What Is a Colposcopy?

A colposcope is an optical instrument used to examine the internal environment of the female vagina. It aids in diagnosing various vaginal conditions—such as vaginitis or cervicitis—and can magnify minute local lesions up to 20-fold, facilitating identification of their underlying causes. Below, we provide a detailed explanation of what a colposcope is.

What Is a Colposcope?

A colposcope is an optical instrument primarily used to examine the lower female genital tract. It illuminates epithelial cells with a light source and magnifies the vaginal wall, cervical epithelium, and subepithelial blood vessels to detect any pathological changes. Standard magnification ranges from 7.5× to 15×, while minute localized lesions may be examined at higher magnifications of 20× to 30×. It is widely employed in diagnosing multiple vaginal disorders—including vaginitis and cervicitis.

Knowledge Extension: How Is a Colposcopy Performed?

1. The colposcope’s magnifying capability is used to inspect the vulva and vagina for any visible abnormalities.

2. A speculum is gently inserted into the vagina under direct visualization—while gradually expanding the vaginal opening—to examine the shape, color, and presence of any lesions on the cervix. Care must be taken during insertion to avoid cervical trauma.

3. A 3% acetic acid test is performed to differentiate between squamous and columnar epithelium on the cervix. During this step, the application must be gentle, avoiding lateral friction or excessive epithelial removal, which could interfere with accurate assessment.

4. An iodine test (Schiller test) is subsequently conducted to further confirm the status of cervical squamous and columnar epithelium.

5. Capillaries are meticulously observed using a green filter lens on the objective lens, with magnification increased to 20×. If suspicious lesions are identified, targeted biopsies are obtained for histopathological examination.

6. Finally, the colposcope is carefully withdrawn, the power supply is disconnected, and the instrument is returned to its storage location. The patient should rest briefly before standing and walking.

This concludes our overview of what a colposcope is. We hope this information has been helpful. Wishing you a joyful life and good health!