Astigmatism is one of the most common refractive errors affecting vision. Learn more about its symptoms, causes, and treatment options and enjoy optical advice from our optician.
Our focus is on the distribution of corneal characteristics in the population; thus, we did not assess the impact of mid-peripheral astigmatism on vision, which may be considered a limitation of our study. However, the effect on visual acuity of the reported astigmatic changes may still be eva...
The Vision in Preschoolers study2 on children aged from 3 to 5 years in the US reported that 13.2% of eyes with untreated astigmatism of 1.0 D or greater and less than 2.0 D were amblyopic, and so were 19.6% of eyes with untreated astigmatism of 2.0 D or greater. Furthermore, ...
Vision Res. 2002;42(14):1809–24. Article PubMed Google Scholar Chan TCY, Wong ES, Chan JCK, Wang Y, Yu M, Maeda N, Jhanji V. Corneal backward scattering and higher-order aberrations in children with vernal keratoconjunctivitis and normal topography. Acta Ophthalmol. 2018;96(3):e327–...
Neglecting the real influence of the posterior corneal surface in vision-correction planning may not result in errors if the profiles of anterior and posterior surfaces follow each other. However, if there is a discrepancy between the two, the influence of the posterior surface on the total ...
Vision Research . 2008Harvey EM, Dobson V, Miller JM, Clifford-Donaldson CE. Changes in visual function following optical treat- ment of astigmatism-related amblyopia. Vision Res 2008;48(6):773-87.Harvey EM, Dobson V, Miller JM, Clifford-Donaldson CE. Changes in visual function following ...
Corneal refractive surgery for myopia results in an oblate shift with increased postoperative aberrations inversely affecting the quality of vision. Aspheric ablation profiles have been introduced to minimize such a problem. The aim of this study was to compare changes in corneal asphericity, central an...
Neglecting the real influence of the posterior corneal surface in vision-correction planning may not result in errors if the profiles of anterior and posterior surfaces follow each other. However, if there is a discrepancy between the two, the influence of the posterior surface on the total ...
Maria X Núñez Grupo de Investigacion Vision Sana, Clinica de Oftalmología de Cali, Universidad Javeriana, Cra 47 sur N 8c-94, Cali, Colombia Email ximena@visionsana.com Abstract: This project was aimed at achieving consensus on the management of astigmatism during cataract surgery by ophthalmo...
Thus, we postulate that the horizontal effect may shift towards an oblique effect over a period of four months in neurotypical children with normal vision, defined as normal Snellen letter acuity of 20/20. The null hypothesis was that there would be no change in the pattern of meridional ...