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A laparoscope is an instrument for visual inspection inside the abdomen.
Rhinoscope
Visual
Visual
Arthroscope is an instrument for the visual inspection of the interior of a joint.
The visual examination of the body using the eyes and a lighted instrument if needed. The sense of smell may also be used.
One should not touch the optical assembly with bear hands. Optical surface of cuvettes should not be touched with fingers to avoid erratic reading. Always ensure effectiveness of silica gel kept in instrument. Preserve the instrument from dust particles. Never wash the cuvettes with chromic acid. Wash the cuvette with the distilled water and then with methanol before storage. Check the calibration status before using the instrument and ensure the timely calibration. Do not overfill the cuvettes. Perform the visual inspection of cuvettes for suitability.
It means you look at them.
optical?
By visual inspection. That's not a very common event though, unless the bolts aren't tourqed properly...
An opthalmoscope is a lighted instrument that allows the clinician to examine the interior structures of the eye, including the retina.
Rectal polyps are commonly found by sigmoidoscopy (visual inspection with an instrument consisting of a tube and a light) or colonoscopy