**Question:** Haemorrhage at macular spot in high myopia is called

A. Macular hole
B. Macular hole-related haemorrhage
C. Macular hole-related haemorrhage due to choroidal thinning
D. Coats' disease

**Correct Answer:** C. Macular hole-related haemorrhage due to choroidal thinning

**Core Concept:** High myopia, also known as nearsightedness, is a refractive error characterized by an excessive elongation of the eyeball, particularly the axial length. This elongation results in a thinner choroid, the layer beneath the retina, which can lead to complications due to its reduced strength and blood supply.

**Why the Correct Answer is Right:** The correct answer (C) is right because haemorrhage at the macular spot in high myopia is caused by the thinning of the choroid, particularly in the macula region. This choroidal thinning, often due to the prolonged axial elongation seen in high myopia, weakens the choroid, making it more susceptible to rupture and subsequent haemorrhage.

**Why Each Wrong Option is Incorrect:**

A. Macular hole (Macular hole-related haemorrhage) is a hole formation in the macula, which is unrelated to choroidal thinning in high myopia.

B. Although macular hole-related haemorrhage shares a connection with high myopia, it is not specific to the choroidal thinning caused by axial elongation.

D. Coats' disease is a rare retinal disorder characterized by the exudative changes in the retina, not directly related to choroidal thinning due to axial elongation in high myopia.

**Clinical Pearl:** Choroidal thinning in high myopia is a significant concern as it can lead to clinically relevant complications like macular hole-related haemorrhage. It highlights the importance of comprehensive ophthalmic examination in patients with high myopia and regular monitoring to detect and manage complications like this in a timely manner.