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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Furrow staining

Conjunctival Indentation

Furrow staining

Symptoms

  • Often asymptomatic

Signs

  • Arc of fluorescein which pools into area of depressed tissue
  • Best viewed with sodium fluorescein, cobalt blue filter, and yellow Wratten filter #12
  • Location corresponds to the circumference of the contact lens

Etiology

  • Factors that contribute to indentation include: high lens modulus, sharp edge design, tight lens fit, and overnight wearing modality
  • Pressure from upper lid contributes to a greater amount of indentation in the superior quadrant
  • May indicate poor tear exchange behind lens if indentation is a complete annulus

Prevalence

  • Occasional

Differential Diagnosis

Management

  • Reduce frequency of overnight wear
  • Refit with lower modulus material, a looser base curve or a different lens edge design
  • If lens dehydration is suspected, consider using rewetting drops

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