| Quantitative Analysis of Changes of Automated Perimetric Thresholds after Pupillary Dilation and induced Myopia in Normal Subjects. |
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Hyun Jun Park, Dong Ho Yun |
1Department of Ophthalmology, College of Medicine, University of Ulsan, Asan Medical Center, Seoul, Korea.
2Department of Ophthalmology, Seoul National University, Seoul, Korea. |
| 정상인에서 산동과 인위적 근시유발시 망막 광역치의 변화의 정량분석 |
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박현준(Hyun Jun Park),윤동호(Dong Ho Yun) |
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| Abstract |
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We quantitatively analyzed the changes of the(retinal) threshold sensitivities between normal status and dilated emmetropic status, and between dilated emmetropic status and -1.0D induced myopic status. Three consecutive visual field examinations by Humphrey Field Analyzer C-30-2 threshold test and STATPAC program were performed in 36 eyes of 21 normal subjects who ranged in age from 23 to 40 years. The results were as follows: 1) There was a statistically significant decrease (0.87 +/- 0.91dB) in the mean threshold sensitivity within the central 30 degrees at the dilated emmetropic status(27.90dB) as compared with the normal status(28.77dB) (p=0.0001). 2) There was a statistically significant decrease(0.99 +/- 0.61dB) at -1.0D induced myopic status(26.91dB) as compared with the dilated emmetropic status(27.90dB) (p=0.0001). 3) After dilation, the mean threshold sensitivity between 20 and 30 degrees of field showed statistically significant decrease as compared with thosE' within the central 20 degrees of visual field(p<0.05). In case of -1.0D induced myopia, there were uniform decrease in the mean threshold sensitivities within the central 30 degrees of visual field(p>0.05). Therefore, we emphasize the importance of consistent pupillary size and correct refractive state in performing the serial automated visual field tests. |
| Key Words:
Dilation;Induced myopia;Pupil size;Refractive state;Threshold sensitivity |
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