Search for dissertations about: "lens thickness"

Showing result 1 - 5 of 11 swedish dissertations containing the words lens thickness.

2. 1. Ocular growth and lens size

   Author : Ulla Kugelberg; Karolinska Institutet; Karolinska Institutet; []
   Keywords : congenital cataract; lens thickness; intraocular implants; ocular axial length; corneal diameter; infant eye; rabbit eye;

   Abstract : 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. READ MORE

4. 2. Fish Lenses : Anatomy and Optics

   Author : Tomasz M Kozłowski; Funktionell zoologi; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Plasticity; Development; Cellular structure; Lens fiber cells; Modeling; Laser Scanning; Schlieren photography; Fast Fourier Transform FFT ;

   Abstract : I have investigated some of the biological regulatory mechanisms governing the development of crystalline lenses. I used fish as model animals because they possess optically interesting lenses, while the geometrical simplicity of fish lenses allows for studies that are difficult or impossible with the lenses of other animals. READ MORE

5. 3. On millimeter and submillimeter wave focal plane arrays implemented with MEMS waveguide switches

   Author : Henrik Frid; Joachim Oberhammer; Vessen Vassilev; Mikro- och nanosystemteknik KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Extended Hemispherical Lens; Beam Steering; Focal Plane Array FPA ; Ray-Tracing; RF MEMS; waveguide switch; micromachined waveguide; submillimeter-wave; rectangular waveguide; terahertz; lenses; antenna theory; silicon; Electrical Engineering; Elektro- och systemteknik;

   Abstract : This thesis presents research towards enabling micromachined millimeter and submillimeter wave focal plane arrays (FPAs). The FPAs operate under the following principle: a switch network consisting of microelectromechanical (MEMS) switches, integrated with micromachined waveguides, is used to feed an array of antenna elements, located in the focal plane of a high-gain quasi-optical system. READ MORE

6. 4. Inflammatory response after cataract surgery : randomized controlled clinical and laboratory studies of different surgical techniques

   Author : Carl-Gustaf Laurell; Karolinska Institutet; Karolinska Institutet; []
   Keywords : Cataract extraction; phacoemulsification; inflammation; blood-aqueousbarrier; anti-inflammatory agents; heparin surface modified intraocular lens; fluorophotometry; prostaglandins; after-cataract; corneal oedema; lasers; comparative study; randomize;

   Abstract : During the last few years the phacoemulsification technique for cataract extraction has improved considerably. Because of this development phacoemulsification has recently superseded extracapsular cataract extraction (ECCE) as the preferred method. READ MORE

7. 5. Congenital ectopia lentis : diagnosis and treatment

   Author : Tiina Rysä Konradsen; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : Congenital ectopia lentis (EL) is an ocular condition, which typically causes a high grade of refractive errors, mainly myopia and astigmatism. These might be difficult to compensate for, especially in children, who might develop ametropic amblyopia. READ MORE