The Calgary Guide to Understanding Disease @TheCalgaryGuide
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Cataract: Pathogenesis and clinical findings

Increased Age (most common) -> Ultraviolet light, radiation, toxins ->Denaturation and abnormal
Cataract: Pathogenesis ... crystalline lens => Cataract ... Hyper-mature enlarged cataract ... closure glaucoma #cataracts ... pathophysiology #ophthalmology
Myopia: Pathogenesis and clinical findings

 • Axial length of eye -> Long axial length of the
of the eye (ex. cataract ... pathophysiology #ophthalmology
Central Retinal Vein Occlusion (CRVO): Pathogenesis and clinical findings

#CentralRetinalVein #Occlusion #CRVO #pathophysiology #ophthalmology #diagnosis #signs #symptoms
pathophysiology #ophthalmology
Acquired Immunodeficiency Syndrome (AIDS): Summary of Causes and Ocular Manifestations
 • Molluscum lesions
 • Eyelid Kaposi
Complications #ophthalmology
Retinoblastoma: Pathogenesis and clinical findings
 • Sporadic mutation -> One allele of RB1 tumor suppressor gene
pathophysiology #ophthalmology
Diabetic Retinopathy: Pathogenesis and clinical findings

Mild Non-proliferative DR
 • Outpouchings of the weakened capillary walls or
Retinopathy #Diabetes #ophthalmology
Amblyopia ("Lazy Eye"): Pathogenesis and clinical findings
Amblyopia => 
Interruption of visual stimulation during childhood visual development
pathophysiology #ophthalmology
Posterior Vitreous Detachment: Pathogenesis and clinical findings

Separation of the cortical vitreous from the neurosensory retina posterior
pathophysiology #ophthalmology
Childhood Immunization Schedule: Why we immunize
 • Diphtheria Toxin -> URT inflammation causes pseudomembrane with hardened
hearing loss, cataracts
Orbital Cellulitis: Pathogenesis and Clinical Findings
Definitions:
a. Chemosis: Edema of the bulbar conjunctiva
b. Panopthalmitis: inflammation of all
pathophysiology #ophthalmology