SDM Laser for Non Central Diabetic CSME

Study Overview
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Brief Summary
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Is to determine if SDM laser can reduce macular thickness in non central CSME and stop the progression of non central CSME to central CSME in compare to glycemic control

Detailed Description
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interventional randomised masked study will recruit patients have diabetes mellitus with non central CSME with good vision into two groups : 1st SDM laser with glycemic control 2nd SHAM laser with Glycemic control where BCVA will be recorded every month starting from baseline to 24 weeks where OCT will be recorded every 8 weeks from baseline to 24 weeks

Official Title
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Sub Threshold Laser for Non Central Diabetic Clinical Significant Macular Edema

Conditions
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Non Central Diabetic Macular Edema

Intervention / Treatment
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* Device: Subthreshold 532nm laser


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients with central diabetic macular edema Best corrected visual acuity is 20/30 or more Non central Macular thickness more than 250 microns Patients who are able to come for all follow-up Exclusion Criteria: Significant renal disease, defined as a history of chronic renal failure requiring dialysis or kidney transplant. Myocardial infarction, other acute cardiac event requiring hospitalization, stroke, transient ischemic attack, or treatment for acute congestive heart failure within 4 months prior to randomization For women of child-bearing potential: pregnant or lactating or intending to become pregnant within the next 3 years. Macular edema is present that is considered to be related to ocular surgery such as cataract extraction Substantial cataract that, in the opinion of the investigator, is likely to be decreasing visual acuity by 3 lines or more History of major ocular surgery (including vitrectomy, scleral buckle, any intraocular surgery, etc.) within prior 4 months or anticipated within the next 6 months following randomization. Exam evidence of severe external ocular infection, including conjunctivitis, chalazion, or substantial blepharitis

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 90 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Subtherhold 532 nm laser<br>Applying 532nm subtherhold laser with 5% duty cycle using high density low intensity protocol at the area of non central clinical significant macular edema | Device: Subthreshold 532nm laser<br>* Subthershold 532nm laser<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of eyes with reduced macular thickness | Measurements of retinal thickness in the area of edema | 24 weeks | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of eyes with reduced vision | Best corrected visual acuity at the end of the study | 24 weeks | 
| Number of eyes developing central macular edema |  | 24 weeks | 
| Number of patients achieved good glycemic control | By measuring HbA1C every 12 weeks from baseline | 24 weeks |