Normative data for macular perimetry using the MP-3 microperimeter in healthy individuals

Area of Science:

• Ophthalmology
• Visual Neuroscience
• Medical Imaging

Background:

• Microperimetry is vital for assessing visual function in retinal diseases.
• Establishing normal microperimetry values with the MP-3 is essential for accurate impairment assessment.
• Baseline data for macular sensitivity, age, and sex correlations are needed.

Purpose of the Study:

• Determine normal light sensitivity thresholds using the MP-3 microperimeter.
• Assess fixation stability in healthy individuals with the MP-3.
• Provide normative data for MP-3 microperimetry.

Main Methods:

• Full-threshold microperimetry with a 4-2 staircase strategy was used.
• Standard Goldmann III stimulus size and 68 test points (similar to Humphrey Field Analyzer 10-2) were employed.
• Fixation stability was recorded simultaneously, and age-related sensitivity decline was analyzed via linear regression.

Main Results:

• Global mean sensitivity was 29.01 ± 1.44 dB across 74 eyes of 37 healthy volunteers.
• Mean central sensitivity at 2° was 28.5 dB (OD) and 28.75 dB (OS).
• Age-related global sensitivity decline was observed (-0.051 dB/year OD, -0.078 dB/year OS).

Conclusions:

• MP-3 microperimetry offers automatic, accurate, and topography-specific retinal sensitivity testing.
• This study provides a normal, age-matched database for MP-3 microperimetry.
• The findings support MP-3 as a reliable tool for evaluating visual function.