10 results
Xeropthalmia: Pathogenesis and Ocular Manifestations

Decr Visual pigment -> Keratinization, thickening & non-wetting of the conjunctiva
production -> Corneal ... and cornea, typically ... blindness) • Corneal ... dryness of the cornea ... #ophthalmology
Trachoma: Pathogenesis and clinical findings

 • Environmental Factors -> Bacterial infection is encouraged by poor hygiene
of the limbal cornea ... the peripheral cornea ... fibrosis => • Corneal ... Trachoma #Chlamydia #pathophysiology ... #ophthalmology
Orbital Cellulitis: Pathogenesis and Clinical Findings
Definitions:
a. Chemosis: Edema of the bulbar conjunctiva
b. Panopthalmitis: inflammation of all
of the bulbar conjunctiva ... Proptosis -> Exposes cornea ... -> Corneal drying ... Orbital #Cellulitis #pathophysiology ... #ophthalmology
Algorithm for the Evaluation of the Red and Painful Eye
1. External
2. Lids and Lashes
3. Conjunctiva and
Red and Painful Eye ... Conjunctiva and ... Cornea 5. ... #Differential #Anatomy ... #Ophthalmology
Keratoconus: Pathogenesis and Clinical Findings
Genetics
 • Family history of keratoconus
 • Ehlers-Danlos syndrome
 • Down, Turner,
Contact lens use • Eye ... Bilateral, asymmetric corneal ... Rizutti's Sign • Corneal ... #pathophysiology ... #ophthalmology
Approach to an Eye Exam

1. History
2. Obvious Physical Trauma
3. Initial Assessment
  A. Visual Acuity
Approach to an Eye ... Accommodation, RAPD ... Sclera/ Conjunctiva ... Cornea D. ... EyeExamination #Approach #Ophthalmology
Onchocerciasis “River Blindness”: Pathogenesis and Ocular Manifestations
Vectorial Transmission
-> Onchocerca volvulus, a parasitic helminth, matures in to
Microfilariae enter the eye ... directly from the conjunctiva ... stromal keratitis -> Corneal ... RiverBlindness #pathophysiology ... #ophthalmology
Swirling flow of aqueous humor
Aqueous humor flows from the posterior chamber of the eye to the
chamber of the eye ... chamber, behind the cornea ... aqueous #humor #ophthalmology ... #pathophysiology ... #Anatomy #flow
Astigmatism: Pathogenesis and clinical findings
Astigmatism - deviation from spherical curvature of the lens or eye

Refracting power
of the lens or eye ... Refracting power of the cornea ... rule astigmatism: cornea ... rule astigmatism: cornea ... passing through the cornea
Acute Closed Angle Glaucoma: Pathogenesis and Clinical Findings
OPHTHALMIC EMERGENCY: Early detection is essential, but most patients
present with a red eye ... anterior chambers Anatomic ... obstruction • Corneal ... ClosedAngle #Glaucoma #pathophysiology ... #ophthalmology