Regarding axis numbers, curvature numbers and kerotometers…?

Question

I’m 34. This story is a problem with blurry vision in only my right eye. Left eye is perfectly fine. Here we go…I’ve been wearing soflens Toric 66 for about 5 years now. In Feb ’08 I could wear my glasses that I’ve had for 5 years now that has the same clarity as my new glasses.

This year I get a new prescription for same contact lens I have been wearing. Prescription in right eye at this time was -1.75, axis 90. left eye was -1.25, axis 90. In Feb ’08 the Kerotometer that was used had me stare at a house on the hill while it automatically found my curvature numbers that were in the 4200/4400 range.

a few weeks later with wearing new contacts I end up w/ blurred vision in my right eye after wearing contacts for just a few weeks. I try my new glasses and old glasses and have the blurred vision. Vision comes back while wearing glasses for 2 weeks. I throw in a different set of contacts, end up with blurred vision in the same eye after wearing contacts for a day.

Answer 1

big problem is see, you do not give correct info on Rx.   contact lenses only come in axis in multiples of 5.  they are not like glasses.  and you did not give give the complete Rx.  You did not give the cylinder.  Only the sphere.  So I need more info before I can give you the answer

Answer 2

Not having see you myself, I can only speculate.   Most keratometers only read the central 3 mm of your cornea.  The curvature of the lens that has worked for years, may no longer be correct if portions of the cornea have changed outside of those 3 mm.  In general, an 8.5 lens (such as soflens 66 toric) might be too tight for the measurements you've given (and is very likely given the symptoms you present).  Your best bet is to ask to have a corneal topography reading done.  This will measure a larger zone of your cornea and may help determine if the current lens is fitting improperly.  I use it all the time in my practice to fit lenses.  As for the axis change, that is not very much, especially if you are having changes exerted by ill-fitting contact lenses.

Answer 3

regarding the axis changes - those generally are very stable, wouldn't expect to change even over several years.

Answer 4

If all these specialists keep telling you there is no medical explanation for the blurred vision, then maybe you need to see a different type of specialist.  Some other causes of blurred vision are high blood pressure, diabetes, tumors on/near the eye and/or brain stem.  Someone should have told you that last month or two doctors ago.  

We just recently suggested to a patient in our office to get her blood pressure and sugars checked.  She was in serious need of meds!!!!