Lens dislocation: Difference between revisions
ClaireLewis (talk | contribs) No edit summary |
|||
| (One intermediate revision by one other user not shown) | |||
| Line 1: | Line 1: | ||
==Background== | ==Background== | ||
[[File:Schematic diagram of the human eye en.png|thumb|Eye anatomy.]] | |||
*aka Ectopia Lentis | *aka Ectopia Lentis | ||
*Dislocation: anterior or posterior displacement of lens due to complete separation of lens zonule fibers | *Dislocation: anterior or posterior displacement of lens due to complete separation of lens zonule fibers | ||
| Line 53: | Line 54: | ||
*[[Blunt orbital trauma]] | *[[Blunt orbital trauma]] | ||
*[[Vitreous hemorrhage]] | *[[Vitreous hemorrhage]] | ||
*[[Acute angle glaucoma]] | *[[Acute angle closure glaucoma]] | ||
*[[Hyphema]] | *[[Hyphema]] | ||
*[[Retinal detachment]] | *[[Retinal detachment]] | ||
Latest revision as of 21:39, 18 January 2023
Background
- aka Ectopia Lentis
- Dislocation: anterior or posterior displacement of lens due to complete separation of lens zonule fibers
- Subluxation: incomplete disruption of lens zonule fibers
- Acute angle closure glaucoma: can result when anteriorly displaced lens obstructs aqueous flow
- Lens capsule disruption can cause lens stroma to swell and become cloudy→ acute glaucoma and traumatic cataracts
Causes
- Most commonly due to blunt eye trauma
- Less commonly due to lightening/electrocution
- Can occur after minor or no trauma in patients with:
- Marfan syndrome
- Homocystinuria
- Ehlers-Danlos syndrome
- Tertiary syphilis
- Prior cataract surgeries
Clinical Features
- Red, painful eye
- Diplopia, reduced visual acuity
- Floaters
- +/- iris tremor after rapid eye movement
- Raised intraocular pressure, if aqueous flow blocked
- Slit lamp: edge of subluxated lense can be seen with dilated pupil
Associated with
Differential Diagnosis
Unilateral red eye
- Nontraumatic
- Acute angle-closure glaucoma^
- Anterior uveitis
- Conjunctivitis
- Corneal erosion
- Corneal ulcer^
- Endophthalmitis^
- Episcleritis
- Herpes zoster ophthalmicus
- Inflamed pinguecula
- Inflamed pterygium
- Keratoconjunctivitis
- Keratoconus
- Nontraumatic iritis
- Scleritis^
- Subconjunctival hemorrhage
- Orbital trauma
- Caustic keratoconjunctivitis^^
- Corneal abrasion, Corneal laceration
- Conjunctival hemorrhage
- Conjunctival laceration
- Globe rupture^
- Hemorrhagic chemosis
- Lens dislocation
- Ocular foreign body
- Posterior vitreous detachment
- Retinal detachment
- Retrobulbar hemorrhage
- Traumatic hyphema
- Traumatic iritis
- Traumatic mydriasis
- Traumatic optic neuropathy
- Vitreous detachment
- Vitreous hemorrhage
- Ultraviolet keratitis
^Emergent diagnoses ^^Critical diagnoses
Evaluation
- Evaluate for other injuries
- Slit lamp exam, visual acuity
- Ultrasound
- Lense displaced from usual position
- evidence of other associated traumatic injuries
- Measure intraocular pressure with Tonopen
Management
- Optho consult (emergently if elevated IOP!)
- Optho will either repair surgically or observe, depending on displacement and associated injuries/symptoms
Disposition
See Also
- Blunt orbital trauma
- Vitreous hemorrhage
- Acute angle closure glaucoma
- Hyphema
- Retinal detachment
- Globe rupture
External Links
- Video of slit lamp exam of dislocated lens: http://www.rootatlas.com/wordpress/video/579/lens-subluxation-with-vitreous-video/