VR Disorders Retinal Detachment (RD) Ayesha S Abdullah 06.02.2015.
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Transcript of VR Disorders Retinal Detachment (RD) Ayesha S Abdullah 06.02.2015.
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VR Disorders Retinal
Detachment (RD)
Ayesha S Abdullah06.02.2015
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DEVELOPMENT OF THE EYE
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What is RD?
Separation of the neurosensory retina from the retinal pigment epithelium
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TYPES
Rhegmatogenous RD Non- rhegmatogenous RD
– Exudative RD– Tractional RD
Combined Tractional Rhegmatogenous
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Epidemiology
1 in 10,000/ year Bilateral in about 10% Risk factors? An ophthalmic emergency
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RRD
Vitreo-retinal adhesions disc, ora, blood vessels & at fovea
Potential subretinal space
Some Anatomical Considerations
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RRD
RD secondary to a break in the retina
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Causes & risk factors
PVD Lattice degeneration, 8% in general
population, 40% in eyes with RD Myopia Post- Cataract surgery (pseudophakia) Trauma
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Clinical presentation –symptoms
Flashes of light Floaters Visual loss Visual field loss Usually an acute event History of predisposing factors, myopia,
cataract surgery, trauma etc
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Field loss
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Clinical examination –signs
Significantly reduced Visual acuity Anterior segment examinationPupils, (RAPD)Posterior segment examinationVitreous- tobacco dustRetinal signsIOP ( may be low)
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Clinical examination –signs
Direct Ophthalmoscopy
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Indirect Ophthalmoscopy
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Normal fundus
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Retinal detachment with tear
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RD
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RD with giant tear
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Tractional RD
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Principles of management
External temponade/ scleral buckling– Seal the break– Create a buckle– Drain the SRF (subretinal fluid)-if required
Internal temponade
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Prophylaxis of RRD
Photocoagulation of the risky lesions with laser
So patients with risk factors should be referred to an ophthalmologist
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Announcements
HW 5 risk factors for RDThree common causes of exudative
retinal detachment Last date for submission 20th Feb [email protected] Test in topics covered in 4th year
after VR finishes