H44.2A

Clinical Causes: Progressive elongation of the eyeball, leading to stretching and thinning of ocular tissues. Age-related degenerative changes in the retina and choroid. Genetic predisposition to high myopia and associated structural eye abnormalities. Environmental factors contributing to worsening myopic progression, such as excessive near work or inadequate outdoor activities.

Key Symptoms: Blurring or distortion of central vision. Sudden appearance of a dark or blind spot in the visual field. Visual fluctuations, including sudden worsening or improvement. Difficulty focusing on fine details when looking at objects directly. Potential loss of vision if choroidal neovascularization progresses without treatment.

Diagnosis Path: Dilation of the pupils to examine the retina and choroid. Optical coherence tomography (OCT) to capture detailed cross-sectional images of retinal layers. Fluorescein angiography, where a dye is injected into a vein to visualize abnormal blood vessels and leaks. Fundus photography to document retinal and choroidal changes. Assessment of visual acuity and visual field testing.

Treatment Protocols: Anti-vascular endothelial growth factor (anti-VEGF) injections to inhibit abnormal blood vessel growth and reduce leakage. Photodynamic therapy (PDT), which involves injecting a light-sensitive drug followed by laser activation to target abnormal vessels. Laser photocoagulation to destroy neovascular membranes in specific cases, though it is less favored now due to potential damage to healthy tissue. Regular monitoring with OCT and fluorescein angiography to track disease progression. Corrective lenses or low vision aids to optimize remaining vision. Addressing underlying myopic progression through lifestyle modifications and, when appropriate, surgical interventions.