Anisolabis Annulipes

ANISOLABIS ANNULIPES, earwig, an insect of the order Orthoptera, is an intermediate host for the rat tapeworm - Hymenolepis diminuta. Infection of the earwig with the parasite occurs in the same way as with Akis spinosa (see). ANISOMETROPIA (from Greek anisos-unequal, metron-measure and opsis-vision), difference in refraction of both eyes. While mild degrees of A. are very common, high degrees of A. are much rarer, usually accompanied by disorders of binocular depth perception. Types of A. can be very diverse: either one eye is emmetropic and the other is ametropic (with some refraction anomaly), or both eyes are ametropic but with different types of A. and degrees; here all possible combinations can occur. If one eye is emmetropic (or slightly hypermetropic) and the other is myopic by 3-4 D, then the patient will usually use the first eye for distance and the second for close work. Since even a small difference in refraction of both eyes cannot be equalized by uneven accommodation (as the latter in both eyes, due to uniform innervation, is always observed to the same degree), theoretically in cases of A. full correction of both eyes is required. In practice, however, it has been noted that if the difference in refraction of both eyes exceeds 3-4 D, such a difference in glasses is usually not tolerated by patients. Then only the better eye is corrected, and for the worse eye, the glass which the patient tolerates is given; sometimes correction of the worse eye is not possible at all, and then a flat glass has to be prescribed for it. ANISOMORPHIC SCLEROSIS (from anisos-unequal and morphe-form), gliosis, is characterized by proliferation of glial fibers in the central nervous system following a rapidly destructive process in the latter; the proliferating glial fibers, replacing the dead nervous tissue, are arranged in relation to it without any order; this feature distinguishes A. s. from isomorphic sclerosis (see), in which the glial fibers are arranged in the order and direction characteristic of the structure of a given part of the nervous system.