This cataract complication is rarely seen. Here you can see a piece of the iris (the colored part of the eye) that has prolapsed upwards through the cataract incision. This particular surgery was performed with the “scleral tunnel” technique, where the doctor creates the entry incision through the sclera and tunnels into clear cornea before…
This video shows a laser iridotomy performed on an eye with angle-closure glaucoma. A laser periphery iridotomy (LPI) is a procedure where you use a laser to blast a hole through the iris. This allows fluid from behind the iris to flow forward into the anterior chamber … and eventually drain out of the eye….
This video shows what the Rizzuti’s light reflex looks like in eyes with keratoconus. You perform this test by shining a penlight into the eye at an oblique angle. The cone shape of the cornea causes the resulting iris light reflection to a point. This is hard to explain, so you should check out the…
This video shows new, abnormal blood vessels growing on the surface of the iris. This NVI (neovascularization of the iris) is usually seen with bad diabetic retinopathy or central retinal vein occlusions. Any ischemic state in the retina can lead to VEGF upregulation … thus promoting new vessel growth. Iris vessels are an ominous sign,…
This video shows an iris coloboma defect in the eye. As you can see here, the iris muscle hasn’t completely formed in the infero-nasal portion of the globe. This gives the normally round pupil a “keyhole” appearance. If you look closely, you can even see the edge of the lens … which you can’t normally…
This video shows what appears to be iris sphincter hypertrophy at the pupil margin. Some might also describe this as very mild ectropion uvea. Download this video To download this video, right click on a link below and choose “Save Target As…” ectropionuvea.wmv (3.0 meg, Windows video file) Screencaptures