Search for dissertations about: "myopic regression"

Found 5 swedish dissertations containing the words myopic regression.

2. 1. Refractive surgery with the ArF excimer laser (photorefractive keratectomy) : surgical technique, wound healing and refractive results

   Author : Heléne Hamberg-Nyström; Karolinska Institutet; Karolinska Institutet; []
   Keywords : Photorefractive keratectomy; excimer laser; comparison; centration; contrast sensitivity; night vision; endothelial cell; epithelial thickness; multipassmultizone; multizone; haze; saccades; hyaluronan; myopic regression; reoperation; wound healing.;

   Abstract : Excimer lasers have been adapted to treat refractive errors in the human eye since 1987. By remodeling the corneal surface, myopia and astigmatism can be corrected. The investigations herein were performed during a time period when the surgical technique development was extensive. READ MORE

4. 2. Water, hyaluronan and surface shape in corneal wound healing after excimer surgery : experimental studies

   Author : Beat A Weber; Karolinska Institutet; Karolinska Institutet; []
   Keywords : photorefractive keratectomy; excimer laser; rabbit; cornea; wound healing; microradiography; hyaluronan; planimetry; leukocyte protein marker; haze; regression; surface irregularities; subepithelial deposits; remodeling; epithelial hyperplasia; corticosteroids;

   Abstract : Excimer laser photorefractive keratectomy (PRK) has evolved to a widely performed procedure. The excimer laser corrects refractive ametropias by removing a calculated amount of anterior corneal stroma with great precision and with minimal damage to the adjacent tissues. The correction of myopia up to -5. READ MORE

5. 3. Inflammation and wound healing following photorefractive keratectomy

   Author : Santiago Tomás Barberán; Karolinska Institutet; Karolinska Institutet; []
   Keywords : Photorefractive keratectomy; excimer laser; inflammation; flare; prostaglandins; diclofenac; dexamethasone; pain; epithelial healing; corneal topography; growth factors; metalloproteinases; collagen; haze; haze distribution; Scheimpflug system; Laser Flare Meter; regression; reoperation; wound healing;

   Abstract : This study comprises different aspects on the inflammatory and wound healing responses of the eye after Photorefractive Keratectomy (PRK). The purpose was to provide basic information about the inflammatory reaction and the wound healing after surgery. PRK is considered a good technique for surgical correction of and moderate myopia. READ MORE

6. 4. Prevalence of refractive errors and incidence of myopia in Swedish schoolchildren

   Author : Pelsin Demir; António Filipe Macedo; Karthikeyan Baskaran; Niall Strang; Linnéuniversitetet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Refractive error; myopia; prevalence; incidence; risk factors; children; fovea; macula; autorefractor; aberrometer; synfel; refraktion; myopi; barn; prevalens; incidens; riskfaktorer; fovea; makula; autorefractor; aberrometer; Optometry; Optometri;

   Abstract : PurposeThe aim of this thesis was to investigate the prevalence, incidence, and risk factors for myopia development in a cohort of Swedish schoolchildren. The specific goals were: - to recruit a cohort of children aged 8 to 16 years and to follow the cohort over a period of 24 months with regular study visits; - to investigate the predictive value of relative peripheral error and other optical parameters for the prevalence and incidence of myopia; - to determine and investigate the predictive value of genetic and environmental factors, and structural characteristics of the eye to the incidence of myopia. READ MORE

7. 5. Designing Public Organizations and Institutions: Essays on Coordination and Incentives

   Author : Jens Dietrichson; Nationalekonomiska institutionen; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Organizations; institutions; coordination; incentives; performance measurement; communication; budget processes; local governments; fiscal performance; bailouts;

   Abstract : This thesis consists of an introduction and four self-contained chapters that address issues of how organizations and institutions should be designed in order to provide adequate incentives and enable coordination. The first essay uses a multi-task principal-agent model to examine two reasons why coordination problems are common when public sector organizations share responsibilities: the incentives to coordinate resource allocation and the difficulties of measuring performance. READ MORE