11 results
Xeropthalmia: Pathogenesis and Ocular Manifestations

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

 • Environmental Factors -> Bacterial infection is encouraged by poor hygiene
from nasal or ocular ... of the limbal cornea ... the peripheral cornea ... fibrosis => • Corneal ... Trachoma #Chlamydia #pathophysiology
Orbital Cellulitis: Pathogenesis and Clinical Findings
Definitions:
a. Chemosis: Edema of the bulbar conjunctiva
b. Panopthalmitis: inflammation of all
of the bulbar conjunctiva ... Impaired extra-ocular ... Proptosis -> Exposes cornea ... -> Corneal drying ... Orbital #Cellulitis #pathophysiology
Blurry Vision - Differential Diagnosis Framework

Anatomical Approach to Eye Disease:
1. Lids/Lashes
2. Extraocular Muscles/Motility
3. Conjunctiva/Sclera
4. Cornea
5. Anterior
Conjunctiva/Sclera ... Cornea 5. ... Trauma Cornea ... Keratitis • Corneal ... Nucleus Visual Cortex
Bitot's Spots- A 4-year-old boy was brought by his father to the ophthalmology clinic with a
near the outer corners ... The ocular findings ... as a result of corneal ... NEJM #clinical #photo ... #ophth #bitot #
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 ... #ocular #differential
Onchocerciasis “River Blindness”: Pathogenesis and Ocular Manifestations
Vectorial Transmission
-> Onchocerca volvulus, a parasitic helminth, matures in to
Pathogenesis and Ocular ... Microfilariae enter the eye ... directly from the conjunctiva ... stromal keratitis -> Corneal ... RiverBlindness #pathophysiology
Aqueous Humor Production and Drainage
 • Provides nutrition, removes wastes, and transports neurotransmitters to the avascular
avascular lens and cornea ... Circulates inflammatory cells ... structural integrity of ocular ... episcleral and conjunctival ... Drainage #flow #Pathophysiology
Acute Closed Angle Glaucoma: Pathogenesis and Clinical Findings
OPHTHALMIC EMERGENCY: Early detection is essential, but most patients
present with a red eye ... • Significant cause ... -> crowding of ocular ... obstruction • Corneal ... ClosedAngle #Glaucoma #pathophysiology
Chemical Eye Injury: Pathogenesis and clinical findings
Exogenous chemical to the eye and/or adnexa
 • Ammonia, sodium
Acidic injuries cause ... penetration beyond the cornea ... Alkali injuries cause ... #Ocular #opthalmology ... #pathophysiology