Which condition may develop in some eyes with an axial length exceeding 26.5 mm due to pathologic myopia?

In cases of pathological myopia, the axial length of the eye is typically longer than normal, often exceeding 26.5 mm. This elongation can lead to various complications, one of which is choroidal neovascularization (CNV).

The underlying mechanism involves stretching and thinning of the retina and choroid, resulting in alterations in the vascular structures. As the choroidal layer becomes compromised, new and abnormal blood vessels may grow beneath the retina in response to changes in the retinal pigment epithelium and the need for increased oxygen supply. This can lead to vision-threatening complications, as CNV can cause bleeding and scarring in the macula, ultimately affecting central vision.

While conditions such as cataracts, retinal detachment, and glaucoma can occur in eyes with high axial length, choroidal neovascularization specifically stands out as a direct consequence of the alterations caused by pathological myopia. Thus, recognizing CNV as a potential development in these patients underscores the importance of regular monitoring and management to maintain eye health.