Kingston General Hospital O.P.D. Clinic Collection
Category
Diagnostic & Treatment Artifacts
Vision
Classification
Ophthalmology
Vision
Accession Number
998021001
Description
Ophthalmoscope head, which consists of a round metal disc with a rotating plastic dial set inside; the disc is attached to a cylindrical piece that has an open round metal base which has a round knob above it that allows the piece to be put onto a handle and tightened on; the top of the cylindrical…
Ophthalmoscope head, which consists of a round metal disc with a rotating plastic dial set inside; the disc is attached to a cylindrical piece that has an open round metal base which has a round knob above it that allows the piece to be put onto a handle and tightened on; the top of the cylindrical piece has a bevelled piece of glass; this glass lines up with a pin hole through the metal disc; the glass which can be seen through the pin hole changes as the plastic dial is turned; numbers on the disc indicate the glass type
Number Of Parts
1
Provenance
Used at the O. P. D. Clinic at Kingston General Hospital.
Raised lettering on the front reads, "WELCH ALLYN // PAT. NO. // 2027663"; the letters "O.P.D." are also scratched into the front; raised lettering on the back reads "MAY OPHTHALMOSCOPE // WACO NO. 106 // AUBURN, N.Y., U.S.A."; the words, "CLINIC // O.P.D. // CLINIC" are also painted in white on the back
Permanent Location
Storage Room 0010
0010-E4-6
Dimension Notes
Length 8.0 cm. x Width 4.1 cm. x Depth 2.8 cm
Condition Remarks
All pieces of the ophthalmoscope head are complete and unbroken; the top of the disc shows minor wear; the plastic dial moves freely; no corrosion is visible
Copy Type
Original
Reference Types
Book
Reference Comments
"Hospital and Physicians Equipment and Supplies," by The J. F. Hartz Co. Ltd., 1960, p. 194 - see 8-106
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.