Difference between revisions of Night vision
Dlskidmore (talk | contribs) m (added another link) |
(Incorporate suggestions from forum regarding using previous normalized) |
||
| (7 intermediate revisions by 4 users not shown) | |||
| Line 1: | Line 1: | ||
Night | Night vision is your ability to see in poor lighting conditions. Your color vision isn't very good at detecting low light levels, as the light dims your [[visual cortex]] depends more and more on your black and white vision and ignores the color input. You have fewer black and white detectors than color detectors, so you have less [[visual acuity]] at the same [[refraction]]. You may need to wear [[Full correction]] instead of [[Normalized]] lenses in poor light. | ||
===Previous Normalized For Low Light Conditions=== | |||
Re: [https://community.endmyopia.org/t/break-plateaus-with-deload-week/19771 Forum: Break Plateaus with Deload Week?] and [https://community.endmyopia.org/t/break-plateaus-with-deload-week/19771/8 jakey's response] | |||
While EM recommends ideally using 2 glasses (differentials and normalized) for both simplicity and consistency reasons, a repeated recommendation is to use previous normalized when low light conditions are more straining for current normalized. The conditions vary based on individual strain and level of under-correction, but in the thread some ideas were given for how to use extra diopters in low light conditions: | |||
* Previous normalized is preferred for a boost in clarity. Others do find extra diopters helpful, but it's possible that need for additional diopter increments is a warning sign that excessive under-correction is happening. Even so in the latter case, use the diopters you need to operate safely in low light conditions. | |||
* Ideally without ratio changes. | |||
* Only in low light, only in short bursts. | |||
* 10 minutes of extra clarity, in an otherwise challenging condition where you’re most likely to have lost clarity. | |||
* It’s a noticeable increase, you get that dose you’re looking for of ‘reference acuity’. At the same time you’re minimizing the risk of sliding backwards if you were to use previous normalized in good lighting conditions and over longer periods. | |||
Ideally differentials do not need to be adjusted for low light conditions, since distance and lighting is both consistent or easily tweaked. | |||
===Vitamin A=== | |||
Vitamin A might help nighttime vision.<ref>[https://www.ebmconsult.com/articles/Vitamin-A-eye-vision-mechanism The Mechanism for Vitamin A Improvements in Night Vision]</ref> | |||
==See Also== | |||
* [https://endmyopia.org/why-vision-is-worse-at-night-and-on-cloudy-days-too/ Why Vision Is Worse At Night (and on cloudy days, too)] | |||
* [https://www.arizonaretinalspecialists.com/blog/7-ways-improve-night-vision/ 7 Ways to Improve Night Vision] (This is not Jake-specific advice) | |||
==References== | |||
{{Reflist}} | |||
[[Category:Articles]] | |||
Latest revision as of 06:37, 19 February 2023
Night vision is your ability to see in poor lighting conditions. Your color vision isn't very good at detecting low light levels, as the light dims your visual cortex depends more and more on your black and white vision and ignores the color input. You have fewer black and white detectors than color detectors, so you have less visual acuity at the same refraction. You may need to wear Full correction instead of Normalized lenses in poor light.
Previous Normalized For Low Light Conditions
Re: Forum: Break Plateaus with Deload Week? and jakey's response
While EM recommends ideally using 2 glasses (differentials and normalized) for both simplicity and consistency reasons, a repeated recommendation is to use previous normalized when low light conditions are more straining for current normalized. The conditions vary based on individual strain and level of under-correction, but in the thread some ideas were given for how to use extra diopters in low light conditions:
- Previous normalized is preferred for a boost in clarity. Others do find extra diopters helpful, but it's possible that need for additional diopter increments is a warning sign that excessive under-correction is happening. Even so in the latter case, use the diopters you need to operate safely in low light conditions.
- Ideally without ratio changes.
- Only in low light, only in short bursts.
- 10 minutes of extra clarity, in an otherwise challenging condition where you’re most likely to have lost clarity.
- It’s a noticeable increase, you get that dose you’re looking for of ‘reference acuity’. At the same time you’re minimizing the risk of sliding backwards if you were to use previous normalized in good lighting conditions and over longer periods.
Ideally differentials do not need to be adjusted for low light conditions, since distance and lighting is both consistent or easily tweaked.
Vitamin A
Vitamin A might help nighttime vision.[1]
See Also
- Why Vision Is Worse At Night (and on cloudy days, too)
- 7 Ways to Improve Night Vision (This is not Jake-specific advice)