Frequently Asked Questions/Myopia - Revision history

NottNott: /* Is myopia genetic/hereditary? */

2020-06-18T13:14:36Z

Is myopia genetic/hereditary?

← Older revision		Revision as of 13:14, 18 June 2020
Line 75:		Line 75:
	The Ministry of Healh in Singapore says: {{xt\|"The prevalence of myopia in Singapore is among the highest in the world, with 65 percent of our children being myopic by Primary 6, and 83 percent of young adults being myopic."}}/ <ref>https://www.moh.gov.sg/news-highlights/details/speech-by-dr-lam-pin-min-senior-minister-of-state-for-health-at-the-opening-of-the-singapore-national-eye-centre-s-myopia-centre-16-august-2019#:~:text=2.,of%20young%20adults%20being%20myopic</ref> How did their ancestors survive to lead to the current generation if myopia is generally so disadvantageous to an organism's survival?		The Ministry of Healh in Singapore says: {{xt\|"The prevalence of myopia in Singapore is among the highest in the world, with 65 percent of our children being myopic by Primary 6, and 83 percent of young adults being myopic."}}/ <ref>https://www.moh.gov.sg/news-highlights/details/speech-by-dr-lam-pin-min-senior-minister-of-state-for-health-at-the-opening-of-the-singapore-national-eye-centre-s-myopia-centre-16-august-2019#:~:text=2.,of%20young%20adults%20being%20myopic</ref> How did their ancestors survive to lead to the current generation if myopia is generally so disadvantageous to an organism's survival?
	{{clear}}		{{clear}}
			{{jake says\|No. And yes.

			Myopia has two primary causes (or stages). Ciliary (focusing muscle) spasm, also referred to as pseudo myopia, or near-induced transient myopia. It then becomes lens-induced myopia if you start wearing glasses.

			The degree to which your myopia will increase with the second (lens-induced) stage, depends on genetics to some degree.}}

	===Is infant myopia normal?===		===Is infant myopia normal?===

NottNott: /* Is myopia genetic/hereditary? */

2020-06-18T13:13:42Z

Is myopia genetic/hereditary?

← Older revision		Revision as of 13:13, 18 June 2020
Line 69:		Line 69:

	===Is myopia genetic/hereditary?===		===Is myopia genetic/hereditary?===
			{{also\|Frequently Asked Questions/Myopia/Quotes#Hereditary factors of myopia}}
	[[File:Double_D_Facts_about_Myopia.png\|350px\|right]]		[[File:Double_D_Facts_about_Myopia.png\|350px\|right]]
	No, in the majority of cases. The majority of myopia is [[lens-induced]] in the world. Question why [[Wikipedia:natural selection]] has failed so terribly it's resulted in eye defects in huge swathes of the population, two billion in the world.		No, in the majority of cases. The majority of myopia is [[lens-induced]] in the world. Question why [[Wikipedia:natural selection]] has failed so terribly it's resulted in eye defects in huge swathes of the population, two billion in the world.
Line 74:		Line 75:
	The Ministry of Healh in Singapore says: {{xt\|"The prevalence of myopia in Singapore is among the highest in the world, with 65 percent of our children being myopic by Primary 6, and 83 percent of young adults being myopic."}}/ <ref>https://www.moh.gov.sg/news-highlights/details/speech-by-dr-lam-pin-min-senior-minister-of-state-for-health-at-the-opening-of-the-singapore-national-eye-centre-s-myopia-centre-16-august-2019#:~:text=2.,of%20young%20adults%20being%20myopic</ref> How did their ancestors survive to lead to the current generation if myopia is generally so disadvantageous to an organism's survival?		The Ministry of Healh in Singapore says: {{xt\|"The prevalence of myopia in Singapore is among the highest in the world, with 65 percent of our children being myopic by Primary 6, and 83 percent of young adults being myopic."}}/ <ref>https://www.moh.gov.sg/news-highlights/details/speech-by-dr-lam-pin-min-senior-minister-of-state-for-health-at-the-opening-of-the-singapore-national-eye-centre-s-myopia-centre-16-august-2019#:~:text=2.,of%20young%20adults%20being%20myopic</ref> How did their ancestors survive to lead to the current generation if myopia is generally so disadvantageous to an organism's survival?
	{{clear}}		{{clear}}

	===Is infant myopia normal?===		===Is infant myopia normal?===
	{{also\|Frequently Asked Questions/Myopia/Quotes#Infant myopia}}		{{also\|Frequently Asked Questions/Myopia/Quotes#Infant myopia}}

NottNott: /* What is pseudomyopia? */

2020-06-18T13:10:48Z

What is pseudomyopia?

