Basil H. Bloom BSc(Hons) FCOptom

Optometrist

Orthokeratologist.

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Topography
Nerve Fibre Analysis
Fundus Photography

Glaucoma and Retinal Analysis

Heidelberg Retinal Tomography III (HRT III, Heidelberg Engineering, Germany)
The HRT uses a confocal scanning system to acquire 3-dimensional images of the optic nerve and retina.
This data is used for retinal thickness measurements as well as topographic optic nerve head analysis.

In the case of glaucoma, scanning laser tomography provides ways to view and understand glaucoma that were previously unavailable, and is often referred to as an optical equivalent of a CT scan of the back of the eye. The laser, which is not powerful enough to harm the eye, captures the images in just a few seconds.

Retinal tomography performed on the HRT II system is the most reliable, reproducible and accurate method of monitoring changes in the optic nerve and retinal nerve fiber layer, which is imperative for diagnosis and management of early glaucoma. When used in conjunction with regular clinical examinations with IOP measurements and periodic visual field testing, retinal tomography offers accurate assessment of the retinal nerve fiber layer integrity

Heidelberg Retinal Tomography utilizes the latest software to analyze the optic nerve and nerve fiber layer. Findings are plotted against a statistical average or compared to previous exams producing percent difference or change over time graphic, as well as optic nerve image map and NFL thickness map.

 

 

 

 

 

 

 

This is used to find out if the Optic Nerve is healthy or has been damaged by increased pressure in the eye (GLAUCOMA).

This system will show changes in the Optic Nerve Fibres up to 4 years before any other tests so that treatment can be started immediately.

It also informs us if the Optic Nerve is healthy, which is a great reassurance to patients with a history of Glaucoma.

Individuals at high risk of Glaucoma include any of the following:

  • Ethnic Africans over 40 years old

  • Asymmetric optic disk cupping

  • Caucasians over 65 years old

  • Family history of glaucoma

  • Diabetes

  • Ocular hypertension

  • Severe myopia

  • Visual field loss without elevated intraocular pressure

 

 

Copyright © 1999 Basil H. Bloom Optometrist                                    
Last modified: June 26, 2005