A 66-year-old female asked:
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glaucoma exam dr. noted there was a questionable change to rnfl but didn't seem concerned. said tests looked good & glaucoma stable. what is rnfl?

1 doctor answer
Dr. Hussain Elhalis
10 years experience Ophthalmology
Nerve fibers: The optic nerve is a cable with a million fibers. This is a measurable thickness. In glaucoma, there is a loss of fibers and thus, lower measurements or thinning. The RNFL thickness is measured and tracked overtime, with lower numbers suggesting thinning and progression of glaucoma. Its not a perfect test with a margin of error, sometimes only offering 'questionable' changes.
Answered on Mar 11, 2015
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Probably nothing: In the absense of other findings, it probably doesn't mean anything. I would just repeat it in the future.
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