Aa
A
A
A
Close
Eye Care Forum
This expert forum is not accepting new questions. Please post your question in one of our medical support communities.
Avatar universal

Difference in corneal thickness

Today I went for a consultation for laser eye surgery. They used a Pentacam and told me that my corneal thickness was approximately 550 in each eye. This came as a big surprise to me as about two years ago I went for a contact lens appointment and was told that my corneal thickness was about 494 in one eye and 516 in the other. I'm not sure what equipment they used to test my thickness (possibly a corneal topographer). Now I'm confused and don't know what to believe. Two days ago, I had some bad news and spent a few hours crying. Could this have somehow caused my corneas to swell and given me inaccurate readings at the consultation today?
3 Responses
2078052 tn?1331933100
MEDICAL PROFESSIONAL
I don't know if the crying could cause an increase in corneal thickness, but it is possible that the other, thinner measurement resulted from some corneal dehydration.  The bottom line is that these measurements somewhat can vary with the technique used and with the technician.  If you are considering LASIK, the pachymetry measurement (corneal thickness) should be repeated; the surgeon needs to be confident in the accuracy of the reading, and in its stability.
Avatar universal
Thank you for your reply. At around the time I had the first measurement taken, I had been using Opticrom eye drops for Giant Papillary Conjunctivitis. The active ingredient in Opticrom is sodium cromoglicate. Do you think these eye drops could have caused dehydration of my cornea and therefore a thinner corneal thickness reading?
2078052 tn?1331933100
MEDICAL PROFESSIONAL
I am not aware of that association, but the measurements should be repeated until they are stable and reproducible.  Measure twice (or more!) and cut once.
Popular Resources
Find out how beta-blocker eye drops show promising results for acute migraine relief.
Eye whitening, iris color change, and eyeball "bling." Eye expert Dr. John Hagan warns of the dangers from these unnecessary surgeries.
Eye expert John Hagan, MD, FACS, FAAO discusses factors to consider and discuss with your eye care team before embarking on cataract surgery.
Is treating glaucoma with marijuana all hype, or can hemp actually help?
Protect against the leading cause of blindness in older adults
Got dry eyes? Eye drops aren't the only option! Ophthalmologist John C. Hagan III, MD explains other possible treatments.