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Patient Assessment of Topical Anesthetic Effectiveness for Intravitreal Injections

This study has been completed.
Information provided by:
Illinois Retina Associates Identifier:
First received: December 4, 2009
Last updated: May 3, 2010
Last verified: December 2009
There are currently several different commercially available topical eye drops and gels used to reduce eye discomfort (topical anesthetics) during and after eye injections. Dr. Pollack is performing a research study to evaluate three commercially available topical anesthetics (eye numbing treatments) to determine if individuals have a preference for one over the other. The three topical anesthetics being studied are 1) 0.5% proparacaine hydrochloride (generic, Akorn, Inc), 2) 0.5% proparacaine hydrochloride (generic, Akorn, Inc) PLUS 4% lidocaine hydrochloride topical solution (generic, Roxane Laboratories), and 3) 3.5% lidocaine hydrochloride ophthalmic gel (Akten, Akorn, Inc). These eye anesthetics are NOT experimental medications. They are all commercially available topical anesthetics currently used in our offices and their use is widespread among retina specialists throughout the United States. Dr. Pollack will randomly select one topical anesthetic to use and he will ask you to grade your level of pain associated with the injection procedure. Answering these questions should take less than one minute of your time and your identity will NOT be revealed with the results of this study. The results of this study will be used to inform doctors which eye anesthetics patients find most effective for pain control during eye injections.

Condition Intervention Phase
Drug: proparacaine HCL 0.5%
Drug: proparacaine HCL 0.5% + 4% lidocaine solution
Drug: 3.5% viscous lidocaine gel
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Patient Assessment of Topical Anesthetic Effectiveness for Intravitreal Injections

Resource links provided by NLM:

Further study details as provided by Illinois Retina Associates:

Primary Outcome Measures:
  • Injection experience "grade" [ Time Frame: Outcome data is obtained approximately 10 seconds after conclusion of procedure ]

Secondary Outcome Measures:
  • Pain grades for lid speculum, needle insertion, povidone iodine burning/stinging [ Time Frame: Outcome data is obtained approximately 10 seconds after conclusion of procedure ]

Enrollment: 120
Study Start Date: October 2009
Study Completion Date: December 2009
Primary Completion Date: November 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: proparacaine HCL 0.5% Drug: proparacaine HCL 0.5%
Experimental: proparacaine + lidocaine Drug: proparacaine HCL 0.5% + 4% lidocaine solution
Experimental: lidocaine gel Drug: 3.5% viscous lidocaine gel

Detailed Description:
In this prospective study, 120 sequential patients undergoing 30 and 33 Gauge intravitreal injections were randomly assigned to receive either: proparacaine HCL 0.5% (Group 1), proparacaine HCL 0.5% + 4% lidocaine liquid drops (Group 2); or 3.5% lidocaine gel (Group 3) as topical anesthetic prior to injection. All procedures utilized a lid speculum and 5% povidone iodine. Approximately 10 seconds after injection, patients graded pain associated with the lid speculum, the needle, and with burning sensation on a pain scale of 0 to 10, with 0 representing no pain and 10 representing the patient's worst imaginable pain. They also graded their overall injection procedure experience as Excellent, Very Good, Fair, Poor, or Awful.

Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients requiring intravitreal injection for treatment of eye disease

Exclusion Criteria:

  • Eye infection
  • Retinal detachment
  • Age less than 18 years
  • Pregnant
  • Unable or unwilling to provide informed consent
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01027611

United States, Illinois
Illinois Retina Associates
Joliet, Illinois, United States, 60435
Sponsors and Collaborators
Illinois Retina Associates
Study Chair: John S. Pollack, MD Illinois Retina Associates
  More Information

Responsible Party: John S. Pollack, M.D., Illinois Retina Associates Identifier: NCT01027611     History of Changes
Other Study ID Numbers: jsp-001
Study First Received: December 4, 2009
Last Updated: May 3, 2010

Keywords provided by Illinois Retina Associates:
Effectiveness of topical pain medicine for control of pain associated with intravitreal injections
Eye discomfort

Additional relevant MeSH terms:
Anesthetics, Local
Central Nervous System Depressants
Physiological Effects of Drugs
Sensory System Agents
Peripheral Nervous System Agents
Anti-Arrhythmia Agents
Voltage-Gated Sodium Channel Blockers
Sodium Channel Blockers
Membrane Transport Modulators
Molecular Mechanisms of Pharmacological Action processed this record on April 28, 2017