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Abstract #14835 Published in IGR 8-4
Neurosensory detachment arising from a fractured inner-limiting membrane secondary to chronically elevated intraocular pressure
Pilon A; Newman T; Messner LVOptometry and Vision Science 2006; 83: 415-420
Diffuse optic nerve excavation and focal rim loss mimicking an optic pit have never been reported to predispose patients to serous detachments despite their relative frequency among patients with glaucoma. Recent reports of idiopathic macular schisis detachments occurring in the setting of elevated intraocular pressure without evidence of a contributing comorbidity have caused some to speculate that alternative mechanisms exist with the capacity to engender these retinal complications. Experimental simian research has unveiled the capacity of chronically elevated intraocular pressure to yield conduction portals between the posterior hyaloid face and the subretinal space by inducing microscopic fractures in the inner-limiting membrane. To our knowledge, this is the first case report providing objective evidence of an idiopathic neurosensory detachment resulting from a fractured inner-limiting membrane arising in the setting of chronically elevated intraocular pressures. CASE REPORT: A 34-year old black man presented with transient eye pain and fluctuating vision in his left eye with his current spectacle prescription. A 2-year history of right eye blindness from glaucoma was uncovered. Funduscopic evaluation revealed a broad neurosensory detachment in the setting of an excavated optic nerve in the patient's right eye. Optical coherence tomography confirmed the hydrodynamic separation of the sensory retina from the retinal pigmented epithelium and permitted visualization of a fractured inner-limiting membrane with a contiguous communication between the posterior hyaloid face and the subretinal space at the nasal limit of the detachment. Fluorescein angiography studies identified the absence of chorioretinal vascular compromise contributing to the minimal expansion of the dye into serous cavity late into the study. No optic pit was discernible using optical coherence tomography imaging or fluorescein angiography. CONCLUSIONS: Although glaucomatous damage of the optic nerve has rarely been shown to predispose an individual to serous complications within the macula, recent reports attest to its pathogenic capacity and propose a theory to explain their infrequent clinical coexistence. This case provides additional support for the mounting evidence to support the role of a compromised inner-limiting membrane in inducing a macular detachment in the setting of chronically elevated intraocular pressure without evidence of preexisting optic pits.
Dr. A. Pilon, Southern California, College of Optometry, 2575 Yorba Linda Blvd., Fullerton, CA 92831, USA
Classification:
2.14 Optic disc (Part of: 2 Anatomical structures in glaucoma)
2.13 Retina and retinal nerve fibre layer (Part of: 2 Anatomical structures in glaucoma)
6.9.2 Optical coherence tomography (Part of: 6 Clinical examination methods > 6.9 Computerized image analysis)
