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[Normal values of retinal sensitivity determined by macular integrity assessment]
Atsushi Fujiwara1, Chieko Shiragami2, Saki Manabe2
1Department of Ophthalmology, Kagawa University Faculty of Medicine. atsushi@okayama-u.ac.jp
Nippon Ganka Gakkai Zasshi
|February 11, 2014
Summary
Macular sensitivity in healthy eyes declines with age, decreasing by approximately 0.6 dB per decade. Factors like aging and axial length significantly impact this decline, with central vision being less sensitive than peripheral vision.
Area of Science:
- Ophthalmology
- Vision Science
- Retinal Imaging
Context:
- Macular sensitivity is crucial for detailed vision.
- Understanding age-related changes in macular sensitivity is important for early detection of visual impairments.
- The Macular Integrity Assessment (MAIA) provides a quantitative measure of macular function.
Purpose:
- To assess macular sensitivity across a wide age range in healthy individuals using the MAIA device.
- To identify factors influencing macular sensitivity, including age and axial length.
- To analyze sensitivity variations at different retinal locations.
Summary:
- A study of 120 healthy eyes revealed that macular sensitivity decreases significantly with age, particularly after 60 years.
- Sensitivity declines by about 0.6 dB per decade, influenced by aging and axial length.
- The central retinal area showed lower sensitivity compared to surrounding regions.
Impact:
- Provides normative data for macular sensitivity in a healthy population.
- Highlights the impact of aging and axial length on visual function.
- Suggests potential for MAIA in monitoring age-related macular health.
