**Core Concept**
Macula involvement in various diseases refers to the impact on the macula, a specialized part of the retina responsible for central vision and fine detail. The macula is highly sensitive to certain conditions, leading to vision impairment.

**Why the Correct Answer is Right**
Involvement of the macula is common in conditions like age-related macular degeneration (AMD), diabetic maculopathy, and central serous chorioretinopathy. These conditions often result in vision loss due to the degeneration or damage of the macular tissue. The macula's high metabolic rate and sensitivity to ischemia, oxidative stress, and inflammation contribute to its vulnerability.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because macula involvement is not typically associated with conditions affecting the peripheral retina, such as retinal detachment.

**Option B:** This option is incorrect because while conditions like diabetic retinopathy can affect the macula, the question asks for conditions where macula involvement is "common," and diabetic retinopathy primarily affects the peripheral retina.

**Option C:** This option is incorrect because conditions like glaucoma primarily affect the optic nerve, leading to progressive vision loss, but macula involvement is not a hallmark of glaucoma.

**Clinical Pearl / High-Yield Fact**
When evaluating macular involvement, it's essential to consider the patient's visual acuity, central vision, and fine detail perception, as these are often affected in conditions like age-related macular degeneration and diabetic maculopathy.

**Correct Answer: B. Diabetic maculopathy.**