Related Experiment Videos
Presumed interference colours at the level of the human anterior lens capsule
Y Nakashima1, F Yoshitomi, S Amano
1Nakashima Eye Clinic, Fukuoka, Japan.
Purpose:
To assess the incidence and related factors of the presumed interference colour phenomenon at the anterior lens capsule.
Methods:
In 274 eyes of 137 normal subjects, ranging in age from 4 to 83 years old (50.1 +/- 24.9 years, mean +/- standard deviation), the anterior lens capsule was observed with slit-lamp microscopy under specular conditions to assess the presence and degree of presumed interference colours.
Results:
The colouring phenomenon, which was thought to be relevant to the interference phenomenon induced at the level of the anterior lens capsule, was found in 67.5% of eyes. Typically, there was a colour spectrum with a greenish tint in the central area and a reddish tint at the periphery, which coincided with the area of capsular shagreen. Multiple regression analysis revealed a signigificant positive correlation between the degree of the interference colour phenomenon and the age of the subjects (r = 0.45, p < 0.0001, R2 = 0.713).
Conclusion:
Presumed interference colours are frequently seen at the human anterior lens capsule. Interference colours and capsular shagreen seem to reflect age-related changes in the lens.