**Core Concept**
Retinal detachment is a medical emergency where the retina separates from its normal position at the back of the eye. It is often associated with age-related macular degeneration, trauma, and high myopia.

**Why the Correct Answer is Right**
Retinal detachment is typically seen in conditions that cause traction or scarring on the retina, such as diabetic retinopathy, retinal tears, and retinoschisis. The correct answer is a condition where the retina is not under tension or traction, making retinal detachment less likely. The condition that best fits this description is myopia with no signs of retinal traction or tears.

**Why Each Wrong Option is Incorrect**
**Option A:** Diabetic retinopathy is a common cause of retinal detachment due to the formation of microaneurysms, hemorrhages, and neovascularization, which can lead to tractional retinal detachment.
**Option B:** Retinoschisis is a condition characterized by splitting of the retina, which can lead to retinal detachment, especially in patients with X-linked retinoschisis.
**Option C:** Retinal tears are a common cause of retinal detachment, especially in patients with a history of trauma, high myopia, or retinal degeneration.

**Clinical Pearl / High-Yield Fact**
Retinal detachment is a surgical emergency that requires prompt treatment to prevent permanent vision loss. The most common surgical technique for retinal detachment is scleral buckling, which involves placing a flexible band around the eye to reattach the retina.

**Correct Answer:** D. Myopia without signs of retinal traction or tears.