Density of the Iris
Outline of the section: While color of the iris is indicative of hereditary traits and of the degree of purity or impurity of blood and tissues, density is a measure of that which we call vitality, tone, power of resistance, recuperative power, etc. More info here.
Before proceeding with the study of this subject let me explain what is meant by density. When the structures composing the stroma and surface layer of the iris are normally developed and arranged in an orderly manner so that they lie in smooth, even layers, like the fibres in a perfectly woven fabric, and when the layer of endothelial cells covering the surface of the stroma is intact, then the iris is of normal density and presents a surface of crystalline clearness with the beautiful, glossy appearance of topaz or mother-of-pearl.
While such an iris is the rule among animals living in freedom, it is nowadays very rarely found in human beings.* It is sometimes seen in cats' eyes, but never in dogs', probably because the cat stubbornly adheres to its natural modes of living, while the dog readily adapts himself to the unnatural habits of living of his master and is, therefore, more prone to disease than any other animal excepting man and the hog. Burton Hendricks, the cancer expert, claims that the lap dogs of Fifth Avenue are afflicted with cancer as frequently as are their luxury loving owners.
*"The surface endothelhim is very perishable, being demonstrable only in fresh specimens obtained from young individuals, and usually with much greater difficulty in the human than in the animal iris." (From a standard work on anatomy.)
In an iris of defective density the nerve and muscle fibres in the surface layer and stroma are unevenly developed and arranged--some swollen, others shrunken or entirely obliterated, all crooked, warped and intermingled. In some areas the fibres are massed into bundles; in others, entirely displaced so that the darker underlying layers become revealed, giving the appearance of dark shadings and black spots.
Fig. 6. The Four Densities.
In some instances the displacement is so deep that actual holes are formed exposing the dark pigment layer. This is often the case after serious wounds and fractures entailing great loss of tissues. Such a hole in the iris was the dark spot in the owl's eye which led the boy Peckzely to the discovery of this wonderful science of Iridology.
An iris of defective density presents in color, as well as in grain and texture, an uneven, mottled appearance. As every sign, mark or discoloration in the iris stands for some abnormal condition in the body, it is clear why defective density indicates lowered vitality and weakened resistance.
We judge the firmness and textile strength of a piece of wood, metal or woven fabric by the fineness and smoothness of grain and fibre. Correspondingly, we recognize in coarseness, looseness and irregular arrangement of fibre the unmistakable marks of inferiority and lack of textile strength and stamina.
Oak and mahogany have a finer grain than poplar or willow; steel is finer and denser in texture than iron.
Similarly, a fine, dense iris indicates density and firmness of tissues in the body, and vice versa. In other words, the degree of density of the iris corresponds to the degree of vitality and to the general tone of the system. Since density refers only to the woof of the iris, the scurf rim, medicine signs, lymphatic rosary and itch spots are not taken into consideration in determining the degree of density.
Significance of Density
Since abnormal color pigments in the iris represent encumbrances of morbid and foreign matter in the system, and since density denotes the degree of integrity and tone of the tissues, color and density combined indicate the degree of--
(a) Stamina and endurance;
(b) Vital resistance to disease;
(c) Recuperative power and response to treatment;
(d) Expectancy of life.
We judge the quality of the constitution of an individual according to the absence or presence in the iris of the various hereditary and acquired taints, encumbrances and defects.
The life expectancy of an individual can be estimated by the quality of his constitution as revealed in the iris. Frequently, however, individuals with frail constitutions carefully nurse their health and outlive those with vigorous constitutions who recklessly squander their vitality. According to the showing in the iris of color, density and hereditary lesions, we distinguish four types of constitutions. The ideal, as before stated, we do not find in human beings. We therefore have not given it a place in the drawing (Fig. 6) which illustrates the four degrees of density.