← Older revision		Revision as of 13:10, 18 June 2020
Line 46:		Line 46:

	''“'''Pseudomyopia''' refers to an intermittent and temporary shift in refraction of the eye towards myopia, in which the focusing of light in front of the retina is due to a transient spasm of the ciliary muscle causing an increase in the refractive power of the eye.”''}}		''“'''Pseudomyopia''' refers to an intermittent and temporary shift in refraction of the eye towards myopia, in which the focusing of light in front of the retina is due to a transient spasm of the ciliary muscle causing an increase in the refractive power of the eye.”''}}
			===Does computer work cause pseudomyopia?===
			{{also\|Frequently Asked Questions/Myopia/Quotes#Pseudomyopia}}
			{{jake says\|Maybe. Sort of.

			All myopia starts as “pseudo myopia”, also referred to as ciliary spasm myopia or NITM (near-induced transient myopia).

			This isn’t real myopia, in that it would just go away if you stopped the excessive close-up focus. A whole lot of computer work, every day, never stopping that strain, does cause pseudo myopia. This can show up to be anywhere from 1 to 1.5 diopters at an optometrist exam.

			Computer work alone (or reading books, or any other consistent close-up focus) doesn’t cause myopia higher than 1.5 diopters of optometrist diagnosed correction. It’s not until you begin to wear glasses, that real myopia happens (lens-induced, axial elongation myopia). }}

	==Why is my eyesight worse indoors or in low light?==		==Why is my eyesight worse indoors or in low light?==

NottNott: /* What is pseudomyopia? */

2020-06-18T13:06:12Z

What is pseudomyopia?

← Older revision		Revision as of 13:06, 18 June 2020
Line 45:		Line 45:
	From Wikipedia:		From Wikipedia:

	~~“Pseudomyopia~~ refers to an intermittent and temporary shift in refraction of the eye towards myopia, in which the focusing of light in front of the retina is due to a transient spasm of the ciliary muscle causing an increase in the refractive power of the eye.”}}		''“'''Pseudomyopia''' refers to an intermittent and temporary shift in refraction of the eye towards myopia, in which the focusing of light in front of the retina is due to a transient spasm of the ciliary muscle causing an increase in the refractive power of the eye.”''}}

	==Why is my eyesight worse indoors or in low light?==		==Why is my eyesight worse indoors or in low light?==

NottNott: /* What is pseudomyopia? */

2020-06-18T13:05:50Z

What is pseudomyopia?

@@ Line 35: / Line 35: @@
 ==What is pseudomyopia?==
 [[Pseudomyopia]] is where the [[ciliary muscle]] locks up due to prolonged periods of [[close up]], typically spent in front of a monitor. Pseudomyopia is typically the condition people have when they first go to the optometrist to get a pair of glasses. That pair of glasses goes onto cause [[lens-induced myopia]].
 ==Why is my eyesight worse indoors or in low light?==
 [https://endmyopia.org/why-is-my-eyesight-worse-in-low-light-indoors-dusk-night-time/ See this blog post]

NottNott: /* Do glasses make my eyes worse? */

2020-06-18T13:04:05Z

Do glasses make my eyes worse?

