SELAMAT DATANG Dr. SANTHOSH ASSISTANT PROFESSOR DEPARTMENT OF OPHTHALMOLOGY K.M.C. MANIPAL.
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Transcript of SELAMAT DATANG Dr. SANTHOSH ASSISTANT PROFESSOR DEPARTMENT OF OPHTHALMOLOGY K.M.C. MANIPAL.
SELAMAT DATANGSELAMAT DATANG Dr. SANTHOSH
ASSISTANT PROFESSORDEPARTMENT OF OPHTHALMOLOGY K.M.C. MANIPAL
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
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
Subluxation of lensSubluxation of lens
Inherited
Causes Marfan’s syndrome Weil Marchesani syndrome Homocystinuria Aniridia Hyperlysinemia Familial ectopia lentis
Subluxation of lensSubluxation of lens
Acquired
Causes Trauma
Large eye [myopia,buphthalmos]
Hypermature cataract
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
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
Dislocation of lensDislocation of lens
Complications :
Corneal endothelium touch Secondary glaucoma
Vitreous haemorrhage Retinal tear Retinal detachment Chronic uveitis .
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 ]
Removal of the lens with a Removal of the lens with a cryoprobecryoprobe
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
Complicated cataract Secondary to primary ocular disease
Secondary to inflammatory or degenerative diseases
Anterior or posterior uveitis : A + PSC Acute congestive glaucoma : Glaucomflecken
QuestionsQuestions
Defination of subluxation and dislocationCauses for subluxation and dislocationSigns/symptoms of subluxation and
dislocationManagement of subluxation and dislocationSigns and management of complicated
cataract
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
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 ]
Do you have any questions ?Do you have any questions ?