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Depends: Visual field testing doesn't require dilation. Oct can also be performed without dilation although in some patients the signal strength and accuracy of the measurements can improve with dilation. Optic nerve photography is also best performed dilated stereo photographs are preferable. Dilation can last fabout 2-10 hours depending on the drugs used and color of the iris. Blue is more sensitive. ...Read moreSee 2 more doctor answers
Glaucoma testing: Common glaucoma tests include intraocular pressure measurement, pachymetry (corneal thickness), visual field test, and oct. Ask your glaucoma specialist what each test is used for. If any test is abnormal, you may need glucoma treatment to protect your eyesight. ...Read moreSee 2 more doctor answers
In monitoring open angle glaucoma, if oct test results taken 1 yr. Apart are different, can it mean glaucoma isn't stable? No change in visual field.
Open angle glaucoma: By definition will diminish your retinal nerve fiber layer (rnfl) over time if not well controlled. Serial rnfl scans are highly sensitive and can detect small changes prior to a formal visual field test demonstrates changes. Questions if loss is occurring can be answered by looking at serial scans of the rnfl over time and looking for trends. So, yes, it may not be stable and requires follow up. ...Read moreSee 1 more doctor answer
Sister 25 years old. She glaucoma suspect. Vision test and HRT good. But rnfl 0.19 mm. I searched the internet and this limit value. Is this bad ?
Usually: Before dilation, most eye doctors will evaluate the front part of your eye to see if you are at risk for angle closure, and check your eye pressure at that point. There are times, though, when we recheck pressure following dilation to see if it changes, and in a low risk patient (e.g. Not at risk for angle closure), it is not unreasonable to check after dilation. ...Read more
Yes: Intraocular pressure should always be measured prior to dilation as it typically increases a little after dilation, especially when monitoring for glaucoma. There are a few conditions where it may be checked after and eye doctors will typically recheck pressures after dilation to ensure accuracy of their technician, but as a rule, this should be documented prior to dilation. ...Read more
Multiple tests…: Are requested for a glaucoma patient. After checking the patient's vision, The eye pressure should be taken, and refraction to fully correct for glasses. There is a measurement of the thickness of the cornea in addition to a visual field test and possibly a scan of the retinal nerve fiber layer of the back of the eye. A picture of the optic nerve also helps. ...Read moreSee 1 more doctor answer
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