Pattern Laser Versus Conventional Laser in Diabetic Retinopathy

Single Session of Pattern Scanning Laser Versus Multiple Sessions of Conventional Laser for Panretinal Photocoagulation in Diabetic Retinopathy: Efficacy, Safety and Painfulness

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT03672656

Enrollment

Registered

2018-09-14

Start date

2008-01-01

Completion date

2014-01-25

Last updated

2018-09-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Diabetic Retinopathy

Keywords

diabetic retinopathy, patterns, low time of impulse, Pascal

Brief summary

Purpose: To evaluate the clinical efficiency, safety and painfulness of retinal laser photocoagulation employing a pattern scanning laser system Pascal given in a single-session versus conventional laser multiple-session treatment of the same patient with diabetic retinopathy. Methods: The cohort included 60 eyes in 30 patients treated at the Ophthalmology Clinic, Faculty Hospital Ostrava, from 2008 to 2013. Panretinal laser coagulation was performed on one eye using the multispot panretinal photocoagulation given in a single-session system Pascal (SSP) (OptiMedica, Santa Clara, California). On the other eye laser treatment was carried out by the classic conventional multiple-session method (MSM).

Interventions

DEVICElasercoagulation by Pascal system

pattern scanning laser system Pascal given in a single-session

DEVICEconventional laser

conventional laser multiple-session treatment

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

18 Years to 100 Years

Healthy volunteers

Inclusion criteria

* Diabetic retinopathy

Exclusion criteria

* No

Design outcomes

Primary

Measure	Time frame	Description
Clinical efficiency - progression of diabetic retinopathy, scored by calculating of microaneurisms and intraretinal hemorrhages	1 year	progression of diabetic retinopathy after pattern PASCAL laser versus conventional laser. Each item is scored by calculating of microaneurisms and intraretinal hemorrhages
Pain assessed by NRS	1 day	painfulness of pattern PASCAL laser versus conventional laser Each item is scored 0-10 (0 - no pain, 10 - pain as bad as can be)

Secondary

Measure	Time frame	Description
Satisfaction assessed by the VAS	1 day	subjective satisfaction of the patient on dog 0 to 4 0 - not satisfied, 4 - very satisfied after pattern PASCAL laser versus conventional laser

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 21, 2026