ABSTRACT
Purpose: To compare central corneal thickness (CCT) measurements obtained by the AL-Scan, Lenstar LS900, Galilei, and ultrasound pachymetry (UP) in normal and cataractous eyes. Methods: Eighty eyes of healthy subjects were included in the study. Each subject was assessed by four different methods of measurements using the AL-Scan, Lenstar LS900, Galilei, and UP by a single examiner. To assess the intraobserver repeatability, three consecutive measurements were taken for the AL-Scan. Results: The mean CCT [± standard deviation (SD)] for the AL-Scan, Lenstar LS900, Galilei, and UP were 554.6 ± 30.9 ?m, 542.9 ± 31.3 ?m, 570.7 ± 30 ?m, and 552.7 ± 32.8 ?m, respectively. The differences between pairs of mean CCT for the methods are statistically significant for the pairs of Galilei–UP, AL-Scan–Galilei, and Lenstar LS900–Galilei. Bland–Altman plots showed that AL-Scan–UP have the closest agreement, followed by Lenstar–UP and AL-Scan–Lenstar. Galilei was found to have the poorest agreement with the other three methods. The intraobserver repeatability of the AL-Scan was very good with an intraclass correlation coefficient (ICC) of 0.980. Conclusion: We found that CCT measurements between the AL-Scan–UP, Lenstar LS900–UP, and AL-Scan–Lenstar LS900 showed very strong correlation and comparable agreement. AL-Scan–UP showed the closest agreement and these devices can be used interchangeably in clinical practice. Galilei significantly showed higher value of CCT compared to other methods. It was also observed that the Al-Scan had excellent intraobserver repeatability.
ABSTRACT
Megalourethra, a rare congenital disorder involving the anterior urethra, is subdivided into two types: Fusiform and scaphoid. Two cases of scaphoid type megalourethra are reported. The first patient, a 5-weeks-old infant diagnosed at birth as having the prune belly syndrome was admitted to the hospital with vomiting and failure to thrive. Intravenous pyelogram revealed marked dilatation of the left ureter and a bladder diverticulum. A penile urethrostomy was performed. The second patient, born to healthy parents after an uneventful pregnancy and delivery, was found to have an enlarged and deformed penis. The baby voided with a poor stream and a concomitant swelling of the penis was noted. Retrograde uretrography showed a sac-like dilatation of the penile urethra. Surgical revision was carried out a 2 stage procedure and was completed (Nesbitt's operation) after 4 months. The patient did well postoperatively and voided with a normal stream without any abnormality of the penile shaft.