The prediction error was calculated as the difference between the predicted and the measured refraction 1 month postoperatively.
RESULTS: Forty-three consecutive patients were enrolled. The mean arithmetic error was zero for all combinations of
measurements due to constant optimization. Using the Hoffer Q formula, the mean absolute prediction errors were 0.23 diopters GSI-IX in vivo (D) +/- 0.22 (SD) for the corneal topographer simulated K, 0.21 +/- 0.18 D for the Scheimpflug simulated K, and 0.27 +/- 0.20 D for the Scheimpflug total corneal power (P>.05). No statistically significant different results (compared with the Hoffer Q formula) were obtained with the Holladay 1 and SRK/T formulas.
CONCLUSIONS: Both devices provided corneal power measurements that led to accurate IOL power
calculation. The total corneal power by the dual Scheimpflug system is the first corneal power measurement shown to lead to accurate IOL power calculation without using the standard keratometric index.”
“In this study, STA-9090 chemical structure we examined the effect of alkali treatment and its variables, namely, the time (2, 4, 6, or 8 h) and the concentration of alkali (1, 5, or 17.5% w/w), on the linear density, strength, and stress-relaxation properties of jute fiber. It was demonstrated that this kind of treatment led to the creation of several voids and fiber fibrillation. Properties were measured for the alkali-treated and dewaxed fibers. The linear density and tenacity of the fibers were reduced at higher alkali concentration and at longer dipping times. The strength increased with treatment with mild alkali and decreased with treatment
with the strong alkali. A very low alkali treatment (1%) rendered low relaxation. At a 5% alkali concentration, interfibrillar matrix softening also played an important role and was prominent in the stress-relaxation behavior. The stress-relaxation value was much higher in the fibers treated with 17.5% NaOH LY3023414 nmr compared to the dewaxed fibers; this was probably due to a loss in the fibrillar arrangement. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 123: 1348-1358, 2012″
“Objective: The purpose of this study was to examine whether social network factors predict HIV and Hepatitis C (HCV) serostatus after controlling for individual-level factors at baseline among a cohort of male injection drug users in Chennai, India.
Methods: The sample, which was recruited through street outreach, consists of 1078 males who reported having injected drugs in the last 6 months.