Pellucid marginal degeneration PMD of eye Cornea ; Causes, symptoms, Diagnosis, Treatment скачать в хорошем качестве

Pellucid marginal degeneration PMD of eye Cornea ; Causes, symptoms, Diagnosis, Treatment

Pellucid Marginal Degeneration (PMD) is a rare, progressive corneal condition that causes thinning in the peripheral, inferior part of the cornea. This thinning leads to irregular astigmatism and reduced visual acuity over time. Unlike keratoconus, PMD does not cause scarring, and the central cornea remains clear. Key Features: Symptoms: Gradual worsening of vision due to increasing astigmatism. Rarely, PMD can lead to acute corneal hydrops, causing sudden blurred vision and sensitivity to light. Diagnosis: Eye care specialists use corneal topography and pachymetry to assess corneal thickness and shape. PMD is often misdiagnosed as keratoconus due to similarities in presentation. Treatment: Management includes corrective lenses, specialized contact lenses, or surgical options like corneal collagen cross-linking and corneal transplantation for severe cases #degeneration