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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.
VR Disorders Retinal
Detachment (RD)
Ayesha S Abdullah06.02.2015
DEVELOPMENT OF THE EYE
What is RD?
Separation of the neurosensory retina from the retinal pigment epithelium
TYPES
Rhegmatogenous RD Non- rhegmatogenous RD
– Exudative RD– Tractional RD
Combined Tractional Rhegmatogenous
Epidemiology
1 in 10,000/ year Bilateral in about 10% Risk factors? An ophthalmic emergency
RRD
Vitreo-retinal adhesions disc, ora, blood vessels & at fovea
Potential subretinal space
Some Anatomical Considerations
RRD
RD secondary to a break in the retina
Causes & risk factors
PVD Lattice degeneration, 8% in general
population, 40% in eyes with RD Myopia Post- Cataract surgery (pseudophakia) Trauma
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
Field loss
Clinical examination –signs
Significantly reduced Visual acuity Anterior segment examinationPupils, (RAPD)Posterior segment examinationVitreous- tobacco dustRetinal signsIOP ( may be low)
Clinical examination –signs
Direct Ophthalmoscopy
Indirect Ophthalmoscopy
Normal fundus
Retinal detachment with tear
RD
RD with giant tear
Tractional RD
Principles of management
External temponade/ scleral buckling– Seal the break– Create a buckle– Drain the SRF (subretinal fluid)-if required
Internal temponade
Prophylaxis of RRD
Photocoagulation of the risky lesions with laser
So patients with risk factors should be referred to an ophthalmologist
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