## Core Concept
The vitreous body is a critical component of the eye, providing it with its spherical shape and contributing to its optical properties. The attachment of the vitreous is crucial for maintaining the eye's structure and function. The strongest attachment of the vitreous is at specific points which are vital for its stability.

## Why the Correct Answer is Right
The strongest attachment of the vitreous is at the **ora serrata**, which is the serrated junction between the retina and the ciliary body. This attachment is crucial because it provides a firm connection between the vitreous base and the underlying ocular structures, ensuring the stability of the vitreous body within the eye. The ora serrata serves as an anchor point for the vitreous, preventing it from shifting or detaching easily.

## Why Each Wrong Option is Incorrect
- **Option A:** The attachment at the **optic disc** is not the strongest. While the vitreous does have a relationship with the optic disc, particularly with the posterior vitreous detachment often occurring here, it's not the site of the strongest attachment.
- **Option B:** The **lens equator** is not noted for a strong attachment of the vitreous. The vitreous does attach to the lens via the hyaloid capsular ligament (Weigert's ligament), but this is not the strongest attachment site.
- **Option C:** This option might seem plausible but given the context, it's less relevant compared to the ora serrata.

## Clinical Pearl / High-Yield Fact
A key clinical point to remember is that the vitreous has a strong attachment at the **ora serrata**, and this is a site where retinal tears are less likely to occur compared to more posterior areas. However, the vitreous' attachment to the lens and its relationship with the optic disc are also clinically significant, especially in the context of retinal detachment and posterior vitreous detachment.

## Correct Answer: D. ora serrata