The Calgary Guide to Understanding Disease @TheCalgaryGuide
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Periorbital Cellulitis: Pathogenesis and Clinical Findings
Definitions:
a. Dacryoadenitis: infection of the lacrimal glands
b. Conjunctivitis: inflammation of the
Periorbital Cellulitis ... lacrimal sac, secondary ... considered periorbital cellulitis ... #Periorbital #Cellulitis ... pathophysiology #ophthalmology
Retinoblastoma: Pathogenesis and clinical findings
 • Sporadic mutation -> One allele of RB1 tumor suppressor gene
Pseudo-hypopyon • Secondary ... glaucoma • Strabismus ... pathophysiology #ophthalmology
Secondary Glaucoma: Pathogenesis and Clinical Findings
Open-Angle Secondary Glaucoma:
 • Pre-trabecular defect -> Aqueous outflow is obstructed
Secondary Glaucoma ... Findings Open-Angle Secondary ... ganglion cell injury ... factors, oxidative injury ... #ophthalmology
Primary Open-Angle Glaucoma: Pathogenesis and Clinical Findings
 • Risk factors -> Incr IOP, Incr age, African-American
Primary Open-Angle Glaucoma ... ganglion cell injury ... factors, oxidative injury ... central vision #Secondary ... pathophysiology #ophthalmology
Cataract: Pathogenesis and clinical findings

Increased Age (most common) -> Ultraviolet light, radiation, toxins ->Denaturation and abnormal
meshwork contact -> Secondary ... angle closure glaucoma ... pathophysiology #ophthalmology