الفهرس 
Definition of GlaucomaOnly 14 pages are availabe for public view
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Abstract
Purpose: To estimate the value of central 10 degrees field examination in glaucoma when 24 degrees shows normal central area.
Patients and methods: This is a cross-sectional study carried out on 65 patients divided into 3 groups: glaucoma suspect (17patients), early glaucoma (33 patients) and moderate glaucoma (15 patients).
Visual Field (VF) and Optical coherence tomography (OCT) were performed for all patients. VF was done using Humphrey visual field analyzer (SITA standard) using both 24-2 and10-2 programs. Macular ganglion cell complex thickness (GCC) and peri-papillary retinal nerve fibre layer (pRNFL) were measured using RTVue-100 software (Optovue, Inc., Fremont, CA).
Results: Our study demonstrated that the 10-2 VF detected more defects that those detected in the central 10o of the 24-2 VF in all quadrants of the visual field in all our cases and the difference was statistically significant in the lower temporal (p= 0.006 ), in the lower nasal in the upper nasal and in the upper temporal quadrants (P<0.001) . In the glaucoma suspect group 10-2 VF showed more defects than 24-2 VF which was statistically significant in the upper and lower nasal quadrants (p =0.008). In the early glaucoma group, this difference was significant in the lower temporal (P =0.007), the lower nasal(P<0.001)and the upper nasal (P =0.0016) quadrants. Although there was no statistically significant in moderate glaucoma group. Both GCC and 10.2VF defects agree in outcome in 54% of cases. 10-2 VF looks to be superior to OCT macular ganglion cells and that difference was statistically significant only in the lower nasal quadrant of 10-2VF (p>0.001).
In 49% of cases both GCC and the pRNFL were able to detect abnormalities in the superior hemisphere and 61% the inferior hemisphere. Defects were found in GCC only in 50% and 35% of cases in superior versus the inferior halves. This higher ability of the GCC over the pRNFL was found to be statistically significant (p= >0001). There was a weak positive correlation (r = 0.042) between the superior half GCC versus the antilog of sensitivity of the corresponding inferior half of 10-2 VF. On the other hand, moderate positive correlation (r=0.52) was found between the superior half GCC and the corresponding part of the pRNFL.
Conclusion: The present study showed higher ability of 10-2 VF in detecting changes in the central area than 24-2 VF particularly in glaucoma suspect and early glaucoma. Which agrees with GCC measurments