← Older revision		Revision as of 13:04, 18 June 2020
Line 57:		Line 57:
	Most children are born [[hyperopic]] or [[myopic]]. Over the first few years, their eyes grow to be approximately [[emmetropic]], with least variability at about 6 years of age.		Most children are born [[hyperopic]] or [[myopic]]. Over the first few years, their eyes grow to be approximately [[emmetropic]], with least variability at about 6 years of age.
	===Do glasses make my eyes worse?===		===Do glasses make my eyes worse?===
	{{also\|Frequently Asked Questions/Myopia/Quotes#Glasses progressing myopia via ~~hyperopic_defocus~~		{{also\|Frequently Asked Questions/Myopia/Quotes#Glasses progressing myopia via hyperopic defocus}}
	'''Yes''', when the glasses are for distance and you perform excessive periods of [[close-up activity]].		'''Yes''', when the glasses are for distance and you perform excessive periods of [[close-up activity]].

	===What is form deprivation myopia?===		===What is form deprivation myopia?===
	{{also\|Frequently Asked Questions/Myopia/Quotes#Form deprivation}}		{{also\|Frequently Asked Questions/Myopia/Quotes#Form deprivation}}

NottNott at 13:03, 18 June 2020

2020-06-18T13:03:47Z

← Older revision		Revision as of 13:03, 18 June 2020
Line 23:		Line 23:
	20/20 is a barn door. It’ll do, as far as determining a ballpark for your eyesight, and a means to figure out how much lens correction will give you the clearest possible vision. Consider this, the tool used by optometry, and it’s vaguest accuracy, before ‘blindly’ trusting the mainstream lens sales with your eyesight.}}		20/20 is a barn door. It’ll do, as far as determining a ballpark for your eyesight, and a means to figure out how much lens correction will give you the clearest possible vision. Consider this, the tool used by optometry, and it’s vaguest accuracy, before ‘blindly’ trusting the mainstream lens sales with your eyesight.}}
	==What is axial elongation?==		==What is axial elongation?==
			{{also\|Frequently Asked Questions/Myopia/Quotes#Axial elongation}}
	[[Axial elongation]] is the increase in length of the eyeball. It happens when you wear glasses and look at screens for extended periods of time. Specifically, it happens due to [[hyperopic defocus]] as a result of [[close work]] combined with [[glasses]] that are [[overprescribed]] for the [[focal distance]] in question.		[[Axial elongation]] is the increase in length of the eyeball. It happens when you wear glasses and look at screens for extended periods of time. Specifically, it happens due to [[hyperopic defocus]] as a result of [[close work]] combined with [[glasses]] that are [[overprescribed]] for the [[focal distance]] in question.
	{{jake says\|Axial elongation is the elongating of the eyeball. Speculation abounds as to the causes, though the most accepted is that axial elongation is just part of the whole story. Axial change, rather than axial elongation alone should be considered as a mechanism by which the eye compensates for focal plane error.}}		{{jake says\|Axial elongation is the elongating of the eyeball. Speculation abounds as to the causes, though the most accepted is that axial elongation is just part of the whole story. Axial change, rather than axial elongation alone should be considered as a mechanism by which the eye compensates for focal plane error.}}
Line 53:		Line 54:
	{{clear}}		{{clear}}
	===Is infant myopia normal?===		===Is infant myopia normal?===
			{{also\|Frequently Asked Questions/Myopia/Quotes#Infant myopia}}
	Most children are born [[hyperopic]] or [[myopic]]. Over the first few years, their eyes grow to be approximately [[emmetropic]], with least variability at about 6 years of age.		Most children are born [[hyperopic]] or [[myopic]]. Over the first few years, their eyes grow to be approximately [[emmetropic]], with least variability at about 6 years of age.
	===Do glasses make my eyes worse?===		===Do glasses make my eyes worse?===
			{{also\|Frequently Asked Questions/Myopia/Quotes#Glasses progressing myopia via hyperopic_defocus
	'''Yes''', when the glasses are for distance and you perform excessive periods of [[close-up activity]].		'''Yes''', when the glasses are for distance and you perform excessive periods of [[close-up activity]].
	===What is form deprivation myopia?===		===What is form deprivation myopia?===
			{{also\|Frequently Asked Questions/Myopia/Quotes#Form deprivation}}
	Search for 'form deprivation' in this study: https://www.sciencedirect.com/science/article/pii/S0896627304004933		Search for 'form deprivation' in this study: https://www.sciencedirect.com/science/article/pii/S0896627304004933

NottNott: /* Causes of myopia */

2020-06-18T12:50:16Z

Causes of myopia

← Older revision		Revision as of 12:50, 18 June 2020
Line 54:		Line 54:
	===Is infant myopia normal?===		===Is infant myopia normal?===
	Most children are born [[hyperopic]] or [[myopic]]. Over the first few years, their eyes grow to be approximately [[emmetropic]], with least variability at about 6 years of age.		Most children are born [[hyperopic]] or [[myopic]]. Over the first few years, their eyes grow to be approximately [[emmetropic]], with least variability at about 6 years of age.

