This video shows an eye with significant cornea band keratopathy, and how it is removed with EDTA chelation. About this conditionBand Keratopathy, is a precipitation of calcium salts that forms under the epithelium. It occurs in a band pattern across the middle cornea that is most exposed to air. The believe is that evaporation of…
This video shows a cornea with amiodarone verticillata deposits. You can see these as a whorl pattern – the entity is also called whorl keratopathy or hurricane keratopathy. These deposits are benign, difficult to see, and rarely (if ever) have any visual significance. Drugs that can cause this pattern: CACTI Mneumonic: chloroquine, amiodarone, chlorpromazine, tamoxifen,…
This video shows an eye with Terrien’s Marginal Degeneration. This is when the cornea thins at the edges toward the limbus. The etiology of this condition is not understood, but classically these eyes present with a band of thinning with a step-off toward the center. Also, you can see white lipid deposit, vessels growing into…
This video shows a sterile corneal infiltrate at the inferior limbus in an eye with blepharitis. This opacity is entirely sterile and occurs from a hypersensitivity reaction at the limbal vessels in the cornea. This eye was treated successfully with good lid hygeine and a mild steroid. This entity is usually bilateral, and as you…
This slitlamp video shows a phylectenule bump on the surface of the cornea. This inflammatory nodule is caused by a delayed hypersensitivity reaction to staph antigens in a case of bad blepharitis. This case was successfully treated with good lid hygeine, erythromycin ointment, and a mild steroid. Download this video To download this video, right…
This video shows a small piece of metal stuck to the surface of the eye. It is removed from the cornea using an 18 gauge needle at the slit-lamp microscope. Particles like this need to be removed because they are painful, rust quickly, and can lead to infection and corneal ulcer. Sometimes it is possible…
This video shows epithelial ingrowth that occurs sometimes after LASIK surgery. If you look closely at the lasik flap, you can see an area of white deposits in an island configuration. These are collections of corneal epithelial cells that have grown under the flap. The surface epithelial cells can proliferate quickly, explaining why surface abrasions…
This video shows the classic dendritic ulcer seen with HSV keratitis. You can see them easily with the use of fluorescein staining (that’s why everything is blue in the movie). These patients typically present with a painful, red eye with photophobia. The HSV is typically the type-1 hsv infection that most people are inoculated with…
This video shows a cornea with Fuch’s dystrophy. You can see guttata or guttae on the back surface of the cornea. These bumps indicate endothelial pump difficulty, and appear as a “beaten metal” appearance. If you look closely (look where the arrow is pointing) you can see a pock-marked surface that looks like craters on…
This slit-lamp video shows a large, central corneal ulcer that was caused by fusarium fungus. Classically, fungal ulcers are described as gray, feathery borders, with satellite lesions. In reality, the only way to determine the real pathologic cause is with a good culture (molds take forever to grow and require a deep sample) and time…
This video shows the removal of metal particle from the surface of the eye using a needle. Metal particles can occur from metal grinding and machine work … the metallic flakes have a tendency to get into hair then fall onto the cornea and stick. This quickly rusts and if not removed soon, can cause…
This video shows an eye with EKC viral conjunctivitis, caused by the adenovirus. Here you can see numerous subepithelial infiltrates. The easiest way to visualize these is by aiming your slit-lamp light so it comes in from the side and diffusely illuminates the corneal surface. This cornea is suffering from EKC (epidemic keratoconjunctivitis). The adenovirus…
This eye has undergone DSEAK (Descemet’s Stripping Automated Endothelial Keratoplasty) also called DSEK. As you can see here, the endothelial transplant has separated from the inner cornea. This was reopposed with sf6 gas in the anterior chamber. DSEK has many advantages over traditional PK and is a wonderful alternative procedure for certain conditions. Download this…
This eye has had Lasik, and under the corneal flap you can see a small scar. This resulted from DLK (diffuse lamellar keratitis) that can occur when debris at the flap interface causes a non-infectious inflammatory response. This condition is also called the Sands of the Sahara because of the usual wavy appearance of the…
This cornea has a small dellen (thinning of the corneal stroma) that occured after cataract surgery. The cornea thins when it is dehydrated, and in this case, a localized area of conjunctival edema next to the limbus interfered with the normal tear-blink mechanism. Fortunately, this thinning quickly resolved with aggresive lubrication. Download this video To…
This video shows a cornea with a small laceration through the stroma. You can tell that the wound goes all the way into the anterior chamber as the wound is seidel positive when fluorescein is applied. Download this video To download this video, right click on a link below and choose “Save Target As…” cornealaceration.wmv…
This video shows an intra-stromal lens that’s been inserted directly into the cornea. These lenses are no longer used as they caused many problems with corneal oxygenation. Download this video To download this video, right click on a link below and choose “Save Target As…” corneallens.wmv (5.3 meg, Windows video file) Screencaptures