| You sit patiently on the exam table waiting for your | | | | also. |
| Doctor to finally open the door and ask how your feel. | | | | Some doctors may even carry the a rechargeable |
| Of course you tell him, "Not to good." So he proceeds | | | | battery operated portable otoscope. Otoscopes |
| to listen to your heartbeat and feel your glands to see | | | | usually uses a halogen bulb for a bright light source. |
| if they are swollen. Next he grabs the otoscope off | | | | There are 2.5v and the more powerful 3.5v |
| the wall, puts on a probe cover and starts looking. | | | | otoscopes. |
| He looks at your inner ear canal for inflammation | | | | The ophthalmoscope is the otoscope's close partner. |
| indicating an infection. Just make sure the doctor | | | | Usually sold together as a diagnostic set. Willam Noah |
| changes the probe cover before putting the probe into | | | | Allyn and Frederick Welch invented the first hand-held |
| the other ear. Otherwise the other ear might become | | | | direct illuminating ophthalmoscope. |
| infected as well. The ear should be clear of ear wax | | | | With the ophthalmoscope, the doctor examines your |
| otherwise the doctor might compact the wax as he | | | | retina and vitreous to find any swelling of the optic disc. |
| put the probe into the ear. | | | | This swelling can be caused by intracranial pressure |
| Since the otoscope has a light at the end of the | | | | which might be a sign of hypertension or a tumor. As |
| instrument, the doctor probably uses it as a light source | | | | a symptom you can have headaches. |
| to illuminate your throat to see how your tonsils are | | | | |