dc.contributor.author | Tan, RS | |
dc.contributor.author | Guymer, RH | |
dc.contributor.author | Luu, CD | |
dc.date.accessioned | 2020-12-17T03:45:59Z | |
dc.date.available | 2020-12-17T03:45:59Z | |
dc.date.issued | 2018-05-01 | |
dc.identifier | pii: TVST-17-0609 | |
dc.identifier.citation | Tan, R. S., Guymer, R. H. & Luu, C. D. (2018). Repeatability of Retinal Sensitivity Measurements Using a Medmont Dark-Adapted Chromatic Perimeter in Healthy and Age-Related Macular Degeneration Cases. TRANSLATIONAL VISION SCIENCE & TECHNOLOGY, 7 (3), https://doi.org/10.1167/tvst.7.3.3. | |
dc.identifier.issn | 2164-2591 | |
dc.identifier.uri | http://hdl.handle.net/11343/255021 | |
dc.description.abstract | Purpose: To determine the intrasession and intersession test-retest repeatability of retinal sensitivity measurements using a dark-adapted chromatic perimeter (DACP). Methods: For intrasession testing, retinal sensitivity within the central 24° for the 505-nm stimulus was measured after 20, 30, and 40 minutes of dark adaptation (DA) and for the 625-nm stimulus was measured after the first and second 505-nm tests. For intersession testing, retinal sensitivity for both stimuli was measured after 30 minutes of DA at baseline and 1 month. The point-wise sensitivity (PWS) difference and coefficient of repeatability (CoR) of each stimulus and group were determined. Results: For intrasession testing, 10 age-related macular degeneration (AMD) and eight control subjects were recruited. The overall CoR for the 505-nm stimulus was 8.4 dB for control subjects and 9.1 dB for AMD cases, and for the 625-nm stimulus was 6.7 dB for control subjects and 9.5 dB for AMD cases. For intersession testing, seven AMD cases and 13 control subjects returned an overall CoR for the 505-nm stimulus of 8.2 dB for the control and 11.7 dB for the AMD group. For the 625-nm stimulus the CoR was 6.2 dB for the control group and 8.4 dB for the AMD group. Approximately 80% of all test points had a PWS difference of ±5 dB between the two intrasession or intersession measurements for both stimuli. Conclusions: The CoR for the DACP is larger than that reported for scotopic perimeters; however, the majority of test points had a PWS difference of ±5 dB between tests. Translational Relevance: The DACP offers an opportunity to measure static and dynamic rod function at multiple locations with an acceptable reproducibility level. | |
dc.language | English | |
dc.publisher | ASSOC RESEARCH VISION OPHTHALMOLOGY INC | |
dc.title | Repeatability of Retinal Sensitivity Measurements Using a Medmont Dark-Adapted Chromatic Perimeter in Healthy and Age-Related Macular Degeneration Cases | |
dc.type | Journal Article | |
dc.identifier.doi | 10.1167/tvst.7.3.3 | |
melbourne.affiliation.department | Ophthalmology (Eye & Ear Hospital) | |
melbourne.affiliation.department | Centre for Eye Research Australia (CERA) | |
melbourne.source.title | Translational Vision Science and Technology | |
melbourne.source.volume | 7 | |
melbourne.source.issue | 3 | |
dc.rights.license | CC BY-NC-ND | |
melbourne.elementsid | 1328704 | |
melbourne.contributor.author | Luu, Chi | |
melbourne.contributor.author | Guymer, Robyn | |
melbourne.contributor.author | Luu, Chi | |
dc.identifier.eissn | 2164-2591 | |
melbourne.accessrights | Open Access | |