Cycloposition has been measured by various methods; however, fundus photography is the most reliable method to evaluate the torsion objectively. We did a prospective study to find out the disc foveal angle (DFA) and its variation in children without squint. We included 210 eyes of 105 children between the ages of 5-15 years. DFA was calculated using standard technique after taking a fundus photograph. The cycloplegic refraction was done and compared. The mean age was 10.6 ± 2.5 years. Mean DFA in right eye (RE) was 6.49 ± 3.25° (0-13°) and in left eye (LE) was 5.80 ± 3.29° (0-12°). The difference between the RE and LE was statistically not significant (P=0.131) (mean 1.15 ±1.39°). Mean DFA in emmetropic children was 6.1° ± 3.4° (n=112 eyes). DFA varies widely in children. The difference observed in DFA measurement for eyes with various refractive errors were compared with DFA measurements for emmetropic eyes.
We report on a male infant with bilateral microphthalmia, esophageal atresia, and cryptorchidism. To our knowledge only 4 cases with a similar combination of congenital abnormalities have been previously reported, and it is likely that this represents a distinct entity. We suggest the name "anophthalmia-esophageal-genital-syndrome."
Floating drug delivery system (FDDS) helps to improve the buoyancy property of the drug over the gastric fluids and hence maintain the longer duration of action. It is helpful in minimizing the dosing frequency. The density of dosage form must be less than the density of gastric contents (1.004 gm/ml) in FDDS. It may effervescent or non-effervescent system. The drugs having narrow absorption window in GIT is good candidate for the floating drug delivery system. The main objective of writing this review article is to compile the recent literature with special focus on classification, method of preparation, mechanism of action advantages and disadvantages.
Keywords: Floating drug delivery system, Sustained release, controlled release, Floating tablet, Evaluation, Application, Gastro-retentive drug delivery system.
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