Astigmatism. The correction that is exceedingly rare in actual necessity. Yes, you probably didn’t actually have astigmatism the first time they gave you glasses with correction for it. Surprised? Incredulous? Not sure what to think?
Browse this section for science about astigmatism, how-to guides, and a whole lot of students who successfully reversed their lens-induced astigmatism. Odds are you won’t need this complex focal plane correction for long!
+0.50? -0.50? Rene’s Curious Astigmatism Correction Diagnosis
I hadn't planned on writing today, but a post by Rene in the forum warrants a quick look:cm measurements: RE: 21,0 cm LE: 19,0 cmSnellen 20/20: RE: -4,75 LE: -5,25 Astigmatism test: RE: All lines look nearly the same. LE: 0°/10° lines look bold and grey. 90° line looks thin and black.Eye examination, optic shop A: RE: -5,50 +0,50 85° LE: -6,00 +0,5 90°Eye examination, optic shop B: RE: -5.00 -0,50 160° LE: -6,00 – 0,50 11°These astigmatism corrections can’t be right. With my trial lens set I [...]
How To: Test If You Need Astigmatism Correction (for Normalized Prescriptions)
The question about astigmatism correction comes up a lot, and there is no definite answer that covers all cases. In this post we'll look at a simple DIY at-home test for astigmatism, and various considerations that may apply to your own prescriptions needs. (Note that you may also very like.ly be able to reduce your astigmatism by addressing the cylinder correction of your glasses or contact lenses - more on that later) Testing Astigmatism Without the proper tools to [...]
How To Choose a Differential Glasses Prescription If You Have High Astigmatism
There's a recent thread in the forum where I spent quite a bit of time answering some questions that tend to come up a lot. It's relevant for just about anyone starting out with healthier prescription management, and a good primer if you need some pointers. I really do need to get a good FAQ for this aspect. The blog format isn't entirely ideal to keep key topics from disappearing into the archives! Brandon asks in the forum: I just [...]
Magda: Astigmatism Cure
Magda writes about her astigmatism cure:Dear Alex,I am so excited to tell you --- I was prescribed by the glasses shop -3.50 and 4.25 recently. I persuaded him to reduce them to my old prescription of -2.75 and -3, but he also added a ton of astigmatism adjustments, 40 and 80. Three weeks later I just now purchased and tried on a pair of glasses with a straight focal plane, both measuring -2.50. My eyes relaxed and released in a way [...]
Reduce Astigmatism by 90% in 9 Months
It is busy times on the site. The Winter Installments just started, the new Free Web Course is available via e-mail, and I am planning to bring you much, much more content, via the blog. In fact, I am planning to post as many as six new articles per week, every week. I am getting your e-mail questions, requests, and comments. I am definitely hearing what you are asking for. More tangible, actionable, quick, simple reads, that will help [...]
Astigmatism: The High Fructose Corn Syrup of the Vision Industry
If you missed the previous installment, click here: How Astigmatism is Measured. So we discussed why it is rather difficult to correctly measure astigmatism in a meaningful way. We figured out that the astigmatism correction in your lenses is probably not representative of any real vision deficiency you might have. The problem of course, is that the first time you got an astigmatism correction, it was probably not necessary (or accurate). Since then though, your eyes acclimated to that correction. The [...]