Sökning: "crystalline lens"
Visar resultat 1 - 5 av 12 avhandlingar innehållade orden crystalline lens.
1. Morphological and Physiological Adaptations in Cichlid Crystalline Lenses
Sammanfattning : Vertebrate eyes share a common ancestry as well as the basic design with a pupil, a retina and a lens. The lens is essential for perceiving the details in the world around us and ensures that a sharp image of the surroundings is focused onto the photoreceptors in the retina. LÄS MER
2. Evolution of Vertebrate Eyes: a study on lens suspension and optical proterties
Sammanfattning : Many fishes have well-developed visual systems with color vision capabilities. The crystalline lens is the major refractive element in a fish eye since the cornea is optically inactive underwater. A typical fish eye has a large pupil and a lens of short focal length, features that increase light gathering ability. LÄS MER
3. Ocular growth and lens size
Sammanfattning : Ocular axial length growth was investigated with special reference to the influence of crystalline lens and different intraocular lens implants, in human infants and three week-old rabbits. First it was concluded, in a retrospective study of children with bilateral congenital cataract, that lensectomy during the first months of life resulted in almost normal visual development. LÄS MER
4. MULTIFOCAL SPHERICAL FISH LENSES
Sammanfattning : Vision is an important source of information for many animals. The lens plays a central role in the visual pathway and hence the ecology of these animals. Fish have spherically shaped crystalline lenses that contain a gradient of refractive index. Like all refracting elements, lens performance depends on the wavelength of the refracted light. LÄS MER
5. Studies on the crystalline lens in the normal and alloxan diabetic rat
Sammanfattning : .... LÄS MER