Questions tagged [astigmatism]

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7
votes
1answer
976 views

What causes the cornea to change shape in astigmatism?

I was diagnosed with astigmatism last summer, I've never had any noticeable vision problems before (I'm 20 years old). The shift from fine to terrible happened quite fast. I've visited an eye doctor, ...
3
votes
1answer
5k views

Help reading an eyeglass prescription: What does "PL" or "PC" mean?

I'm trying to purchase glasses online but I cannot figure out what the Spherical value is for the left eye (OS).
2
votes
1answer
3k views

What effects would aspheric contact lenses have on eyes without astigmatism?

Aspheric lenses are used for treatment of astigmatism. I am curious what effects might happen if they were used by someone without an astigmatism. What effects would it have on visual acuity? ...
1
vote
0answers
33 views

Is it normal for it to take more than 3 weeks to get used to astigmatism correcting glasses?

Is it common or realistic in the optometry industry to suggest to someone that it may take 6 weeks to adjust to new glasses?
0
votes
0answers
15 views

Slanted view with one eye having astigmatism corrected

With the right eye having astigmatism corrected (Cyl increased from -0.5 to -1.25), the computer monitor looks like a trapezoid with the left edge shorter than the right edge. If the patient is ...