First Author: L.Herrera SPAIN
Co Author(s): N. Cruz K. Zabadani J. Ascaso C. Caramello I. Pinilla C. Almenara 0 0 0 0 0 0 0 0 0
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To study the role of optical coherence tomography (OCT) as a progression marker in patients with mild cognitive impairment (MCI) and Alzheimer’s disease (AD).
Department of Ophthalmology, University Clinic Hospital, Zaragoza, Spain
We studied 42 eyes of 21 patients fulfilling criteria for AD, and 36 eyes of 18 patients fulfilling criteria for MCI. In these two groups, we evaluated cognitive impairment through the Mini-Mental State Examination (MMSE), the verbal fluency test (VFT) and the clock test (CT) and we measured peripapillary retinal nerve fiber layer (RNFL) thickness, and macular volume and thickness using OCT.
There is a significant correlation between the decrease in peripapillary RNFL thickness, macular volume and macular thickness and the severity of the cognitive impairment measured by the three neuro-psychological tests (p=0.00).
The reduction in peripapillary and macular thickness and macular volume is related to the severity of cognitive impairment. Thus, OCT can be used for the diagnosis of AD and MCI (especially in the diagnosis of early- stage AD), as well as to evaluate cognitive impairment progression