Close started to go when I hit 40 between presbyopia, hereditary hypermetropia and staring at computer screens all day long for years, and then astigmatism asserted itself over the following decade. I need those adaptive corrective implants to get perfected before I need lens replacements due to ...
b. Near visual acuity of any degree that does not correct to 20/40 in the better eye. c. Refractive error (hyperopia, myopia, astigmatism), in any spherical equivalent of worse than -8.00 or +8.00 diopters; if ordinary spectacles cause discomfort by reason of ghost images or prismatic dis...