A rectangular eight-page booklet with two staples along spine to hold pages together; contains detailed instructions in the use of the Welch-Allyn ophthalmoscope.
A rectangular eight-page booklet with two staples along spine to hold pages together; contains detailed instructions in the use of the Welch-Allyn ophthalmoscope.
Number Of Parts
1
Provenance
Used by either Dr. C. H. Bird or Dr. H. Godfrey Bird of Gananoque, Ontario.
Front cover of booklet reads, "Instructions [in cursive script] // WELCH ALLYN // Ophthalmoscope"; there is a logo, an "A" enclosed in a shield shape (see accession sheet for sketch), on the front cover as well; back of booklet has a diagram of an ophthalmoscope; the words, "WELCH ALLYN INC. Skaneateles Falls, N.Y. // Printed in U.S.A." appear along with, "With the ophthalmoscope five centimeters in front of eye, the lens in the rotating wheel produce clear vision at points indicated in the diagrammatic eye."; (see photocopy)
Permanent Location
Storage Room 2005
2005-2-2 Box #3
Dimension Notes
Length 16.8 cm x Width 8.9 cm x Depth 0.1 cm
Copy Type
Original
Research Facts
ophthalmoscope [of-thal´mo-skop] an instrument for examining the interior of the eye. Direct ophthalmoscope one that produces an upright, or unreversed, image of approximately 15 times magnification. The direct ophthalmoscope is used to inspect the fundus of the eye, which is the back portion of the interior eyeball. Examination is best carried out in a darkened room. The examiner looks for changes in the color or pigment of the fundus, changes in the caliber and shape of retinal blood vessels, and any abnormalities in the macula lutea, the portion of the retina that receives and analyzes light only from the very center of the visual field. Macular degeneration and opacities of the lens can be seen through direct ophthalmoscopy.