A Comparison Between The Diagnostic Results Of Short Wavelength Automated Perimetry And Standard Automated Perimetry In The Diagnosis Of Early Diabetic Retinopathy: A Comparison Cross-sectional Study In Syria.

Abstract

Aim:

To compare the diagnostic results of Short Wavelength Automated Perimetry (SWAP) with Standard Automated Perimetry (SAP) in type 2  diabetes patients and to evaluate the role of SWAP in the early detection of diabetic retinopathy .

Methods :

In this comparative cross-sectional study, held in Ophthalmology Department. Participants undergo full ophthalmological  and systematic examination. The participants are divided into three groups: Group(1) of healthy patients , Group(2) of diabetic patients without diabetic retinopathy, and Group (3) of diabetic patients with mild diabetic retinopathy.

We conduct two tests on each subject; first SAP (G pattern) then SWAP using OCTOPUS 900 perimeter. The visual field global indices are compared between SAP and SWAP and between the groups on each perimetry technique separately.

Results :

There are statistically significant results regarding MS,MD and sLV in SAP and SWAP techniques. MD and sLV results are significantly higher in diabetic groups rather than healthy groups in both SAP,SWAP. Whereas MS values are lower in diabetic groups. Moreover, MD and sLV results are higher and MS results are lower in the NPDR group than not DR group in both SAP and SWAP. Lastly, MD, sLV and MS results are statistically significant in SWAP comparing with SAP, as MD ,sLV results are higher and MS lower.

Conclusion :

This study show that SWAP is superior to SAP in identifying patients with early diabetic retinopathy, and may therefore be quite useful for determining early and progressive changes in diabetic retinopathy.