H52.13 Myopia, bilateral

Name of the Condition

• Myopia, bilateral

Summary

Myopia, bilateral, is a refractive error where distant objects appear blurry while close objects remain clear in both eyes. This occurs when light entering the eyes focuses in front of the retina instead of directly on it, often due to an elongated eyeball or excessive curvature of the cornea. The condition can range from mild to severe and may progress over time, particularly during childhood and adolescence.

Causes

Myopia is primarily caused by an eyeball that is too long or a cornea that is too curved, preventing light from focusing properly on the retina. Genetic factors play a significant role, as the condition often runs in families. Environmental factors, such as prolonged near work (e.g., reading or screen use), may also contribute to its development or progression.

Risk Factors

• Family history of myopia
• Prolonged near work or screen time
• Limited outdoor activity during childhood
• Certain ethnic backgrounds (higher prevalence in some populations)
• Premature birth or low birth weight

Symptoms

• Blurred vision when viewing distant objects with both eyes
• Squinting or eye strain to see clearly with both eyes
• Headaches, especially after prolonged visual tasks
• Difficulty seeing road signs or distant objects clearly with both eyes

Diagnosis

Diagnosis involves a comprehensive eye examination, including visual acuity tests to assess clarity at various distances, refraction tests to determine the degree of myopia, and a thorough eye health evaluation to rule out other conditions. Slit-lamp examinations and retinal assessments may also be performed.

Treatment Options

• Corrective lenses (glasses or contact lenses) to improve distance vision
• Refractive surgery (e.g., LASIK, PRK) for eligible candidates
• Orthokeratology (corneal reshaping) for temporary vision correction
• Low-dose atropine eye drops to slow progression in children (if appropriate)

Prognosis and Follow-Up

Myopia is generally manageable with regular eye care. Untreated or poorly controlled myopia may progress, increasing the risk of complications. Follow-up appointments are recommended to monitor vision changes, adjust prescriptions, and assess eye health. Early intervention in children can help slow progression.

Complications

• High myopia, which increases the risk of retinal detachment, macular degeneration, and glaucoma
• Strabismus (eye misalignment) due to uncorrected vision differences
• Reduced quality of life from impaired distance vision

Lifestyle & Prevention

• Encourage regular breaks during prolonged near work or screen time
• Promote outdoor activities, especially in childhood, to reduce progression risk
• Maintain good lighting and proper reading distance
• Ensure regular eye examinations, particularly for children and those with a family history

When to Seek Professional Help

Seek care if you experience sudden vision changes, eye pain, flashes of light, or floaters, as these may indicate serious conditions. Regular check-ups are advised for those with myopia to monitor progression and eye health.

Tips for Medical Coders

Document the bilateral nature of the myopia clearly in the medical record. Ensure the diagnosis is supported by clinical findings, such as visual acuity tests or refraction results. Use this code when myopia affects both eyes, and avoid using it for unilateral cases.