Difference between revisions of Differentials

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==First Differentials==
==First Differentials==
The first differentials are typically 1.25 - 1.5 D weaker than your [[measurement]] for full distance vision.  If you have -0.25 D of cylinder, you have the option of dropping that.  If you have -0.5 to -0.75 D of cylinder, you have the option of dropping that and having the sphere only 1 - 1.25 D weaker.
The first differentials are typically 1.25 - 1.5 D weaker than your [[measurement]] for [[full correction]].  If you have -0.25 D of cylinder, you have the option of dropping that.  If you have -0.5 to -0.75 D of cylinder, you have the option of dropping that and having the sphere only 1 - 1.25 D weaker.


See [[Lens#How to use Contacts with EM|How to use Contacts with EM]] if you wear contacts.
See [[Lens#How to use Contacts with EM|How to use Contacts with EM]] if you wear contacts.
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* [https://www.youtube.com/watch?v=7HM5oOAexww differentials: a video]
* [https://www.youtube.com/watch?v=7HM5oOAexww differentials: a video]
* [https://www.youtube.com/watch?v=EWJxPpSksag Q&A: Reading Books With Differentials - No Blur Horizon?]
* [https://www.youtube.com/watch?v=EWJxPpSksag Q&A: Reading Books With Differentials - No Blur Horizon?]
* [https://endmyopia.org/pro-topic-managing-your-maximum-diopter-gap/ Pro Topic: Managing Your Maximum Diopter Gap]


==References==
==References==