## **Core Concept**
Modern intraocular lenses (IOLs) are primarily made from materials that are biocompatible, have excellent optical clarity, and can be easily implanted within the eye. The materials used for IOLs have evolved over time to improve their safety and efficacy.

## **Why the Correct Answer is Right**
The correct answer includes materials currently used in the manufacture of IOLs. **Acrylic** and **Silicone** are both commonly used materials due to their biocompatibility and optical properties. **PMMA (Polymethylmethacrylate)**, although one of the earliest materials used for IOLs, is still utilized but less frequently than acrylic or silicone due to its rigidity and the need for a larger incision during implantation.

## **Why Each Wrong Option is Incorrect**
- **Option B (PMMA)** is partially correct but does not represent the most modern or commonly used materials when considered in the context of "modern" IOLs.
- **Option C (PML)** is not a recognized material for IOLs, making it an incorrect choice.
- **Option E (Glass)** is not used for IOLs due to its brittleness and potential to cause damage within the eye.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that modern IOLs are often made of **foldable materials** like acrylic or silicone, which allows for smaller incision sizes during cataract surgery, promoting quicker healing and reduced risk of complications.

## **Correct Answer:** .