| Description | This is an ophthalmoscope, an optical instrument. It is composed of a metal handle with a detachable pull-off tip to insert the batteries, with an engraving at the bottom: "A02300." Towards the other end, there is a black metal disk called the rheostat, which controls the continuous brightness. This is where the on/off switch is placed, and for the insertion of the ophthalmoscope. The rheostat is engraved with "Welch Allyn Co. Auburn, N.Y. No 705." The ophthalmoscope, composed of black metal, features the viewing window, the lens wheel, and a switch. This is engraved with "Patent no. 2311503 Waco No.110 Auburn N.Y. U.S.A." Signs of wear and tear are visible. This instrument is used to examine the interior structures of the eye. This examination helps in diagnosing various eye conditions and diseases such as glaucoma, diabetic retinopathy, macular degeneration, and retinal detachment. |