New ophthalmologic imaging techniques for detection and monitoring of neurodegenerative changes in diabetes: a systematic review

Summary Optical coherence tomography (OCT) of the retina and around the optic nerve head and corneal confocal microscopy (CCM) are non-invasive and repeatable techniques that can quantify ocular neurodegenerative changes in individuals with diabetes. We systematically reviewed studies of ocular neur...

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Veröffentlicht in:The lancet. Diabetes & endocrinology 2015-08, Vol.3 (8), p.653-663
Hauptverfasser: De Clerck, Eline E B, Dr, Schouten, Jan S A G, MD, Berendschot, Tos T J M, PhD, Kessels, Alfons G H, MD, Nuijts, Rudy M M A, Prof, Beckers, Henny J M, MD, Schram, Miranda T, PhD, Stehouwer, Coen D A, Prof, Webers, Carroll A B, Prof
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container_issue 8
container_start_page 653
container_title The lancet. Diabetes & endocrinology
container_volume 3
creator De Clerck, Eline E B, Dr
Schouten, Jan S A G, MD
Berendschot, Tos T J M, PhD
Kessels, Alfons G H, MD
Nuijts, Rudy M M A, Prof
Beckers, Henny J M, MD
Schram, Miranda T, PhD
Stehouwer, Coen D A, Prof
Webers, Carroll A B, Prof
description Summary Optical coherence tomography (OCT) of the retina and around the optic nerve head and corneal confocal microscopy (CCM) are non-invasive and repeatable techniques that can quantify ocular neurodegenerative changes in individuals with diabetes. We systematically reviewed studies of ocular neurodegenerative changes in adults with type 1 or type 2 diabetes and noted changes in the retina, the optic nerve head, and the cornea. Of the 30 studies that met our inclusion criteria, 14 used OCT and 16 used CCM to assess ocular neurodegenerative changes. Even in the absence of diabetic retinopathy, several layers in the retina and the mean retinal nerve fibre layer around the optic nerve head were significantly thinner (−5·36 μm [95% CI −7·13 to −3·58]) in individuals with type 2 diabetes compared with individuals without diabetes. In individuals with type 1 diabetes without retinopathy none of the intraretinal layer thicknesses were significantly reduced compared with individuals without diabetes. In the absence of diabetic polyneuropathy, individuals with type 2 diabetes had a lower nerve density (nerve branch density: −1·10/mm2 [95% CI −4·22 to 2·02]), nerve fibre density: −5·80/mm2 [–8·06 to −3·54], and nerve fibre length: −4·00 mm/mm2 [–5·93 to −2·07]) in the subbasal nerve plexus of the cornea than individuals without diabetes. Individuals with type 1 diabetes without polyneuropathy also had a lower nerve density (nerve branch density: −7·74/mm2 [95% CI −14·13 to −1·34], nerve fibre density: −2·68/mm2 [–5·56 to 0·20]), and nerve fibre length: −2·58 mm/mm2 [–3·94 to −1·21]). Ocular neurodegenerative changes are more evident when diabetic retinopathy or polyneuropathy is present. OCT and CCM are potentially useful, in addition to conventional clinical methods, to assess diabetic neurodegenerative changes. Additional research is needed to determine their incremental benefit and to standardise procedures before the application of OCT and CCM in daily practice.