	~~Study about infant myopia: https://www.sciencedirect.com/science/article/pii/S0896627304004933#BIB61~~
	===Do glasses make my eyes worse?===		===Do glasses make my eyes worse?===
	'''Yes''', when the glasses are for distance and you perform excessive periods of [[close-up activity]].		'''Yes''', when the glasses are for distance and you perform excessive periods of [[close-up activity]].
	===What is form deprivation myopia?===		===What is form deprivation myopia?===
	~~Study about~~ form deprivation ~~myopia~~: https://www.sciencedirect.com/science/article/pii/S0896627304004933		Search for 'form deprivation' in this study: https://www.sciencedirect.com/science/article/pii/S0896627304004933

	==Potential solutions to myopia==		==Potential solutions to myopia==
	===Does outdoor time reduce myopia?===		===Does outdoor time reduce myopia?===

NottNott: /* What is axial elongation? */

2020-06-18T12:48:49Z

What is axial elongation?

← Older revision		Revision as of 12:48, 18 June 2020
Line 24:		Line 24:
	==What is axial elongation?==		==What is axial elongation?==
	[[Axial elongation]] is the increase in length of the eyeball. It happens when you wear glasses and look at screens for extended periods of time. Specifically, it happens due to [[hyperopic defocus]] as a result of [[close work]] combined with [[glasses]] that are [[overprescribed]] for the [[focal distance]] in question.		[[Axial elongation]] is the increase in length of the eyeball. It happens when you wear glasses and look at screens for extended periods of time. Specifically, it happens due to [[hyperopic defocus]] as a result of [[close work]] combined with [[glasses]] that are [[overprescribed]] for the [[focal distance]] in question.
			{{jake says\|Axial elongation is the elongating of the eyeball. Speculation abounds as to the causes, though the most accepted is that axial elongation is just part of the whole story. Axial change, rather than axial elongation alone should be considered as a mechanism by which the eye compensates for focal plane error.}}

			[https://www.sciencedirect.com/science/article/pii/S0896627304004933 Homeostasis of Eye Growth and the Question of Myopia]
	===How do I tell if I see blurry because of axial elongation?===		===How do I tell if I see blurry because of axial elongation?===
	Blog post: [https://endmyopia.org/pro-topic-ciliary-spasm-blur-vs-axial-elongation-blur/ Pro Topic: Ciliary Spasm Blur Vs. Axial Elongation Blur]		Blog post: [https://endmyopia.org/pro-topic-ciliary-spasm-blur-vs-axial-elongation-blur/ Pro Topic: Ciliary Spasm Blur Vs. Axial Elongation Blur]

	==How do I calculate all the diopter & optics maths?==		==How do I calculate all the diopter & optics maths?==
	See [[optics related math]].		See [[optics related math]].

NottNott at 12:47, 18 June 2020

2020-06-18T12:47:30Z

← Older revision		Revision as of 12:47, 18 June 2020
Line 54:		Line 54:
	===Do glasses make my eyes worse?===		===Do glasses make my eyes worse?===
	'''Yes''', when the glasses are for distance and you perform excessive periods of [[close-up activity]].		'''Yes''', when the glasses are for distance and you perform excessive periods of [[close-up activity]].
			===What is form deprivation myopia?===
			Study about form deprivation myopia: https://www.sciencedirect.com/science/article/pii/S0896627304004933
	==Potential solutions to myopia==		==Potential solutions to myopia==
	===Does outdoor time reduce myopia?===		===Does outdoor time reduce myopia?===