Assessment of vitreoretinal interface and clinically significant macular edema by OCT and fluorescein angiography

To assess the changes occurring at the vireoretinal interface with clinically significant macular edema using optical coherent tomography [OCT] and fundus fluorescein angiography [FFA]. Ninety nine eyes of 84 patients suffering from macular edema of different etiologies were included in this study. They were divided according to the cause of macular edema into 6 groups. Treatment modalities were done to be evaluated in the follow up. All cases were followed up at regular visits one week, one month, and six months with routine ocular examinations. FFA and OCT changes were determined and evaluated at one month and 6 months after treatment. In diabetic group [40 eyes], there were 22 eyes with different stages of PVD seen by OCT in comparison to 5 eyes only demonstrated by FFA, ERM seen by OCT of different stages in 14 eyes while in FFA 10 eyes only, In the RVO group [15 eyes], there were 6 eyes with different stages of PVD seen by OCT in comparison to no eyes demonstrated by FFA, In the IGS group [10 eyes], there were 3 eyes with different stages of PVD seen by OCT in comparison to no eyes demonstrated by FFA, In the CNV group [17 eyes], there were 4 eyes with different stages of PVD seen by OCT in comparison to no eyes demonstrated by FFA, ERM seen by OCT of different stages in 3 eyes while in FFA one eye only, In the RP group [10 eyes], there were 2 eyes with different stages of PVD seen by OCT in comparison to no eyes demonstrated by FFA. In the TME group [7 eyes], there were 3 eyes with different stages of PVD seen by OCT in comparison to no eyes demonstrated by FFA, ERM seen by OCT and FFA of different stages in 4 eyes. OCT provided us with valuable information on the retinal morphologic changes associated with ME of different etiologies and analyzing vitreomacular relationship and detecting macular SRD undetectable on biomicroscopy and FFA

Clinical study of myopic eyes [pachymentry, corneal tobography and ultrasonography]

One hundred and thirty-four eyes of sixty-eight patients of both sexes with age ranged from 18 to 45 years and degree of myopia from 1.5 to 18.0 D were examined before refractive surgery with ultrasonic pachymeter, computed corneal topography and A-Scan ultrasonography. From pachymetric, ultrasonographic and corneal topographic results highly significant relationship between degree of myopia and axial length of the eye was found. Also, insignificant relationship between degree of myopia and both anterior chamber depth and lens thickness was detected. A weak negative relationship between central and paracentral corneal thickness and maximum corneal curvature and insignificant relationship between age and corneal thickness were found. Corneal thickness is less in females than males, but of insignificant value. The study revealed that there was a weak relationship between degree of myopia and central corneal thickness. An insignificant statistical difference between right and left eyes in pachymetric, ultrasonic and corneal curvatures values was found