Other people do not see clearly because their eyes are not exactly the right shape.They have what is called astigmatism(散光).This,too,can be corrected by glasses.Some people's eyes become cloudy because of cataracts(白内障).Long ago these people often became blind.Now however,it is possible...
Not sure about eyeglass accomodation (I'm near sighted...with astigmatism, and use 1.0+ reading glasses), no eyeglasses needed with the Aero, which is what I use, and have been quite happy with it. Yes, there are FOV limitations, but the clarity is quite...
Astigmatism The eye is shaped more like a football than a basketball Focusing error that causes blur in one direction Binocular vision Equal vision in both eyes Provides stereoscopic or 3D vision Good to have a ‘spare’ eye Depth perception Important for good hand-eye coordination, eg –putting...
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...