[A real-time analysis of 133 normal lens images by a computer].
According to the theory that the light scattering of the lens is correlated with the lens density, we designed a computerized system for the real-time analysis of the lens image. By measurement of the gray scale value of the lens optical section, the lens density is measured objectively and numerically. With the help of the system, 133 normal lens images were investigated. From the analysis of various age groups, we found that the grey scale values of the anterior cortex, posterior cortex and nucleus increase with the increase of age (P < 0.01), the grey scale values of the anterior and posterior cortex are significantly higher than the value of the nucleus (P < 0.05), but there is no significant difference between the values of the anterior and posterior cortex (P > 0.05), and there is also no significant difference in the comparisons of the grey scale values of the respective corresponding lens areas between the male and female.
Hu
Y
Y
Department of Ophthalmology, Navy General Hospital, Beijing.
Liu
A
A
Cai
X
X
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D003720:Densitometry / Q000379:methods; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007904:Lens Cortex, Crystalline / Q000502:physiology*; D007907:Lens Nucleus, Crystalline / Q000502:physiology*; D008297:Male; D008875:Middle Aged