**Core Concept**
The question is testing the ability to identify the correct method for visualizing the periphery of the retina. The periphery of the retina is the area located outside the central visual axis, which is responsible for peripheral vision. In ophthalmology, indirect binocular ophthalmoscopy is a technique used to visualize the retina, particularly the periphery.

**Why the Correct Answer is Right**
Indirect binocular ophthalmoscopy involves using a condensing lens and a binocular indirect ophthalmoscope to view the retina. The condensing lens focuses the light from the retina onto a smaller area, allowing the practitioner to see the periphery of the retina in a more detailed manner. This technique is particularly useful for examining the peripheral retina, which is often difficult to visualize with direct ophthalmoscopy. The binocular aspect of the instrument allows the practitioner to use both eyes to view the retina, providing a more comprehensive view of the peripheral retina.

**Why Each Wrong Option is Incorrect**
**Option B:** Direct ophthalmoscopy is a technique used to visualize the central retina, but it is not suitable for examining the periphery of the retina. The narrow field of view and the fact that it is monocular make it less effective for peripheral retinal examination.

**Option C:** Contact lens can be used in conjunction with a slit lamp to examine the anterior segment of the eye, but it is not typically used for visualizing the periphery of the retina.

**Option D:** Not all options listed are correct, so this option is incorrect.

**Clinical Pearl / High-Yield Fact**
It's worth noting that indirect binocular ophthalmoscopy is often used in conjunction with scleral depression to visualize the periphery of the retina. Scleral depression involves gently pushing the sclera of the eye to allow the practitioner to view the peripheral retina more clearly.

**✓ Correct Answer: A. Indirect binocular ophthalmoscopy**