AS OUR studies on uptake of radioactive phosphorus by intraocular tumors have progressed, numerous technical modifications have been introduced to facilitate such measurements in posteriorly situated neoplasmas. A curved-anglewindow Geiger counter was designed to be inserted through a conjunctival incision.1 Later, in working with animals' eyes, a similar counter of smaller size was de
A transilluminator for use with the curved-angle-window Geiger counter as an aid in localization of posterior intraocular neoplasms. Manufactured by Anton Electronic Laboratories, Inc., 1226-1238 Flushing Ave., Brooklyn 6. veloped, which is now also being used in clinical cases.2 To aid further in the localization of posteriorly situated lesions, we have now constructed a transilluminator which is attached directly to the counter probe.
To obtain satisfactory radioactive counts over an intraocular lesion, the mica window of the counter must be placed as nearly over the tumor as possible; or at least, a border of
THOMAS CI, KROHMER JS. A TRANSILLUMINATOR FOR USE WITH THE CURVED GEIGER COUNTERAn Aid to Localization of Posterior Intraocular Neoplasms. AMA Arch Ophthalmol. 1956;55(3):413-414. doi:10.1001/archopht.1956.00930030417012