I think, but I cannot prove, that the 7CR may read high with dry eyes.
Why do I think this? Sometimes I get a high value sort of out of the usual range and, instill some artificial tears, and repeat, and get a value substantially lower (> 2 mm lower)
Is there any evidence for this? Agreement on this?
I am not aware of any evidence in support of this. If your eyes are dry enough to affect the Reichert 7CR accuracy, it will report a lower quality value for the measurement.
Furthermore, when you are using the free FitEyes software there are additional metrics available for each measurement that will allow you to diagnose the quality of your measurements in more detail. The software is free, so if you want to try it you will be able to get a definitive answer to your question.
Hi Thanks for response
checked with my Reichert rep; said same thing
dry eye can result in poor 7CR scores
I explained I use only 8's and 9's to which he said
well then you are in uncharted waters; there is no published data on validity of 7CR data with dry eyes and scores of 8 and 9
so maybe 7CR reads high with high values of IOP, maybe it does not; is unknown
he suggested I do and publish the study (joke)
thanks again; I think question sufficiently answered
I would say that if you have scores of 8 and 9, your eyes are not dry enough to affect the measurements. This means your IOP values will not likely be affected.
BTW, when you are adding a comment that is not an answer, please use the "add comment" feature. The moderator moved your post to a comment for you this time.
Use of this site constitutes acceptance of our User Agreement and Privacy Policy.
I think that I've noticed something similar with my iCare.