A Guide to Clinical Contact Lens Management

Signs, Symptoms, Diagnosis and Management

Academy for Eyecare Excellence™
IN COOPERATION WITH
Centre for Contact Lens Research
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Palpebral conjunctiva hyperemia

Edema - Stromal

Corneal swelling, stromal edema

Symptoms

  • Slight discomfort if greater than 10% edema

Signs

  • Stromal folds and striae
  • Localized edema will be visible as hazy grey region of cornea
  • DW lenses result in 2% to 7% edema
  • Conventional EW results in 7% to 14% edema
  • SiHy EW results in to 2% to 4% edema

Etiology

  • Hypoxia results in accumulation of lactic acid within the stroma, which produces an osmotic gradient, resulting in an ingress of fluid and increased hydration of the corneal stroma

Prevalence

  • Occasional

Differential Diagnosis

Management

  • Consider SiHy lenses for DW or EW
  • Reduce wearing time, or cease EW of low-Dk lenses

Alcon Vision Care is uniquely poised to serve every contact lens wearer by addressing the full life cycle of their needs.