A change of >32 μm was likely to exceed interobserver variability in SFCT. Future studies are required to estimate the repeatability of SFCT measurements in patients with chorioretinal pathology.

No abstract

There was no significant relative interocular difference in CT. Axial length contributes to some of the variances in CT but has a significant influence on the CT profile. Although relative interocular difference is not significant, absolute interocular differences in CT may reach 85 μm.

Enhanced depth imaging using spectral domain OCT can be used to identify choroidal changes in inherited retinal disease. The pattern of choroidal change correlates well with the clinical appearance. It appears that the extent and pattern of choroidal thinning is dependent on the stage of the disease in some cases, and in others the causative gene defect.

Laser photocoagulation for severe NPDR or early PDR prior to pregnancy may protect against rapid progression of PDR. Visual impairment resulting from progression of PDR can be prevented by aggressive laser treatment during pregnancy. Duration of diabetes>15 years, poor glycaemic control and hypertension are high-risk factors in the progression of diabetic retinopathy in pregnancy.