Does the Reichert 7CR tonometer read high with dry eyes?
1
Entering edit mode
14 months ago
engrav • 160
@engrav

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?

self-tonometry tonometer dry-eye reichert-7cr-tonometer • 402 views
ADD COMMENTlink
0
Entering edit mode

I think that I've noticed something similar with my iCare.

ADD REPLYlink
1
Entering edit mode
14 months ago
david 3.9k
@david_fe

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.

ADD COMMENTlink
0
Entering edit mode

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

ADD REPLYlink
1
Entering edit mode

Thanks again; I think question sufficiently answered

Please mark the answer as accepted, and vote too. Thanks.

ADD REPLYlink
0
Entering edit mode

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.

ADD REPLYlink

Login before adding your answer.

Traffic: 15 users visited in the last hour

Use of this site constitutes acceptance of our User Agreement and Privacy Policy.