Loupe

Examples include surgery, dentistry, ophthalmology, the jewelry trade, gemology, questioned document examination and watchmaking.

[4] A 10× magnification is good to use for inspecting jewelry and hallmarks[4] and is the Gemological Institute of America's standard for grading diamond clarity.

Analog (film) photographers use loupes to review, edit or analyze negatives and slides on a light table.

Photographers using large format cameras may use a loupe to view the ground glass image to aid in focusing.

The magnification helps with accurate diagnoses of oral conditions and enhances surgical precision when completing treatment.

Dental caries, also known as cavities, are most accurately identified by visual and tactile examination of a clean, dry tooth.

Treatment of periodontal disease is achieved by removing calculus deposits, plaque and therefore bacteria which causes inflammation and subsequently bone destruction.

Magnification can assist dentists and hygienists with identification and removal of plaque and calculus in addition to improving visualization for periodontal surgery.

[13] Ergonomics have long been a pain point for doctors who need to physically strain, bending over and looking down, to treat their patients.

[14] Some modern loupes address this by incorporating refractive prisms which alter the course of the light through the telescopes, so that the dentist can maintain a neutral, upright position with eyes relaxed and looking straight ahead.

The loupe is a vital geological field tool used to identify small mineral crystals and structures in rocks.

Conservators often use hand held loupes or head-mounted binocular magnifiers such as the Optivisor to examine artifacts and documents requiring cleaning or repair.