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Behavioral Optometry BOAF Volume1 Number1 2012
Views - Stefan Collier
Back To the Future
(Original English)
Manual of Operation Davidsen-Wottring Caecanometer Model 75
During my Ph.D. research, which is a study on the Blind Spot, my mentor, Ray Gottlieb, O.D., Ph.D., FCSO, asked me if I knew about the caecanometry studies. My answer was simple and a straight never heard of it reaction occurred. Ray gave me all the information and even the instrument to use it for my re- search project. I don‘t know how I can ever thank him for this, but proud as a prince I studied in depth about this completely new field for me and worked with my new toy. Being trilled about all this forgotten knowledge, I would like to share with you all the first steps on caecanometry. The first thing I did was reading the manual on the caecanometer. The purpose of this topic „Back to the future“ of the BOAF journal is to share some forgotten knowledge.
I present to you all the manual of operation on the Davidsen-Wottring Caecanome- ter model 74 made by „Diag- nostic instruments Company, 435 West Broadway, Muskogee, Oklahoma, USA“, from 1962.
I tried to contact the Com- pany and the authors for per- mission but my search was in
vane. What follows is a copy of that manual. Have fun and en- joy, just as I did, when I discov- ered this to me unknown or maybe for you forgotten knowl- edge. In another issue of the BOAF journal, I will go deeper into the science of caecanome- try.
Foreword
This manual of the mechan- ics of caecanometer charting for draining focal infection above the clavicles with the Davidsen-Wottring Caecanome- ter is written with the assump- tion that the reader has taken advantage of post-graduate courses and read the articles that have appeared in profes- sional journals on the science. This is a Manual of Operation and is in no way meant to teach the complete art of practicing the technique of caecanometry.
The reader will further note that the technique of using the Caecanometer for glaucoma detection and plotting other pathological scotomata is briefly covered.
Caecanometer
The use of the Caecanome- ter will be found of definite as- sistance in the plotting of retinal defects such as caecal and paracaecal scotomata. The por- tion of the visual field represent-
ing the optic nerve and its sur- rounding retinal area is of grow- ing importance in diagnosing certain pathological conditions.
This manual will describe the new technique of cae- canometry and the utilization of a series of observations which have been made of the size of the plotted physiological blind spot. These observations show certain manifestations of this area and are associated with drainage, not blocked, types of infection and thus have specific diagnostic significance.
Caecanometer
Before studying the tech- nique to be used with the Cae- canometer (pronounced See Ka Nom Eter from the Latin „cae- cus“ meaning blind or invisible) the following statements should be given careful consideration:
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