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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Calculi lens deposits
Calculi lens deposits

Video: Deposits (Lens Calculi)

Deposits (Calculi)

Deposits (Calculi)

Deposits (Caliculi)

Deposits – Calculi

Jelly bumps

Symptoms

  • None to moderate discomfort

Signs

  • Focal, gelatinous amorphous lump(s) on lens surface

Etiology

  • Focal deposits on lens consisting of mainly lipids and calcium
  • More common with high water lenses (especially FDA group II that contain NVP) and SiHy lenses
  • Care regimen may be implicated as less likely if lenses used with surfactant-containing regimen and rubbed
  • Lens calculi are rare with disposable lenses if the patient is replacing the lenses at the appropriate interval

Prevalence

  • Occasional. Very rare with FDA group IV ionic materials

Differential Diagnosis

Management

  • New lens of different material – avoid high water NVP-containing materials and SiHy if occur
  • Alter lens care regimen
  • Advise on compliance with cleaning procedures and lens replacement
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