The Wills Eye Manual: Differential Diagnosis of Ocular Symptoms (Chapter 1) Flashcards
Burning? (4 More, 6 Less)
More:
- Blepharitis,
- Meibomitis,
- DES
- Conjunctivitis
Less:
- Corneal defects
- Inflamed pterygium or pinguecula
- Episcleritis
- SLK
- Ocular toxicity (med, makeup, contact lens solution)
- Contact lens-related problems
Define Transient Visual Loss?
Vision returns to normal within 24 hours, usually within 1 hour
More common causes of transient visual loss lasting: Few seconds? Few minutes? Ten to 60 minutes?
Few seconds: Papilledema (usually bilateral)
Few minutes: Amaurosis fugax
Ten to 60 minutes: Migraine (with or without HA)
Any of these may causes varying lengths of transient visual loss.
Less common causes of transient visual loss? (9)
- Impending CRAO
- Ischemic optic neuropathy
- Ocular ischemic syndrome (carotid occlusive disease)
- Glaucoma
- Sudden change in BP (i.e. orthostatic hypotension)
- CNS lesion
- Optic disc drusen
- AION (giant cell arteritis)
- Orbital lesion (vision loss may be associated with EOM)
More common causes of sudden, painless visual loss lasting >24 hours? (7)
- RAO
- RVO
- Ischemic optic neuropathy
- Vitreous hemorrhage
- Retinal detachment
- Optic neuritis (pain with EOM in >50% of cases)
- Sudden discovery of preexisting unilateral visual loss
Less common causes of sudden, painless visual loss lasting >24 hours? (3)
- CNS disease (stroke, tumor, etc)
- Methanol poisoning
- Ophthalmic artery occlusion (may also have EOM deficit and ptosis)
More common causes of gradual, painless visual loss over weeks to months/years? (7 )
- Cataract
- Refractive error
- Open-angle glaucoma
- Chronic angle-closure glaucoma
- Chronic retinal disease (e.g, ARMD, diabetic retinopathy)
Less common causes of gradual, painless visual loss over weeks to months/years? (2)
- Chronic corneal disease (e.g., corneal dystrophy)
- Optic neuropathy/atrophy (e.g., CNS tumor)
Painful loss of vision? (5)
- Acute angle-closure glaucoma
- Optic neuritis (pain may only be with EOM)
- Uveitis
- Endophthalmitis
- Corneal hydrops (keratoconus)
Posttraumatic visual loss? (12)
- Eyelid swelling
- Corneal irregularity
- Hyphema
- Ruptured globe
- Traumatic cataract
- Lens dislocation
- Commotio retinae
- Retinal detachment
- Retinal or vitreous hemorrhage
- Traumatic optic neuropathy
- Cranial neuropathies
- CNS injury
More common causes of distortion of vision? (7)
- Refractive error
- Acquired myopia
- Acquired astigmatism
- Macular disease
- Corneal irregularities
- Intoxication (e.g. methanol, ethanol, hallucinogens)
- Pharmacologic (e.g. scopolamine patch)
Causes of acquired myopia? (5)
- Cataract
- Diabetes (edema of lens)
- Ciliary spasm
- Medications
- Retinal detachment surgery
Causes of acquired astigmatism? (4)
- Anterior segment surgery
- Chalazion
- Orbital fracture
- Corneal edema
Less common causes of distortion of vision? (7)
- Keratoconus
- Topical eye drops (e.g. mitotics, cycloplegics)
- Retinal detachment
- Migraines
- Hypotony
- CNS abnormalities (including papilledema)
- Nonphysiologic
More common causes of monocular diplopia? (5)
- Refractive error
- Incorrect spectacle alignment
- Corneal opacities or irregularities
- Cataract
- Iris defects
Less common causes of monocular diplopia? (5)
- Dislocated natural lens or lens implants
- Macular disease
- Retinal detachment
- CNS causes (very rare)
- Nonphysiologic
Typically intermittent causes of binocular diplopia? (2)
- Myasthenia gravis
- Intermittent decompensation of an existing phoria
Typically constant causes of binocular diplopia? (9)
- Isolated sixth, third, or forth nerve palsy
- Orbital disease (Thyroid eye disease, Idiopathic inflammation, Orbital tumor)
- Cavernous sinus/superior orbital fissure syndrome
- Status-post ocular surgery
- Status-post trauma (Orbital wall fracture, orbital edema)
- Internuclear ophthalmoplegia
- Vertebrobasilar artery insufficiency
- Other CNS lesions
- Spectacle problem
Eyelash loss? (9)
- Trauma
- Burn
- Thyroid disease
- Vogt-Koyanagi-Harada syndrome
- Eyelid infection or inflammation
- Radiation
- Chronic skin disease (e.g. alopecia areata)
- Cutaneous neoplasm
- Trichotillomania