Related Experiment Videos
[The relationship between statokinetic dissociation (SKD) and spatial summation--physiologic SKD in normal persons]
S Osako1, M Osako, K Hashimoto
1Department of Ophthalmology, Tokyo Medical College, Kasumigaura Hospital, Japan.
Nippon Ganka Gakkai Zasshi
|March 1, 1997
Summary
Statokinetic dissociation (SKD) and spatial summation were measured in normal individuals. While SKD varied by visual field meridian and target size, no clear relationship was found with spatial summation.
Area of Science:
- Ophthalmology and Visual Neuroscience
- Human Visual Perception
Context:
- Investigating the complex interplay between visual field parameters in healthy individuals.
- Understanding the normative ranges for statokinetic dissociation (SKD) and spatial summation using standard perimetric techniques.
Purpose:
- To determine the relationship between physiologic statokinetic dissociation (SKD) and spatial summation in normal subjects.
- To analyze how different kinetic targets (III 1b, III 4c) and Goldmann sizes (I, III, V) influence these visual parameters.
Summary:
- Statokinetic dissociation (SKD) and spatial summation were measured in 13 normal subjects using the Humphrey Field Analyzer.
- SKD values for targets III 1b and III 4c were 18.8 ± 3.4 and 20.1 ± 5.4 degrees, respectively.
- Spatial summation (SS) values for SS (III-I) and SS (V-III) were 9.8 ± 0.7 dB and 4.7 ± 0.9 dB, respectively, with no obvious correlation between SKD and spatial summation.
Impact:
- Highlights variations in SKD across different visual field meridians and targets, influenced by retinal sensitivity.
- Provides normative data for SKD and spatial summation, crucial for clinical interpretation in ophthalmology.
- Suggests that age may influence SKD, but the direct link to spatial summation requires further investigation.