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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Pomati, Simone Mariani, Claudio Cigada, Mario Ramolfo, Paola Staurenghi, Giovanni Giani, Andrea Marziani, Ermengarda |
| Description | Country affiliation: Italy Author Affiliation: Marziani E ( Eye Clinic, Department of Biomedical and Clinical Sciences Luigi Sacco, University of Milan, Milan, Italy.) |
| Abstract | PURPOSE: To evaluate differences between the retinal nerve fiber layer (RNFL) thickness and RNFL + ganglion cell layer (GCL) thickness in patients affected by Alzheimer's disease (AD) and healthy patients using spectral-domain optical coherence tomography (SD-OCT). METHODS: This was a case-control prospective study. Twenty-one AD patients and 21 healthy subjects underwent neurological examination, clock-drawing test (CDT), Mini Mental State Examination (MMSE), and comprehensive ophthalmic evaluation with visual acuity. SD-OCT examination was performed using Spectralis and RTVue-100. An RNFL thickness map was obtained using the Spectralis volume protocol with 19 lines on the 30° field centered on the macula. On each B-scan, the outer RNFL limit was manually set. Statistical analysis was performed to assess interoperator RNFL evaluation thickness. An RNFL+GCL thickness map was obtained using the RTVue-100 MM6 protocol. Maps were divided into the nine ETDRS subfields and each map value in every area was evaluated. A single eye from each patient was randomly chosen to perform the analysis. Differences between AD and healthy subjects were assessed. RESULTS: The two study groups were age and sex matched. MMSE results were 19.9 ± 3.1 and 27.9 ± 1.3, respectively (P < 0.001). There was good agreement in the manual delimitation of the RNFL layer. There was a significant difference in the thickness of both the RNFL and the RNFL+GCL in all examined fields. For example, in the inferior internal subfield, the RNFL thickness was 28.1 ± 3.1 µm for AD patients and 32.6 ± 3.8 µm for healthy subjects (P < 0.001). CONCLUSIONS: These results indicate that RNFL and RNFL+GCL thickness measurements are reduced in AD patients compared with healthy subjects. This finding may represent a useful element for the diagnosis and follow-up of this pathology. |
| ISSN | 01460404 |
| e-ISSN | 15525783 |
| Journal | Investigative Opthalmology & Visual Science |
| Issue Number | 9 |
| Volume Number | 54 |
| Language | English |
| Publisher | Association for Research in Vision and Ophthalmology |
| Publisher Date | 2013-09-05 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Alzheimer Disease Complications Nerve Fibers Pathology Optic Disk Optic Nerve Diseases Retinal Ganglion Cells Tomography, Optical Coherence Case-control Studies Diagnosis, Differential Etiology Prospective Studies Severity Of Illness Index Comparative Study Discipline Ophthalmology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ophthalmology Sensory Systems Cellular and Molecular Neuroscience |
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