Since astigmatism comes in a variety of forms and combinations I thought it could be useful to have a simple survey-like topic for members with astigmatism to share their experience in hopes of finding consistent factors that possibly let to it. I think it’ll be especially helpful for those of us who have non-lens induced astigmatism but in any case I think it’ll benefit everyone with some degree of astigmatism.
Various studies have been done on how certain eye scanning habits might lead to astigmatism, this is a popular one worth taking a look at: Visual Conditions of Simphony Musicians.pdf (3.2 MB)
A lot of information on this theory is provided in the forum guide on astigmatism as well:
So I’m wondering how much this applies to people here, what I think would help is sharing the astigmatism status, what sort of visual experience it gives you (ghosting, streaks, starbursts, smears, etc) and what eye movements and postural habits do you think you regularly have, there’s no need to be specific about what task you specifically do so sharing that information is of course completely optional.
As a basic example I’ll start:
Astigmatism Status: OD: 100° axis ???.d OS: 80° ???.d (I’ll update the diopter numbers when I obtain them)
Visual Experience: my ghost images are almost perfectly mirrored (bottom left and right of main image), right eye’s ghost image starts further than the left, they’re generally not noticeable except for during the night with high contrast details (e.g. neon lights, white on black text), lights far away look like starbursts and I’ve found that it causes some normal blur in general, left eye has a small but noticeable residual blur that appears in really close distances, I don’t know if this is caused by astigmatism or not yet but I’ll mention it for now.
I notice very minor distortions even in close up, but it’s quite subtle.
Eye scanning habits: I move my eyes up and down more than left and right, most of the time when I look left and right even if it’s easily achievable with some eye movement I habitually move my head more often it seems, I don’t have a consistent head tilt, at least not anymore, at some point my axes were both 80° but it seems that my right eye with the lower astigmatism has shifted to mirror my left eye which matches with the theory of how a change in habits can lead to a change in astigmatic status.