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Bowman’s layer. Descemet’s membrane. Pathologic Diagnosis. Diagnosis Pseudophakic bullous keratopathy with Chronic bullous keratopathy Degenerative pannus Stromal edema Severe endothelial atrophy. Pseudophakic bullous keratopathy. Iatrogenic disease - PowerPoint PPT Presentation
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Bowman’s layer
Descemet’s membrane
Pathologic Diagnosis
• Diagnosis– Pseudophakic bullous keratopathy with • Chronic bullous keratopathy• Degenerative pannus• Stromal edema• Severe endothelial atrophy
Pseudophakic bullous keratopathy
• Iatrogenic disease – Direct or delayed endothelial damage associated
with cataract surgery and intraocular lens implantation
• One of the most common indications for corneal transplantation.
Pseudophakic bullous keratopathy
• Histology– Subepithelial bullae– Stromal edema – Severe endothelial loss– Descemet’s membrane is NOT thickened
with regular caliber WITHOUT guttate excrescences
Pannus Flat superficial scar of the anterior cornea
Degenerative pannusChronic edema and bullous keratopathyLayer of connective tissue between the epithelium and Bowman’s layer (BL)BL remains intact
Inflammatory pannusTracoma Subepithelial ingrowth of inflamed fibrovascular tissue from limbusDestroys BL
Case 4
Case History
• 64 yo M• Gross description ( Contributor )– Endothelial cells of
right eye– 0.5 x 0.3 cm
translucent shave
• Diagnosis– Fuchs’ endothelial dystrophy
Descemet’s stripping with endothelial keratoplasty
(DSEK) • Alternative to corneal transplantation for
patients in primary dysfunction of the cornea endothelium.
• Advantages over traditional keratoplasy – Minimal refractive change– More rapid visual recovery – Maintenance of the structual integrity of the
recipient’s cornea
Fuchs’ dystrophy
• Often bilateral –may be asymmetric• Late onset, slow progression• Patient generally present s after age 50• Female predominance• Autosomal dominant inheritance• Associated with several mutations in the gene
for collagen type VIII at 1p34.2-p32
Fuchs’ dystrophy• Histology– Subepithelial bullae– Stromal edema – Atrophy of endothelium– Mulitilaminar thickening of Descemet’s membrane
with guttate excrescences in the central cornea– Cytoplasm of the residual endothelial cells contain
round granules of melanin pigment from iris pigment epithelium
Iris Cases
Case 5
Case History• 54 yo WF, Irritable, infected right eye for 4 M.• Vision : 20/30 OD, 20 /15 OS. • IOP: 50 mm Hg, OD, 12mm Hg OS.• Fleshy brown mass in the anterior chamber angle
inferonasally. • 3mm in width and was accompanied by and ectropion
uveae.• Marked cupping of the right optic disc. • Diagnosis at time of enucleation was intraocular tumor
with secondary glaucoma.
Case History (Gross)
• 25x25x24 mm with 1 mm ON.• Clear cornea :11 x10 mm.• The eye transmitted light well. • Pigment was scattered along the back of the
cornea, and AC was deep. • Chamber angle inferiorly was filled with a
slightly elevated gray mass.