الفهرس 
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Abstract
This is prospective study, aimed to compare changes in central macular thickness in diabetics versus non diabetic patients after un complicated phacoemulsifiction
This study was carried out during period from March 2015 to June 2017.
All surgeries were performed in Ophthalmolgy Department, Sohag University Hospital.
Fifty patients were studied, Those were divided into 2 groups (group I including 25 controlled diabetics and group II including 25 non diabetic).
All Patients were subjected to preoperative evaluation including Detailed history taking regarding age, presence of diabetes and its duration,History of previous ocular surgery,History of previous ocular treatment in diabetic patients.
Full ophthalmological examination including measuring visual acuity (VA), best corrected visual (BCVA), intraocular pressure (IOP), slit lamp biomicroscopy, examination of fundus by auxiliary lens and indirect ophthalmoscope
The central macular thickness and macular volume was measured by spectral domain Topcon,3D OCT-1 Maestro machine.
Comparison between macular thickness in diabetic and non-diabetic patients showed that mean of macular thickness was higher in diabetic patients with one patient developed cystoid macular oedema after 1month representing 4%,and 2 patients developed macular oedema after 3 months representing 8.3%,and 2patients developed cystoid macular oedema after 6months representing 9.1%.
In other hand, group 2 (non-diabetic) there was no significant difference in postoperative mean of macular thickness in comparative to preoperative mean macular thickness .
Results showed that diabetic patients were more liable to central macular thickness changes than non diabetic patients and development of pseudophakic macular oedema was more in diabetic patients than non diabetics,Totally 20% of diabetic patients in this study developed increases in macular thickness after un complicated phacoemulsification while there was no significant difference in macular thickness in non diabetic patients.
Conclusion
Our results suggest that Diabetes influences the central macular thickness in diabetic pateints, who are more liable to changes in central macular thickness after cataract surgery even if uncomplicated
OCT is valuable, non invasive , reproducible device to detect Pre&Post operative changes in macular thickness and it represents the single most important diagnostic and prognostic tool in management of macular oedema.