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Table 1 Studies on OCT parameters in patients with AD, MCI and preclinical AD

From: Advances in retina imaging as potential biomarkers for early diagnosis of Alzheimer’s disease

Authors

Year of publication

Layer

Subjects

Alteration

Parisi et al. [40]

2001

pRNFL

AD

Thinning

Iseri et al. [41]

2006

pRNFL, mRNFL

AD

Thinning

Berisha et al. [42]

2007

pRNFL

AD

Thinner in the superior quadrant

Lu et al. [43]

2010

pRNFL

AD

Thinner in the superior and inferior quadrants

Moschos et al. [44]

2012

pRNFL

AD

Thinning

Kirbas et al. [45]

2013

pRNFL

AD

Thinner in the superior quadrant

Marziani E et al. [46]

2013

mRNFL

mRNFL + GCL

AD

Thinning

Garcia-Martin et al. [47]

2016

pRNFL, mRNFL GCL, IPL, INL, OPL, ONL, RPE

AD

Thinner pRNFL, mRNFL, GCL, and IPL

Gharbiya et al. [48]

2014

pRNFL

AD

No difference

Larrosa et al. [49]

2014

pRNFL

AD

Thinning except the nasal quadrant.

Kromer et al. [50]

2014

pRNFL

AD

Thinner in the nasal superior sector

Polo V et al. [51]

2017

pRNFL

AD

Thinner in the superior and inferior quadrants.

Salobrar-Garcia et al. [52]

2015

pRNFL, mRNFL

AD

Thinner mRNFL

Eraslan et al. [53]

2015

pRNFL, GCC

AD

Thinning

La Morgia et al. [54]

2016

pRNFL

AD

Thinning

Cunha et al. [55]

2017

pRNFL

AD

Thinner in the temporal superior quadrants and globally

Liu et al. [56]

2015

pRNFL

AD

Mild and moderate AD had thinner pRNFL in the superior quadrant. Severe AD had thinner pRNFL in the superior and inferior quadrants.

Ferrari L et al. [57]

2017

pRNFL, pGC-IPL

AD

MCI

No difference in mild AD. Moderate AD had thinner pRNFL and pGC-IPL. MCI had thinner pRNFL.

Paquet et al. [58]

2007

pRNFL

AD

MCI

Thinning

Kesler et al. [59]

2011

pRNFL

AD

MCI

AD had thinner pRNFL in the superior and inferior quadrants. MCI had thinner pRNFL only in the inferior quadrant.

Ascaso et al. [60]

2014

pRNFL

AD

MCI

AD had thinner pRNFL in all sectors. MCI had thinner pRNFL in all sectors except the temporal quadrant.

Gao et al. [61]

2015

pRNFL

AD

MCI

Thinning

Oktem et al. [62]

2015

pRNFL

AD

MCI

Thinning

Cheung et al. [63]

2015

pRNFL, GC-IPL

AD

MCI

AD had thinner pRNFL in the superior quadrant and thinner mGC-IPL in all sectors.

MCI had thinner mGC-IPL in the majority of sectors.

Shao et al. [64]

2018

pRNFL, GC-IPL

AD

MCI

Thinning

Almeida et al. [65]

2019

pRNFL, mRNFL

MCI

Thinner mRNFL, mGC-IPL and mGCC

Santos et al. [66]

2018

pRNFL, mRNFL, GCL, IPL, OPL, INL, ONL

Preclinical AD

Thinner mRNFL, ONL and IPL

López-Cuenca et al. [67]

2020

pRNFL, mRNFL, GCL, IPL, INL, OPL, ONL, RPE

Preclinical AD

Thinner mRNFL, IPL, INL and OPL

Snyder et al. [68]

2016

pRNFL, mRNFL, GCL, IPL, INL, OPL, ONL,

Preclinical AD

Thicker IPL

van de Kreeke et al. [69]

2019

pRNFL, mRNFL, GCL, IPL,

Preclinical AD

No difference

van de Kreeke et al. [70]

2020

pRNFL, mRNFL, GCL, IPL,

Preclinical AD

No difference in the rate of change of any retinal layers

  1. OCT optical coherence tomography; AD Alzheimer’s disease; MCI mild cognitive impairment; pRNFL peripapillary retinal nerve fiber layer; mRNFL macular retinal nerve fiber layer; GCL ganglion cell layer; IPL inner plexiform layer; GC-IPL ganglion cell-inner plexiform layer; pGC-IPL peripapillary ganglion cell-inner plexiform layer; mGCC macular ganglion cell complex; INL inner nuclear layer; OPL outer plexiform layer; ONL outer nuclear layer; RPE retinal pigment epithelium