Defined by the International Myopia Institute (IMI) as high myopia accompanied by structural changes such as posterior staphyloma, myopic maculopathy, or optic neuropathy.
Generally defined as a refractive error of diopters or an axial length of ≥26.5is greater than or equal to 26.5 Pathologic Myopia
While often confused with "high myopia," pathologic myopia is distinct because it involves specific degenerative lesions rather than just a high refractive error. Defined by the International Myopia Institute (IMI) as
Posterior Staphyloma —a localized bulging of the back of the eye wall—is considered a definitive sign of PM. Common Complications Common Complications Pathologic myopia (PM), also known as
Pathologic myopia (PM), also known as degenerative myopia, is a severe form of nearsightedness characterized by excessive elongation of the eyeball (axial length) that leads to structural changes in the posterior segment of the eye . Unlike standard myopia, which can typically be corrected with lenses, pathologic myopia involves progressive and irreversible damage to the retina, choroid, and sclera, making it a leading cause of blindness worldwide, particularly in East Asian countries. Definition and Key Characteristics
The mechanical stretching of the eye leads to several vision-threatening conditions: A Review of Pathologic Myopia - PubMed