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Central Corneal Thickness

A study of the Central Corneal Thickness related to age, sex, and eye location(right/left) on 912 eyes of people with Caucasian ethnicity.

By Jon Brodwall MD, Specialist of Ophthalmology, Researcher at ViciData AS, founder of: Oslo Øyelegesenter AS (Oslo Centre of Ophthalmology) now: Consultant of Ophthalmology at Volvat-Orbita.

Short Consensus

The cornea is the frontal transparent part of the eye. It is responsible for about ¾ of the eye`s total refractive capacity. It is non-vascular and nutrition is delivered from the tear fluid, vessels that stop at the corneal boarder and from aqueous humour delivered by the corneal endothelium.

The central corneal thickness (CCT) is of great importance to the refractive power of the eye and to the measurement of the intraocular pressure. It is important to know the CCT and corneal structure prior to cataract and refractive surgery. The present study is the results of CCT measurement on 912 eyes (457 right and 455 left eyes) organized in 3 groups: Unknown sex, female, and male. 378 persons had age registration (Unknown sex:73, female:190, male:115), total eyes: 746 eyes with age registration. The examinations were executed with NIDEK Specular Microscope CEM-530.

The object of the present study is to present an overview of the CCT related to age, sex, and right/left eye location. Detailed results with discussion and references will be presented in the full article.

Corneal Endothelium

A study of the Corneal Endothelial Cell Density related to age on 178 eye of equal, Caucasian ethnicity.

By Jon Brodwall MD, Specialist of Ophthalmology, Researcher at ViciData AS, founder of: Oslo Øyelegesenter AS (Oslo Centre of Ophthalmology) now: Consultant of Ophthalmology at Volvat-Orbita.

Short Consensus

The Corneal Endothelial Cell Layer (ECL) is of vital importance to the nutrition, the refractive power, the clearness and evenness of the cornea. The ECL is a mono-cellular, non-mototic cell layer that at birth counts about 6000 cells/mm2. With increasing age the Endothelial Cell Density (ECD) reduces to about 2000-3000 cells/mm2 at the age of 80 years. External and internal conditions affect the ECD (damages to the cornea, surgery, infections etc.).Because of its the non-mitotic characteristic a cell reduction leads to abnormality and morphological changes of the layer that may affect the refractive qualities of the cornea. In this study the NIDEK Specular Microscope,CEM-530 (NSM) was used to register the ECD in 190 eyes (101 right and 89 left eyes).

The purpose of this study is to enlighten the ECD with regards to age, sex and eye location and present a standard model of ECD that can be a guideline to the treatment of eye disease, damage and surgery(cataract, refractive, intra ocular). The results will be presented in coming article.

Age Related Macular Degeneration.

A study of the Age related Macular Degeneration, an epidemiological study from an Ophthalmological pr.

By Jon Brodwall MD, Specialist of Ophthalmology, Researcher at ViciData AS, founder of: Oslo Øyelegesenter AS (Oslo Centre of Ophthalmology) now: Consultant of Ophthalmology at Volvat-Orbita.

Short Consensus

Age related Macular Degeneration (AMD) is the main reason for central vision loss among elderly in Norway. The present study is the first ever presented i Norway on the occurrence of the disease in relationship to a general praxis profile. Sex and age distribution is recorded and the occurrence of AMD. The various manifestations of the disease are not recorded. Basically, AMD increases with age to between 20 and 30% at the age of 80. No sex differences were observed.

The study was performed at Oslo Centre of Ophthalmology.  Support was given from “The Norwegian Association of the Blind and Partially Sighted”. Statistical assistance was provided by Professor Øyvind Nissen from the Norwegian College of Agriculture.

The study was price awarded from “Ophthalmologist Otto Johansens Foundation”