Download Dr. Brodie's new program for testing Blue-Cone Monochromats
At ARVO 1998, Dr. Brodie presented a new computer program to simulate Berson's color plates for the identification of patients with Blue-Cone Monochromacy. The program is written in Visual Basic, version 3, and has been successfully tested on PC-compatible computers under either Windows 3.1 or Windows 95 (and, presumably Windows 98 -- not tested yet).
System Requirements:
VGA (or better) color monitor
'True Color' (24-bit chromatic resolution) video graphics adaptor
Mouse or other pointing device
To install: click here to download file 'BLUEMONO.EXE';
copy it to the desired directory or folder.
Open the directory or folder, and execute BLUEMONO.EXE - with Windows 95, simply double-click on the program icon; with Windows 3.1, use the File-Run command.
BLUEMONO.EXE is a self-extracting zip archive. It will install all the necessary files into the chosen directory of folder -- the entire package takes up less than one megabyte.
(The following instructions also appear in the directory where the program was installed in the text file README.TXT, which can be read in any orginary text editor, such as NOTEPAD (which is also included), or WORD.)
To use the program, double click on the icon 'BERSON.EXE.' You should see the basic test screen, with three control buttons on the left, and four colored squares on the right.
First, click on the 'Patient Info' button. A form appears, allowing you to enter the patient's demographic data. You may omit any item. Click on 'Done,' button, lower right, to return to the main screen and begin.
Explain that the object is to choose which of the four squares differs in color from the other three. Clicking on the 'Shuffle Colors' button will randomly reassign the colors, which may aid in the explanation. You or the subject is to indicate the choice by clicking on the odd-colored square. You will hear a brief 'chirp' from the computer, and the same colors will be shuffled. Each time a selection is made, the counter at the lower left will increment, showing you how many trials with the current color choices have been completed.
Once the task is clear, click on the 'Next Color' button. The next set of color choices will appear. The first two sets (grey vs. blue-green and blue-green vs. light blue-green) are instruction tasks; the next four sets (blue-purple [four subtly different shades] vs. blue-green) are each to be presented six times. Use the 'Next Color' button to move to the next color choice. After the final set is completed, pressing the 'Next Color' button will yield a message box stating the test has been completed. Clicking 'OK' will exit the program.
You may close the program at any time by clicking on the 'x' at the upper right.
Data are automatically recorded in a file named 'BERSON.DAT' located in the root directory of the 'C:' drive. Each click on a colored square will append a line to the file, containing the patient's name, the date, sex, age, and diagnosis, followed by an integer from 1 to 6 indicating which color choice was presented, and a 1 or 0 indicating whether the choice was correct or not, respectively. The entries are separated by commas and can easily be imported into an Excel spreadsheet as a 'comma-delimited' file for further analysis.
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Clinical interests:
- Medical Retina:
- inherited, metabolic, and degenerative diseases of the retina,
- diabetic retinopathy
- age-related macular degeneration,
- retinitis pigmentosa
- Clinical electrophysiology and psychophysics:
- electroretinography,
- full-field ('Ganzfeld') technique
- focal ERG
- pattern ERG
- electro-oculography,
- visual evoked potentials,
- dark adaptometry,
- contrast sensitivity,
- color vision
- Epidermolysis Bullosa
- Occupational ophthalmology
- General ophthalmology
Research Interests:
- Clinical electrophysiology: focal and pattern electroretinography
- Early diagnosis of glaucoma
- Theory of corneal topography
Currently seeking patients for participation in the following studies:
- Ocular hypertensives and other glaucoma suspects, for longitudinal follow-up of early indicators of glaucomatous optic nerve injury
- Individuals with color-vision abnormalities, any type, for evaluation of new tests for the description of color-vision abnormalities
Download Dr. Brodie's 'GLSCRN' program for glaucoma screening
System Requirements:
PC-compatible computer running Windows 3.1, Windows 95, or Windows 98
VGA (or better) color monitor
'True Color' (24-bit chromatic resolution video graphics adaptor)
Mouse or other pointing device (recommended)
Dr. Brodie's 'GLSCRN' program may be downloaded from this page as follows:
Click here to download the file 'GLS.EXE.' This is a 'self-extracting' archive, not the actual program file.
Copy GLS.EXE to the desired directory or folder.
Open this directory or folder, and execute GLS.EXE - with Windows 95/98. Simply double-click on the program icon; with Windows 3.1, use the File-Run command.
GLS.EXE is a self-extracting ZIP archive. It will install the necessary files into the chosen directory or folder.
For instructions, double-click on the README icon, which will allow you to view the README text file.
To run the GLSCRN program, double-click on the GLSCRN icon (which resembles a green Landolt-C). Operating instructions and recommended scripts for working with patients may found by clicking on the 'Instructions' button.
This version of the program contains an additional enhancement: At the completion of the protocol, the screen that displays the patient's scores now includes a 'PRINT' button. Clicking this button will send a summary of the patient demographics and results to the Windows default printer.
Please note that this software is supplied 'as is' without warranty of any kind; in particular, no representation is made as to its suitability for the diagnosis or detection of any disease state.
