## **Core Concept**
The question pertains to the types of senile cataracts and their association with glaucoma. Senile cataracts are a common age-related condition affecting the lens of the eye, leading to vision impairment. Glaucoma, on the other hand, involves damage to the optic nerve, often due to abnormally high pressure in the eye.

## **Why the Correct Answer is Right**
The correct answer, **C. Cortical cataract**, is associated with a higher risk of glaucoma formation. Cortical cataracts involve the periphery of the lens and can lead to changes in the lens that may affect intraocular pressure (IOP) regulation. The spoke-like opacities characteristic of cortical cataracts can lead to issues with aqueous outflow, potentially causing or exacerbating glaucoma.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because the question does not specify a type of cataract commonly linked with glaucoma in the provided text. Generally, nuclear cataracts involve the central lens and are less commonly associated directly with glaucoma formation compared to cortical cataracts.
- **Option B:** This option is incorrect as it does not directly relate to a commonly recognized type of cataract associated with glaucoma. Posterior subcapsular cataracts (PSC) can cause significant vision problems but are less directly linked to glaucoma compared to cortical cataracts.
- **Option D:** This option is incorrect because, similar to options A and B, it does not specify a type of cataract with a well-known association with glaucoma.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that **acute angle-closure glaucoma** can be precipitated by pupillary dilation in the setting of a mature or hypermature cataract, but **cortical cataracts** are particularly noted for their association with chronic changes that can predispose to glaucoma. Recognizing the types of cataracts and their potential complications is crucial for ophthalmology and general medical practice.

## **Correct Answer:** . Cortical cataract