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Cystoid macular edema in retinitis pigmentosa patients without associated macular thickening. 2013

Ian R Gorovoy, and Denise S Gallagher, and Andrew W Eller, and Vera A Mayercik, and Thomas R Friberg, and Joel S Schuman
University of California, San Francisco, Department of Ophthalmology, San Francisco, California, USA.

OBJECTIVE To describe the occurrence of cystoid macular edema (CME) in the setting of central foveal thickness (CFT) under 250 μm as measured by optical coherence tomography (OCT) in patients with retinitis pigmentosa (RP). METHODS Stratus OCT was used to measure CFT in a total of 90 eyes from 46 patients with RP. Cross-sectional OCT images were also evaluated for CME, which was defined as cystoid changes in the macula seen on at least two linear scans. RESULTS CME was identified in 13 of the 46 patients or in 22 of 90 eyes by OCT. In eyes with macular edema, CFT ranged from 224 to 718 μm (mean = 339 ± 137 μm). In eyes without macular edema, CFT ranged from 99 to 273 μm (mean = 184 ± 40 μm). Bilateral CME occurred in 9 of 13 patients (69%). CFT was considered "normal" in 7 of the 22 eyes (32%) with CME. Two patients had bilateral CME with normal CFTs, under 250 μm. CONCLUSIONS We demonstrate the occurrence of CME in RP patients without associated thickening, which has not been described. This concept likely is applicable to other diseases with retinal thinning.

UI MeSH Term Description Entries
D007429 Intraocular Pressure The pressure of the fluids in the eye. Ocular Tension,Intraocular Pressures,Ocular Tensions,Pressure, Intraocular,Pressures, Intraocular,Tension, Ocular,Tensions, Ocular
D008266 Macula Lutea An oval area in the retina, 3 to 5 mm in diameter, usually located temporal to the posterior pole of the eye and slightly below the level of the optic disk. It is characterized by the presence of a yellow pigment diffusely permeating the inner layers, contains the fovea centralis in its center, and provides the best phototropic visual acuity. It is devoid of retinal blood vessels, except in its periphery, and receives nourishment from the choriocapillaris of the choroid. (From Cline et al., Dictionary of Visual Science, 4th ed) Lutea, Macula,Luteas, Macula,Macula Luteas
D008269 Macular Edema Fluid accumulation in the outer layer of the MACULA LUTEA that results from intraocular or systemic insults. It may develop in a diffuse pattern where the macula appears thickened or it may acquire the characteristic petaloid appearance referred to as cystoid macular edema. Although macular edema may be associated with various underlying conditions, it is most commonly seen following intraocular surgery, venous occlusive disease, DIABETIC RETINOPATHY, and posterior segment inflammatory disease. (From Survey of Ophthalmology 2004; 49(5) 470-90) Central Retinal Edema, Cystoid,Cystoid Macular Edema,Macular Edema, Cystoid,Cystoid Macular Dystrophy,Cystoid Macular Edema, Postoperative,Irvine-Gass Syndrome,Macular Dystrophy, Dominant Cystoid,Edema, Cystoid Macular,Edema, Macular,Irvine Gass Syndrome,Syndrome, Irvine-Gass
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012174 Retinitis Pigmentosa Hereditary, progressive degeneration of the retina due to death of ROD PHOTORECEPTORS initially and subsequent death of CONE PHOTORECEPTORS. It is characterized by deposition of pigment in the retina. Pigmentary Retinopathy,Tapetoretinal Degeneration,Pigmentary Retinopathies,Retinopathies, Pigmentary,Retinopathy, Pigmentary,Tapetoretinal Degenerations
D014794 Visual Fields The total area or space visible in a person's peripheral vision with the eye looking straightforward. Field, Visual,Fields, Visual,Visual Field
D041623 Tomography, Optical Coherence An imaging method using LASERS that is used for mapping subsurface structure. When a reflective site in the sample is at the same optical path length (coherence) as the reference mirror, the detector observes interference fringes. OCT Tomography,Optical Coherence Tomography,Coherence Tomography, Optical,Tomography, OCT

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