| Paper Abstract and Keywords |
| Presentation |
2011-12-10 14:25
Relationship between reading performance of elderly and eye movement
Natsuko Hatsusaka, Yusuke Suzuya, Tetsuo Kawahara, Hiroshi Sasaki (KMU) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
Eye movements during reading are consisted of repetitions of saccade and fixation and function effectively. Meanwhile, it shows that reading speed decreases even in the healthy elderly due to some effects such as presbyopia. We examined a relationship between decrease of reading speed and eye movements with aging. Subjects comprised 15 adults from 21 to 60 years old with no ophthalmic diseases. Experiment1: The subjects were asked to read the clinical-used vertical text, MNREAD-J, 10 letters ×3 lines (30 letters), appeared on PC, and showed 30 times each letter size of logMAR 10 and 0.5 with keeping 30 cm distances from the text. We measured fixation time, fixation frequency, eye-movement tracking, and pupil size using Eyemark Recorder (Nac). Experiment2: The elderly tend to have low near visual acuity because of accommodation degeneration. We compared eye movements of young adult with of the elderly under a certain condition which young adult asked to reduce vision with convex lenses. The mean logMAR among the elderly was 0.13±0.11 and near visual acuity of young adult was reduced under the average. Text was reformed MNREAD-J, 20 vertical letters with logMAR 1.0 and 0.5 size, and measured in the same way as Experience 1. Reading speed decreased with aging. Fixation frequency of 50s increased compared with 20s although there was no difference in fixation time with age, which showed saccade length decreased significantly (p<0.05) and suggested that this was a main reason of decrease of reading speed in the elderly. Saccade length of young adult was significantly long compared with the elderly with the usage of convex lenses (p<0.05). Also the elderly made regressions back frequently. Decrease of reading speed with aging is attributed to reduction of saccade length not to the delay of fixation time and has something to do with factors other than degeneration of near visual acuity. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Elderly / Reading Performance / Eye Movement / Saccade Length / / / / |
| Reference Info. |
ITE Tech. Rep., vol. 35, no. 51, HI2011-91, pp. 75-79, Dec. 2011. |
| Paper # |
HI2011-91 |
| Date of Issue |
2011-12-02 (HI) |
| ISSN |
Print edition: ISSN 1342-6893 |
| Download PDF |
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| Conference Information |
| Committee |
HI |
| Conference Date |
2011-12-09 - 2011-12-10 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Okinawa Industry Support Center |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
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| Paper Information |
| Registration To |
HI |
| Conference Code |
2011-12-HI |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Relationship between reading performance of elderly and eye movement |
| Sub Title (in English) |
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| Keyword(1) |
Elderly |
| Keyword(2) |
Reading Performance |
| Keyword(3) |
Eye Movement |
| Keyword(4) |
Saccade Length |
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| 1st Author's Name |
Natsuko Hatsusaka |
| 1st Author's Affiliation |
Kanazawa Medical University (KMU) |
| 2nd Author's Name |
Yusuke Suzuya |
| 2nd Author's Affiliation |
Kanazawa Institute of Technology (KMU) |
| 3rd Author's Name |
Tetsuo Kawahara |
| 3rd Author's Affiliation |
Kanazawa Institute of Technology (KMU) |
| 4th Author's Name |
Hiroshi Sasaki |
| 4th Author's Affiliation |
Kanazawa Medical University (KMU) |
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| Speaker |
Author-1 |
| Date Time |
2011-12-10 14:25:00 |
| Presentation Time |
25 minutes |
| Registration for |
HI |
| Paper # |
HI2011-91 |
| Volume (vol) |
vol.35 |
| Number (no) |
no.51 |
| Page |
pp.75-79 |
| #Pages |
5 |
| Date of Issue |
2011-12-02 (HI) |
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