Colonoscopy is an endoscopic medical procedure that uses a long, flexible, lighted tubular instrument called a colonoscope to view the rectum and the entire inner lining of the colon (large intestine).
instrument used to view the eye
A microscope is used to view minute organisms.
To view things from far away is called a binocular
Retinascope
our naked eyes...
periscope
The medical term for an instrument used to view small objects is "microscope." It is commonly used in various medical fields for examining cells, tissues, or microorganisms at a magnified level.
An optical telescope is the simplest instrument to view the heavens.
There are many. The general term would be optical instruments
Yes. A colonoscopy views the entire colon. It passes from the anus to the rectum, sigmoid colon, descending colon, transverse colon, ascending colon and on occasion may look at the distal part of the small bowel as well.
A microscope is used to view smaller objects at a magnified scale, allowing for detailed observation of structures that are not visible to the naked eye.