Jan 10, 2025 · Color blindness is an eye condition in which someone can't see the difference between certain colors. Though many people commonly use the term "color blind" for this …

Oct 11, 2025 · Overview Regular urine color ranges from clear to pale yellow. But certain things can change the color. Foods such as beets, blackberries and fava beans can turn urine pink or …

Oct 11, 2025 · Foods and medicines can change the color of urine. But a color change also could be a sign of disease.

Jan 25, 2024 · Learn to identify types of birthmarks by how the skin looks. Examples include café au lait spot, congenital nevus, port-wine stain and hemangioma.

Nov 16, 2024 · Raynaud's disease causes smaller blood vessels that supply blood flow to the skin to narrow in response to cold or stress. The affected body parts, usually fingers and toes, …

Jan 2, 2014 · Doctors at Mayo Clinic use endoscopy to look at the colon for signs of disease. Now, they are modifying the test to try and make it more effective for high risk patients.

5 days ago · C: Color changes A spot with more than one color or uneven color may indicate cancer. Colors can include shades of tan, brown or black or areas of white, red or blue. …

Feb 1, 2025 · Trypan blue is used as a surgical aid during cataract eye surgery. It is a blue dye that works by staining a part of the eye called the retinal membrane. This creates a contrast …

Dec 1, 2025 · Description Methylene blue injection is used to treat a condition called methemoglobinemia. This condition occurs when the blood cannot deliver oxygen where it is …

Dec 13, 2023 · Eye color can range from very light blue to brown and may change with age. With albinism, the colored parts of the eyes, called the irises, usually don't have enough pigment. …