The present study is a semi-experimental clinical trial that 20 patients (40 eyes) with PDR underwent PRP with ARC with a spot number of 1,200 to 1,500 per eye and spot size 500 micron with a duration of 200 ms. The variables of contrast sensitivity, macula thickness under fovea , BCVA, the width of thyroid under fovea , RNFL thickness in the four areas around the disc, and the quality of life questionnaire of all patients were recorded at the beginning of the study.Retinal and choroid under fovea thickness and RNFL thickness were assessed in four areas, one week and one month after the end of treatment, and all the variables mentioned earlier were evaluated three months after PRP surgery. This study is single group that the outcomes are compared before and after the intervention
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
20
PRP with ARC with a spot number of 1,200 to 1,500 per eye and spot size 500 micron with a duration of 200 ms.
Mohammad Sadegh Bagheri Baghdasht
Tehran, Iran
Life Quality
A generic concept reflecting concern with the modification and enhancement of life attributes, e.g., physical, political, moral, social environment as well as health and disease Which is measured by a quality of life questionnaire
Time frame: up to 3 months
RNFL
retinal nerve fiber layer which measured by PP-OCT (optical coherence tomography)
Time frame: up to 30 days
BCVA
best corrected visual acuity which measured by SD-OCT
Time frame: up to 3 months
Retinal thickness in the central part of Fovea
Measured by SD-OCT
Time frame: up to 30 days
Choroid thickness in the central part of Fovea
Measured by EDI-OCT
Time frame: up to 30 days
Physical examination of PDR
An eye exam performed by an ophthalmologist will determine if there is retinopathy
Time frame: up to 3 months
Contrast sensitivity
Contrast sensitivity which measured by Melbourne edge test
Time frame: up to 3 months
Angiography with fluorescein
By injecting fluorescein into the vein and then taking an X-ray to diagnose PDR
Time frame: up to 3 months
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