Primary<unk> 
Minimal-change, membranoproliferative
Secondary<unk> 
SLE, HSP, SCD
Classical characteristics/risk factors:
Minimal change disease - children, preceded by URI
Focal segmental glomerulosclerosis - Black patients, HIV/IVDA
Membranous nephropathy - White patients, HBV, HCV, SLE, gold, penicillamine, malignancy
Type 1 MPGN - HBV, HCV
Type 2 MPGN - ↓ C3
Minimal-change, membranoproliferative
SLE, HSP, SCD
Minimal change disease - children, preceded by URI
Focal segmental glomerulosclerosis - Black patients, HIV/IVDA
Membranous nephropathy - White patients, HBV, HCV, SLE, gold, penicillamine, malignancy
Type 1 MPGN - HBV, HCV
Type 2 MPGN - ↓ C3
Normal IOP
Orbital cellulitis
Orbital pseudotumor
Orbital tumor
Increased IOP
Retrobulbar abscess
Retrobulbar emphysema
Retrobulbar hemorrhage
Ocular compartment syndrome
Orbital tumor
Orbital cellulitis
Orbital pseudotumor
Orbital tumor
Retrobulbar abscess
Retrobulbar emphysema
Retrobulbar hemorrhage
Ocular compartment syndrome
Orbital tumor
Periorbital cellulitis/erysipelas
Dacryocystitis (lacrimal duct)
Dacryocele/Dacryocystocele
Dacryostenosis
Dacryoadenitis (lacrimal gland)
Allergic reaction<unk>  (pediatrics)
Blepharitis (crusts)
Chalazion (meibomian gland)
Stye (hordeolum) (eyelash folicle)
Subperiosteal abscess
Orbital abscess
Cavernous sinus thrombosis
Conjunctivitis
Contact dermatitis
Herpes zoster
Herpes simplex
Sarcoidosis
Granulomatosis with polyangiitis
Nephrotic syndrome
Primary nephrotic syndrome
Hepatorenal syndrome
Minimal-change, membranoproliferative
HELLP syndrome
Secondary nephrotic syndrome
Budd-Chiari syndrome
SLE, HSP, SCD