Pain Perception at Laser Treatment

U

University of Campinas, Brazil

Status and phase

Completed
Phase 4

Conditions

Laser Therapy, Low-Level

Treatments

Procedure: retina photocoagulation

Study type

Interventional

Funder types

Other

Identifiers

NCT01033968
Lira-001

Details and patient eligibility

About

The purpose of this study is to compare the pain perception at laser treatment of peripheral retinal degenerations with green and infrared wavelengths.

Full description

Purpose: To compare the pain perception at laser treatment of peripheral retinal degenerations with green and infrared wavelengths. Methods: Thirty patients (60 eyes) were enrolled in the study. Each patient had one eye treated with infrared laser (diode, 810nm) and the other eye treated with green laser (frequency-doubled solid state laser, diode-pumped, with 532-nm). The laser treatment was performed following a standardized protocol. Immediately after photocoagulation, the patient was asked to grading pain perception according an 11-point (i.e. 0-10) numerical rating scale (NRS) 2,3, accompanied by the instructions "Please rate your pain by indicating the number that best describes it". This NRS is represented as a straight line (10 cm in length). The numbers between 0 and 10 are spaced at regular intervals along the line, at either end of the line are two poles that are defined as the extreme limits of the response to be measure, with '0' meaning 'No pain' and '10' meaning 'Pain as bad as you can imagine'.

Enrollment

30 patients

Sex

All

Ages

18+ years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

* horseshoe tears and dialyses, besides operculated holes and lattice degeneration in symptomatic patients (photopsias) or with history of retinal disease

Exclusion criteria

* severe liver disease, pregnancy, patients on regular analgesics, previous laser photocoagulation, and age less than 18 years old.

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Single Blind

Trial contacts and locations

0

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Data sourced from clinicaltrials.gov

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