friendly-glasses/\|How To Choose A Reduced Glasses Prescription (Differential / Close-Up Friendly Glasses)}}</ref> This will depend on the distance you work from the screen, so reduce it by less if you work farther from the screen. Between 1-2 diopters is a good range - anything more than that and you'll probably want to double check it's a good idea.		The EndMyopia process will probably involve a lot of trial and error. Bearing this in mind, Jake recommends you reduce from your glasses prescription by about '''1.25 diopters'''.<ref name=ChooseReduction>{{cite jake\|https://endmyopia.org/choose-reduced-glasses-prescription-differential-close-friendly-glasses/\|How To Choose A Reduced Glasses Prescription (Differential / Close-Up Friendly Glasses)}}</ref> This will depend on the distance you work from the screen, so reduce it by less if you work farther from the screen. Between 1-2 diopters is a good range - anything more than that and you'll probably want to double check it's a good idea.

	==Complicated way with math==		===Complicated way with math===
	The base point is an [[emmetropic eye]] with 20/20 vision.		The base point is an [[emmetropic eye]] with 20/20 vision.

User: /* See also */

2022-01-20T19:49:10Z

← Older revision		Revision as of 22:23, 11 February 2022
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	* [[Guide:How to measure your eyesight \| How to measure your eyesight]]		* [[Guide:How to measure your eyesight \| How to measure your eyesight]]
	* [[reduction \| Reduction]]		* [[reduction \| Reduction]]

			* [[Differentials]]
	* [[Guide:Reducing lens complexity \| Reducing lens complexity]]		* [[Guide:Reducing lens complexity \| Reducing lens complexity]]
	* [[Guide:Reducing normalized \| Reducing normalized]]		* [[Guide:Reducing normalized \| Reducing normalized]]

← Older revision		Revision as of 17:15, 11 February 2022
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	== See also ==		== See also ==
	* [[Guide:Reducing lens complexity]]		* [[Guide:How to measure your eyesight \| How to measure your eyesight]]
	* [[Guide:Reducing normalized]]		* [[reduction \| Reduction]]
	* [[Guide:~~How to measure your eyesight~~]]		* [[Guide:Reducing lens complexity \| Reducing lens complexity]]
			* [[Guide:Reducing normalized \| Reducing normalized]]
			* [[Guide:Not_reducing_too_quickly \| Take it slow]]

	[[Category:Guides]]		[[Category:Guides]]

← Older revision		Revision as of 19:49, 20 January 2022
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	== See also ==		== See also ==
	[[Guide:Reducing normalized]]		* [[Guide:Reducing lens complexity]]
			* [[Guide:Reducing normalized]]
			* [[Guide:How to measure your eyesight]]

	[[Category:Guides]]		[[Category:Guides]]