Why this type of increased intracranial pressure translates into intraocular bleeding remains unclear.1 Regillo postulates that increased orbital venous pressure, which translates directly through the cavernous sinus, or compression of both the ophthalmic veins and adjacent retinochoroidal anastamoses secondary to rapid effusion of cerebrospinal fluid or blood into the optic nerve sheath could explain the phenomenon.1 Either way, it appears that an acute obstruction of the retinal venous circulation results in the rupture of superficial retinal vessels.1 Pathogenesis of vitreous haemorrhage The pathogenesis of vitreous haemorrhage has been much debated.6,7,8,9 Increased intracranial pressure may force blood into the subarachnoid space and along the optic nerve sheath into the pre-retinal space, or the sudden rise in intracranial pressure may lead to a decrease in venous return to the cavernous sinus or obstruct the retinochoroidal anastomoses and central retinal vein, culminating in venous stasis and haemorrhage. Currently, sudden spiking of intracranial pressure occurring at the time of an intracranial bleed is recognized as the primary event that precipitates the intraocular bleeding.1 Frequently, the amount of ocular hemorrhage correlates directly with the rapidity and magnitude of intracranial pressure elevation. Significant vitreous hemorrhage will occur if the blood breaks through the internal limiting membrane or the posterior hyaloid face and moves into the vitreous gel.1,3 Visual acuity is often diminished and in some cases is the first sign of trouble.3 The amount of acute vision loss is related to the extent of the bleeding.3,4 Late complications include epiretinal membrane formation and, rarely, tractional or rhegmatogenous retinal detachments.5 It is important to note that some patients suffering from ruptured intracranial aneurysms may exhibit vision loss secondary to the associated vitreous hemorrhage while not demonstrating any headache, neurological deficits or signs of meningeal irritation.2 Terson's syndrome seems to be an anomaly of adults, with at least one study documenting that the maximal incidence of intraretinal hemorrhage in children with non-abuse intracranial hemorrhage (intracranial hemorrhage not associated with shaken baby syndrome) is 8%.4 Pathophysiology The etiopathology of Terson's syndrome has been controversial since its inception.1 Early investigators believed that the resulting intraocular hemorrhage emanated from the directĭissection of subarachnoid hemorrhage down the optic nerve sheath.1 However, poor anatomical communication between the subarachnoid space of the optic nerve and the vitreous humor makes this mechanism unlikely.
Intraocular hemorrhage is seen in approximately 20% of patients with acute intracranial bleeding.1 Significant vitreous hemorrhage occurs in a smaller percentage of these patients.1,4 Although the intraocular bleeding may consist of subretinal and deep intraretinal hemorrhage, they may also lie superficially, being just under the internal limiting membrane or su bhyaloid. (biasanya perdarahan subarachnoid).1 Perdarahan subarachnoid dari aneurisma otak, khususnya aneurisma dari arteri komunikans anterior, telah digambarkan sebagai penyebab yang paling umum. and nasal subretinal Penyebab utama terjadinya Terson Sindrom bersifat Superior spontan atau bisa juga akibat perdarahan intrakranial hemorrhage with disc edema. TERSON'S SYNDROME Signs and Symptoms Sindrom Terson yang pertama kali dijelaskan oleh dokter mata dari Perancis Albert Terson di awal 1900s.1, 2 Sindrom Terson didefinisikan sebagai perdarahan intraokular terkait dengan perdarahan intrakranial akut.1-5 Pada saat ini, hubungan antara perdarahan vitreous dengan perdarahan subarachnoid akut juga sudah dapat dijelaskan.1,2 Kunci untuk mendiagnostik Terson Syndrome adalah terjadi secara bilateral, perdarahan segmen posterior yang terdapat pada beberapa intraretinal, lokasi preretinal atau intravitreal. KEPANITERAAN KLINIK ILMU KESEHATAN MATA PERIODE 29 JUNI 04 AGUSTUS 2012 FAKULTAS KEDOKTERAN UNIVERSITAS KRISTEN INDONESIA JAKARTA Simanjuntak, Sp.Mĭisusun oleh Andreas Octaviano Rainaldy 0861050149
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