To determine the prevalence of refractive errors, lens opacity, ocular hypertension and color blindness in Tehran population.
To describe the familial aggregation of refractive errors, lens opacity, ocular hypertension, and color blindness within the study sample.
The objectives of this study are to describe the prevalence and causes of visual impairment in the population of Tehran city; the prevalence of refractive errors, lens opacity, ocular hypertension, and color blindness in this population, and also the familial aggregation of refractive errors, lens opacity, ocular hypertension, and color blindness within the study sample.
First, to evaluate the anatomic success rates of scleral buckling surgery in the treatment of rhegmatogenous retinal detachment and possible differences in outcome depending on patients' refractive error and lens status.
The LSM model uses one modeling equation for all the pixels, while the LUT method uses pixel-based models to reduce the error by lens distortion.
Particularly, even if the related parameters can be precisely measured, it is absolutely impossible to consider the error from lens distortion.
Thus, in the first experiment we tested this idea by investigating the interaction of the non-selective potassium channel blocker Ba2+ with the induction of refractive error by lens defocus.
In an earlier study, this was shown to induce large changes in the refractive error and lens thickness [ 11].
In general, each 1 degree error in lens alignment will reduce the effectiveness of the astigmatism correction by 3.33%.
They are a catalogue of aspiring masterpieces and glorious errors: blurs, lens flares, double exposures, overexposures, intruding shadows, touchingly awkward homespun pornography and amputated compositions.
