COA Flashcards - Ophthalmic Imaging 3% of exam
In fundus photography, when the camera is too far from the eye, a _____ _____ will form around the image.
Blue-grey halo
“Diagnostic” or “standardized” _____ are performed for quantitative evaluations of a tissue’s structure, reflectivity and sound absorption.
A-scans
_____ photography is used to photograph the anterior segment of the eye.
Slit lamp
Specular photomicrography is a method of evaluating the _____ surface of the cornea
Endothelial
_____ photography documents the posterior segment of the eye
Fundus
_____ devices create three dimensional digital images of the optic nerve, and retina
Tomography
Three of the most common tomographic image devices are _____, _____, and _____.
OCT-optical coherence tomography, HRT-Heidelberg retinal tomography, and GDx scanner laser polorimeter
The data provided by tomographic devices are useful in evaluating progressive _____ and _____ damage.
Optic nerve and retinal nerve fiber layer
Ophthalmic photography serves to _____ and _____ ophthalmic conditions.
Document and diagnose
Computer assisted corneal topography is instrumental in early diagnosis of _____.
Keratoconus
Corneal topography uses _____ colors to denote steeper areas of the cornea and _____ colors to denote flatter areas of the cornea.
Warm (red, orange), cool (blue)
Today’s computer assisted corneal topography systems are based on data obtained from a reflected _____ _____ image.
Placido disc
_____ does not appear on magnetic resonance imaging (MRI).
Bone