AIMS Conventional fundus imaging using a fundus camera produces colour fundus pictures. The scanning laser ophthalmoscope (SLO) has the advantages of lower levels of light exposure, improved contrast, and direct digital imaging but until now has produced monochromatic images as a laser of single wavelength is used. True representation of the fundus is possible by combining images taken using bl...

BACKGROUND We modified and reconstructed a high image quality portable non-mydriatic fundus camera and compared it with the tabletop fundus camera to evaluate the efficacy of the new camera in detecting retinal diseases. METHODS We designed and built a novel portable handheld fundus camera with telemedicine system. The image quality of fundus cameras was compared to that of existing commercia...

PURPOSE In order to automate fundus perimetry, which is usually laborious because of the many manual operations and the frequent eye movements, we developed a new fundus perimeter with an automated measuring system using computer technology. METHODS This fundus perimeter consists of an infrared fundus camera, a fundus-pursuit unit, and a target-display unit. Both units are personal computers ...

We report a case with lacquer cracks observed in the peripheral fundus. A 37-year-old patient with bilateral high myopia who visited our clinic was examined by fluorescein angiography (FA) and fundus autofluorescence (FAF) to determine whether there were myopic fundus lesions. FA showed many arch-shaped, hyperfluorescent linear lesions running circumferentially in the peripheral fundus. FAF sho...

I I A new method to recover and display 3D fundus lobictkn ~ow"w*n shape, inner bottom shape of eyeball, from stereo fundus image pair is developed. For the fundus stereo images, a simple stereo technique does not work, because the fundus is observed through eye lens and a contact wide-angle enlarging lens. In this yf lvLq: method, utilizing the fact that fundus forms a part of sphere, we ident...

A prospective, hospital based, clinical study was conducted in hypertensive patients referred to the eye OPD, KMCTH, Sinamangal during a period of three months to find out the incidence of fundus changes. A total of 302 hypertensive patients were included in the study and their fundus changes were evaluated by direct ophthalmoscopy. The age of the patients ranged from 30-70 years and the durati...

The wavelet-domain Hidden Markov Tree Model can properly describe the dependence and correlation of fundus angiographic images' wavelet coefficients among scales. Based on the construction of the fundus angiographic images Hidden Markov Tree Models and Gaussian Mixture Models, this paper applied expectation-maximum algorithm to estimate the wavelet coefficients of original fundus angiographic i...