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Medical Forum / General / Vision / October 2005floaters darkened a bit after pupil dilation, plausible?
Hi, I noticed a very small subtle (~2%) darkening of point size floaters after pupil dilation was initiated by the ophthalmologist to see inside my retina. Is it possible that pupil dilation which I read can cause very small interocular pressure can press or compress some portion of floaters making them darker? Is this plausible or not possible at all? I can't get in touch with the opthalmology because he was out of the country. kyle When you "see" your floaters, you are not actually seeing the floater itself, but instead you are seeing a shadow that the floater casts on your retina. So, when you have a thorough dilated examination the vitreous can be stirred up enough to move the floater forward or backward from your retina. As you know when making finger puppet shadows with kids, the longer the distance from the puppet to the screen, the bigger the image. Hence, a floater moving slightly closer to the front of the eye will cast a LARGER SHADOW, hence appearing bigger. So, the dilation did not physically change the size of your floater, but only the image of it that you see.. > When you "see" your floaters, you are not actually seeing the floater > itself, but instead you are seeing a shadow that the floater casts on [quoted text clipped - 7 lines] > physically change the size of your floater, but only the image of it > that you see.. Gee. Know any method (such as shaking my head intensely) so I can bring the floaters farther from the retina (more forward to the front or lens)? I didn't know dilated examination can move it. Is there any chance it can create new ones by solidfying a bit? Kyle There is no "scientific method" top move your floaters. But, the "old farm wife's remedy" for floaters is to prop your forehead on your pillow and sleep face down for a month. In theory, you are using gravity to pull your floaters into the front lower third of your vitreous, which is away from your visual axis. I personally never slept face down for a whole night, let alone every night for a month. Something about suffocation makes me flip over in my sleep. ;) > > When you "see" your floaters, you are not actually seeing the floater > > itself, but instead you are seeing a shadow that the floater casts on [quoted text clipped - 14 lines] > > Kyle There is no "scientific method" TO MOVE..... (typing too fast. sorry.) > There is no "scientific method" top move your floaters. But, the "old > farm wife's remedy" for floaters is to prop your forehead on your [quoted text clipped - 22 lines] > > > > Kyle What dictates whether the floaters would move front or back during pupil dilation drops?? If there is tendency to move back near the retina. Does it mean after every pupil dilation sessions, your floaters can get nearer the retina. There must be some dynamics involved that can make the floaters move back or front in pupil dilation, what is that. I'm asking because I may have an Optic Coherence Tomograph. Does this OCT scan include 360 degree scan such that every point of the retina is scanned?? I'd like to have full analysis of my retina. Can the OCT see micro retinal tear? kyle
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