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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Conjunctival epithelial flap

Conjunctival Flap

CEF Conjunctival epithelial flap

Symptoms

  • Often asymptomatic
  • May experience contact lens discomfort

Signs

  • Areas of loose conjunctival tissue, often along an area of indentation
  • Best viewed with sodium fluorescein, cobalt blue filter, and yellow Wratten filter #12
  • Conjunctival region between the flap and the limbus may be irregular, while the region beyond the flap is smooth
  • More likely observed in the superior and inferior quadrants
  • Resolves within one week of no lens wear

Etiology

  • Lens edge interaction with conjunctival surface delaminates superficial epithelial cells, subsequent blinking and lens movement push the detached sheets of cells into adjacent areas of loose tissue
  • More common with CW of high modulus SiHy lenses

Prevalence

  • Occasional

Differential Diagnosis

Management

  • Switch from CW to DW
  • Refit with a lens of lower modulus and/or rounded edge design

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