الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
 |  | from | 96 |  |  |
| | | from | 96 | | |
Abstract
Amongst various ocular complications caused by DM, diabetic macular
edema (DME) is a leading cause of severe visual loss in patients with
diabetic retinopathy (Browning and Fraser 2005).
DME is diagnosed with ophthalmoscopy or stereoscopic biomicroscopy
as defined by the Early Treatment Diabetic Retinopathy Study (ETDRS)
Research group (1985).These methods do not give an objective quantitative
measurement of DME.
Fluorescein angiography (FA) can explain some dynamics of the
pathophysiological aspects of DME but it is an invasive technique.
OCT is a non invasive technique which shows us the anatomical
structures of the retina such as the extent of the retinal thickening.
The aim of this study was to correlate the mean macular thickness,
using optical coherence tomography, to the Snellen’s visual acuity in
diabetic patients.
This study was carried out on 100 eyes. All of them have early non
proliferative diabetic retinopathy (mild and moderate) with and without
macular edema.
Patients were excluded in the current study if they had macular edema
due to causes other than diabetic retinopathy, media opacity making optical
coherence tomography imaging impossible such as vitreous hemorrhage and
cataract and if they had epiretinal membrane and traction at the macula and
Patients with neurosensory detachment.
Patients were subjected to detailed ophthalmic evaluation including
best corrected Snellen’s visual acuity, slit lamp examination, fundus
biomicroscopy. Measurement of mean macular thickness using optical
coherence tomography (OCT).
There was a statistically significant negative correlation between mean
macular thickness and best corrected visual acuity (decimal) and a
statistically significant association between visual acuity and moderate non
proliferative diabetic retinopathy.