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Medical Forum / General / Vision / October 2006Astigmatism
When does astigmatism cause visual disturbance? I've heard people say that even 0.75 is nothing really so when does it interfere in a significant way? > When does astigmatism cause visual disturbance? I've heard people say that > even 0.75 is nothing really so when does it interfere in a significant way? Even -0.25 will have an effect upon acuity. If astigmatism is the only problem, then small amount are more troublesome, ie a person with 5D of myopia and 0.50 astigmatism will be better able to tolerate not correcting the astigmatism than someone with only the astigmatism. The axis of the astigmatism matters too, oblique or vertical axis is less well tolerated than horizontal axis. Finally, people vary greatly in their tolerance of blur. One person may wear 0.50 full time and feel very blurred without it, another person will never wear 1.50 and feel fine. Dr Judy > > When does astigmatism cause visual disturbance? I've heard people say that > > even 0.75 is nothing really so when does it interfere in a significant way? My distance scrip for one eye is +1.75 and +0.50 cyl. With the astigmatism uncorrected, wearing glasses with just the spherical, the blur is quite noticeable to me. If my other eye also had this problem, the lack of focus seen through both would be pretty distressing. But your mileage may vary. LD > When does astigmatism cause visual disturbance? I've heard people say that > even 0.75 is nothing really so when does it interfere in a significant way? -2.25 interferes in a monumentally significant way :-(  SignatureCheers, Bev =+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+= "The object in life is not to be on the side of the majority, but to be insane in such a useful way that they can't commit you." -- Mark Edwards |
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