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Ophthalmology
Coloured Atlas
Cornea Herpes Simplex
Irregular dendritic (branch-like) lesion of corneal epithelium stained with fluorescein.
Glaucoma
Asymmetrical increase of cup: disc ratio (0.8). Cupping seen where vessels disappear over the edge of the attenuated rim.
Diabetic Retinopathy No. 2
Proliferative Diabetic Retinopathy
Fan-shaped network of new blood vessels branching onto optic disc (neovascularization). Also note dot hemorrhages and microaneurysms.
Diabetic Retinopathy No. 1
Proliferative Diabetic Retinopathy
- Dot-blot hemorrhages or micro-aneurysms
- Sub-hyaloid hemorrhages
- Hard exudates in the macular region (circinate)
- Intra-retinal hemorrhages
- Neovascularization of the disc
Diabetic Retinopathy – Red Free
Proliferative Diabetic Retinopathy
Red-free image of previous image Proliferative Diabaetic Retinopathy.
Cytomegalovirus Retinitis
White exudates surrounding hemorrhages and areas of necrosis. Distinct border between diseased and normal retina.
Concentric Enlargement – Thinning
Concentric Enlargement of Optic Disc
Some inferior and temporal neuroretinal thinning. (Courtesy of 2003 Dr. Yan)
Concentric Enlargement
Concentric Enlargement of Optic Disc
Deepening of Optic Cup. (Courtesy of 2003 Dr. Yan)
Angle Closure – Secondary
Acute Secondary Angle Closure Glaucoma
Acute secondary angle closure glaucoma, with shallow anterior chamber, cornea edema, and dilated pupil. Similar to primary angle closure glaucoma but precipitated by cataractous lens.
Angle Closure – Congestive
Acute Congestive Angle Closure Glaucoma
Acute congestive angle closure glaucoma, with ciliary flush, shallow anterior chamber, and corneal edema. Pupil is fixed, mid-dilated and unreactive to light and accommodation. (Courtesy of Elsevier)
Hordeolum or Stye
Blockage of eyelid gland. Chronic and internal hordeolum is called a chalazion. (Courtesy of eylearn.med.toronto.ca)
Blepharitis
Blepharitis as characterized by erythema of the lid margins and scales on the lashes. (Courtesy of Department of Ophthalmology, University of Toronto)