doi_str_mv 10.1016/S2213-8587(15)00136-9
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We systematically reviewed studies of ocular neurodegenerative changes in adults with type 1 or type 2 diabetes and noted changes in the retina, the optic nerve head, and the cornea. Of the 30 studies that met our inclusion criteria, 14 used OCT and 16 used CCM to assess ocular neurodegenerative changes. Even in the absence of diabetic retinopathy, several layers in the retina and the mean retinal nerve fibre layer around the optic nerve head were significantly thinner (−5·36 μm [95% CI −7·13 to −3·58]) in individuals with type 2 diabetes compared with individuals without diabetes. In individuals with type 1 diabetes without retinopathy none of the intraretinal layer thicknesses were significantly reduced compared with individuals without diabetes. In the absence of diabetic polyneuropathy, individuals with type 2 diabetes had a lower nerve density (nerve branch density: −1·10/mm2 [95% CI −4·22 to 2·02]), nerve fibre density: −5·80/mm2 [–8·06 to −3·54], and nerve fibre length: −4·00 mm/mm2 [–5·93 to −2·07]) in the subbasal nerve plexus of the cornea than individuals without diabetes. Individuals with type 1 diabetes without polyneuropathy also had a lower nerve density (nerve branch density: −7·74/mm2 [95% CI −14·13 to −1·34], nerve fibre density: −2·68/mm2 [–5·56 to 0·20]), and nerve fibre length: −2·58 mm/mm2 [–3·94 to −1·21]). Ocular neurodegenerative changes are more evident when diabetic retinopathy or polyneuropathy is present. OCT and CCM are potentially useful, in addition to conventional clinical methods, to assess diabetic neurodegenerative changes. Additional research is needed to determine their incremental benefit and to standardise procedures before the application of OCT and CCM in daily practice.</description><identifier>ISSN: 2213-8587</identifier><identifier>EISSN: 2213-8595</identifier><identifier>DOI: 10.1016/S2213-8587(15)00136-9</identifier><identifier>PMID: 26184671</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Adult ; Cornea - pathology ; Corneal Diseases - complications ; Corneal Diseases - pathology ; Diabetes Mellitus, Type 1 - complications ; Diabetes Mellitus, Type 2 - complications ; Diabetic Retinopathy - complications ; Diabetic Retinopathy - pathology ; Endocrinology &amp; Metabolism ; Eye Diseases - complications ; Eye Diseases - pathology ; Female ; Humans ; Male ; Microscopy, Confocal - methods ; Middle Aged ; Neurodegenerative Diseases - complications ; Neurodegenerative Diseases - pathology ; Optic Nerve Diseases - complications ; Optic Nerve Diseases - pathology ; Other ; Retina - pathology ; Tomography, Optical Coherence - methods</subject><ispartof>The lancet. 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Diabetes &amp; endocrinology</jtitle><addtitle>Lancet Diabetes Endocrinol</addtitle><date>2015-08-01</date><risdate>2015</risdate><volume>3</volume><issue>8</issue><spage>653</spage><epage>663</epage><pages>653-663</pages><issn>2213-8587</issn><eissn>2213-8595</eissn><abstract>Summary Optical coherence tomography (OCT) of the retina and around the optic nerve head and corneal confocal microscopy (CCM) are non-invasive and repeatable techniques that can quantify ocular neurodegenerative changes in individuals with diabetes. We systematically reviewed studies of ocular neurodegenerative changes in adults with type 1 or type 2 diabetes and noted changes in the retina, the optic nerve head, and the cornea. Of the 30 studies that met our inclusion criteria, 14 used OCT and 16 used CCM to assess ocular neurodegenerative changes. Even in the absence of diabetic retinopathy, several layers in the retina and the mean retinal nerve fibre layer around the optic nerve head were significantly thinner (−5·36 μm [95% CI −7·13 to −3·58]) in individuals with type 2 diabetes compared with individuals without diabetes. In individuals with type 1 diabetes without retinopathy none of the intraretinal layer thicknesses were significantly reduced compared with individuals without diabetes. In the absence of diabetic polyneuropathy, individuals with type 2 diabetes had a lower nerve density (nerve branch density: −1·10/mm2 [95% CI −4·22 to 2·02]), nerve fibre density: −5·80/mm2 [–8·06 to −3·54], and nerve fibre length: −4·00 mm/mm2 [–5·93 to −2·07]) in the subbasal nerve plexus of the cornea than individuals without diabetes. Individuals with type 1 diabetes without polyneuropathy also had a lower nerve density (nerve branch density: −7·74/mm2 [95% CI −14·13 to −1·34], nerve fibre density: −2·68/mm2 [–5·56 to 0·20]), and nerve fibre length: −2·58 mm/mm2 [–3·94 to −1·21]). Ocular neurodegenerative changes are more evident when diabetic retinopathy or polyneuropathy is present. OCT and CCM are potentially useful, in addition to conventional clinical methods, to assess diabetic neurodegenerative changes. Additional research is needed to determine their incremental benefit and to standardise procedures before the application of OCT and CCM in daily practice.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>26184671</pmid><doi>10.1016/S2213-8587(15)00136-9</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record>
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identifier ISSN: 2213-8587
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subjects Adult
Cornea - pathology
Corneal Diseases - complications
Corneal Diseases - pathology
Diabetes Mellitus, Type 1 - complications
Diabetes Mellitus, Type 2 - complications
Diabetic Retinopathy - complications
Diabetic Retinopathy - pathology
Endocrinology & Metabolism
Eye Diseases - complications
Eye Diseases - pathology
Female
Humans
Male
Microscopy, Confocal - methods
Middle Aged
Neurodegenerative Diseases - complications
Neurodegenerative Diseases - pathology
Optic Nerve Diseases - complications
Optic Nerve Diseases - pathology
Other
Retina - pathology
Tomography, Optical Coherence - methods
title New ophthalmologic imaging techniques for detection and monitoring of neurodegenerative changes in diabetes: a systematic review
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