Download - SELAMAT DATANG Dr. SANTHOSH ASSISTANT PROFESSOR DEPARTMENT OF OPHTHALMOLOGY K.M.C. MANIPAL
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SELAMAT DATANGSELAMAT DATANG Dr. SANTHOSH
ASSISTANT PROFESSORDEPARTMENT OF OPHTHALMOLOGY K.M.C. MANIPAL
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Ectopia lentisEctopia lentis
Displacement of the lens
from its normal position
It is either completely displaced [dislocated ] or partially displaced [ subluxated]
May be inherited or acquired
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Subluxation of lensSubluxation of lens
Definition : Partial displacement of the lens
: Occurs when the zonules are torn in
one segment
: It still remains in the pupillary area
: Displaced opposite.
Causes Inherited
Acquired
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Subluxation of lensSubluxation of lens
Inherited
Causes Marfan’s syndrome Weil Marchesani syndrome Homocystinuria Aniridia Hyperlysinemia Familial ectopia lentis
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Subluxation of lensSubluxation of lens
Acquired
Causes Trauma
Large eye [myopia,buphthalmos]
Hypermature cataract
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Subluxation of lensSubluxation of lens
Symptoms : depends whether it’s anterior or posterior
diplopia
pain
redness
blurring of vision Indications for surgery : Diplopia
: Lens induced uveitis
: Secondary glaucoma Management : Leave alone if the patient is asymtomatic.
: Removal of the lens with a vectis or ICCE
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Dislocation of lensDislocation of lens
Definition : complete displacement of the lens from the pupillary area.
Types : anterior or posterior
Symptoms: pain, redness, blurring of vision
Signs: Depends on the type of dislocation
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Dislocation of lensDislocation of lens
Complications :
Corneal endothelium touch Secondary glaucoma
Vitreous haemorrhage Retinal tear Retinal detachment Chronic uveitis .
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Dislocation of lensDislocation of lens
Management In anterior dislocation – remove with a vectis using
viscoelastics
In posterior disclocation- Total vitrectomy and floating the lens using heavy liquids or using a fragmentome to break the nucleus and removing the pieces.
Or leave alone if there are no complications. Spectacle correction [aphakic ]
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Removal of the lens with a Removal of the lens with a cryoprobecryoprobe
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Complicated cataract
Secondary to primary ocular disease
[Secondary to inflammatory or degenerative diseases]
Anterior or posterior uveitis : A + PSC Acute congestive glaucoma : Glaucomflecken
High myopia : Post lens opacities and PSC Hereditary retinal + vitreoretinal disorders: PSC
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Complicated cataract Secondary to primary ocular disease
Secondary to inflammatory or degenerative diseases
Anterior or posterior uveitis : A + PSC Acute congestive glaucoma : Glaucomflecken
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QuestionsQuestions
Defination of subluxation and dislocationCauses for subluxation and dislocationSigns/symptoms of subluxation and
dislocationManagement of subluxation and dislocationSigns and management of complicated
cataract
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RuebellaRuebella CataractCataract
Foetal infection from maternal viremia
Within 6/52 the virus can penetrate the lens capsule
Nuclear cataract Virus can persist in the
lens for 3 years postnatally
Microphthalmos Retinopathy [ salt and
pepper appearance]
Glaucoma
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Abnormalities of lens shapeAbnormalities of lens shape
Coloboma [ involves the iris and choroid] Anterior lenticonus Posterior lenticonus Lentiglobus
Microphakia [ Diameter is smaller than normal eg. in Lowe’s syndrome ]
Microspherophakia [ + disc like in eg. Marfans syndrome ]
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Do you have any questions ?Do you have any questions ?