**Core Concept**
Optical coherence tomography (OCT) is a non-invasive imaging modality that uses low-coherence interferometry to capture high-resolution images of the retina and other tissues. It provides detailed information about tissue architecture and morphology, making it an invaluable tool in ophthalmology and neurology.

**Why the Correct Answer is Right**
OCT is particularly useful in disorders that affect the retina, such as age-related macular degeneration (AMD), diabetic retinopathy, and retinal detachments. The technology allows for detailed visualization of retinal layers, including the photoreceptors, retinal pigment epithelium, and choroid. This enables clinicians to monitor disease progression, assess treatment response, and detect early signs of retinal damage. OCT can also be used to guide focal laser photocoagulation and intravitreal injections.

**Why Each Wrong Option is Incorrect**
**Option A:** Although OCT can be used to evaluate anterior segment disorders, such as glaucoma, it is not its primary application. Glaucoma is more commonly diagnosed using visual field tests and gonioscopy.
**Option B:** While OCT can provide some information about the optic nerve, it is not the primary imaging modality for optic neuritis or optic neuropathy. MRI and CT scans are more commonly used for these conditions.
**Option C:** OCT is not typically used to diagnose or monitor disorders of the vitreous, such as vitreomacular traction or vitreous hemorrhage. Ultrasound biomicroscopy (UBM) or B-scan ultrasonography are more commonly used for these conditions.

**Clinical Pearl / High-Yield Fact**
Remember the acronym "OCT" to help you recall its applications: Ophthalmology, Corneal, and Traction (referring to vitreomacular traction).

**Correct Answer:** C.