| Visual Field in Normal Korean Subjects: Traquair's "Hill of Vision". |
|
Seung Min Ha, Sung Pyo Hong, Soon Ho Han |
|
Department of Ophthalmology, School of medicine, Kyungpook national University, Taegu, Korea. sphong@knu.ac.kr |
| 한국 정상인의 시야검사 -Traquair`s "Hill of Vision"의 형태학적 특징 |
|
하승민 ( Seung Min Ha ) , 홍승표 ( Sung Pyo Hong ) , 한순호 ( Soon Ho Han ) |
|
|
|
|
| Abstract |
PURPOSE
To investigate Traquair's "hill of vision" of the normal Korean subjects in the photopic and mesopic background. METHODS: Automated perimetry was performed in 152 normal subjects using Humphrey 24-2 SITA standard (photopic background, n=100) and Octopus G1 full threshold (mesopic background, n=52) program. We calculated and compared the threshold sensitivity and sensitivity deviation of the visual field by the fashion of the superior/inferior hemi-field, temporal/nasal hemi-field, quadrant, and 5 degrees ring. RESULTS: In Humphrey, average mean deviation (MD) and pattern standard deviation (PSD) were -1.22+/-0.86 and 1.43+/-0.33 dB, respectively. In Octopus, average MD and PSD were -3.39+/-1.39 and 1.67+/-0.23 dB, respectively. In both Humphrey and Octopus, the average threshold sensitivity of the inferior hemi-field was slightly higher than that of the superior hemi-field. There was no significant difference between the nasal and temporal hemi-field. The sensitivity was decreased with increasing the eccentricity. In the deviation map of the Humphrey, there were no significant differences in the comparisons of the hemifield, quadrant, and 5 degrees ring. In Octopus, there were no significant differences in the comparisons of the hemifield and quadrant. However, the sensitivity deviation was peaked at the fixation point and decreased with increasing the eccentricity. CONCLUSIONS: These results indicate that the normal Korean subjects may have lower sensitivity than the normal age-matched controls of the automated perimetry, especially in the Octopus perimetry. In addition, this study suggests that the shape of the Traquair's "hill of vision" in the normal Korean subjects might be similar to that of the normal age-matched controls in Humphrey perimetry which was performed in photopic background, but it might be flatter in Octopus perimetry which was performed in mesopic background. |
| Key Words:
Hill of vision;Mesopic;Photopic;Visual field |
|
PDF Links
Download Citation
