18 results
Vision Loss - Differential Diagnosis
Chronic: 
  - Cornea: Scarring, Edema
  - Lens: Cataracts
Vision Loss - Differential ... Chronic: - Cornea ... Cataracts - Macula: Macular ... Painful: Keratitis, Corneal ... Differential #Diagnosis #causes
Xeropthalmia: Pathogenesis and Ocular Manifestations

Decr Visual pigment -> Keratinization, thickening & non-wetting of the conjunctiva
Pathogenesis and Ocular ... production -> Corneal ... conjunctiva and cornea ... blindness) • Corneal ... dryness of the cornea
Keratoconus: Pathogenesis and Clinical Findings
Genetics
 • Family history of keratoconus
 • Ehlers-Danlos syndrome
 • Down, Turner,
Bilateral, asymmetric corneal ... degeneration, and cone-shaped ... Rizutti's Sign • Corneal ... Sudden Vision Loss ... #pathophysiology
Chronic Vision Loss by Anatomic Location - Differential Diagnosis Algorithm
Cornea:
 • Keratoconus
 • Stromal Scaring
 •
Diagnosis Algorithm Cornea ... : • Keratoconus ... • Edema • Pterygium ... Degeneration (Wet, Dry) Retina ... Diagnosis #Algorithm #Causes
Blurry Vision - Differential Diagnosis Framework

Anatomical Approach to Eye Disease:
1. Lids/Lashes
2. Extraocular Muscles/Motility
3. Conjunctiva/Sclera
4. Cornea
5. Anterior
Cornea 5. ... Trauma Cornea ... Keratitis • Corneal ... Nucleus Visual Cortex ... vision → visual loss
Red Eye - Differential Diagnosis Framework

What?
Redness in the eye can be caused by many conditions and
Conjunctivitis, corneal ... Episcleritis Ocular ... Blepharitis Cornea ... • Corneal ulcer ... Conjunctivitis #ocular
Differential Diagnosis for Vision Loss
Unilateral, Painful Vision Loss:
 • Corneal abrasion, Acute angle-closure glaucoma, Inflammation-iritis, uveitis,
Painful Vision Loss ... : • Corneal abrasion ... : • Retinal detachment ... or hemorrhage, Retinal ... differential #diagnosis #causes
Hyperopia: Pathogenesis and clinical findings
 • Axial length of eye -> Short axial length of the
of the eye (ex. cornea ... point behind the retina ... Light rays require less ... focused onto the retina ... #Hyperopia #pathophysiology
Astigmatism: Pathogenesis and clinical findings
Astigmatism - deviation from spherical curvature of the lens or eye

Refracting power
Refracting power of the cornea ... rule astigmatism: cornea ... rule astigmatism: cornea ... passing through the cornea ... • Headache • Ocular
Acute Closed Angle Glaucoma: Pathogenesis and Clinical Findings
OPHTHALMIC EMERGENCY: Early detection is essential, but most patients
• Significant cause ... -> crowding of ocular ... obstruction • Corneal ... sparring) • Loss ... ClosedAngle #Glaucoma #pathophysiology