what the optician told you is a normal practice. children under 6, their nerves are still developing. so won\'t undergo OK lens treatment until 7. my boy started the treatment when he was nearly 7.
since your child is small, what you should do, at all times disregarding whether to take on the treatment, observe and correct her reading or playing habits. those healthy habits should be adopted at all times and can benefit the whole life.
does she read books too close, eg less than 30 cm?
take a rest every 20 mins after reading or doing hwk?
can she do outdoor activities eg going to a playground, every day for at least 30 mins? guess kinder kids have more free time.
does she often play with small parts toy too often or too long? eg Lego, beads?
hopefully correcting habits can buy you time and slow down her myopia growth?
then the next thing you do is looking up different options of controlling myopia.
to be honest, you have to prepare when you seek advice from ophthalmologist , they will certainly warn you against wearing OK lens no matter which age. because you need to understand in HK, only ophthalmologists can prescribe medicine, vs in countries such as Canada, they aren\'t separately, so both ophthalmologists and authorized opticians let patients wear OK lens. the common practice in HK used by ophthalmologists is to prescribe atropine 0.01-0.1%.
you can search info on internet regarding various methods. what I am trying to say is helping kids to form healthy lifestyle and habits on reading and using PC are by far most important. the next thing is after you gather different opinions , you choose the better options for your kids.
my girl wears OK lens, but my boy doesn\'t, depending on their situation. there are even newer approach, wearing soft lens as control, which I found more comfortable due to absence of those concerning OK lens, and also avoid using medication which isn\'t proved to be medically safe eg not fda approved.
BTW, I will be very surprised if polyvision doesn\'t offer you the options of Zeiss eyeglasses. my boy has a pair of such, but not Zeiss, it\'s also multifocal eyeglasses. they are good for young age.
your first question was asking for any other options, so it seemed you have not been informed of others, that\'s why we share our experience. anyway not Bad idea to seek doctor advice so that you know exactly their view. I have never heard of them supporting OK lens. for small kids indeed not many choices. myopia eyeglasses or atropine prescribed by doctor.
yes currently only one brand offering this, namely Cooper vision.
those are called bifocal or multifocal lens. you can search for recent findings about its effectiveness. it\'s more or less as effective as at least multifocal eyeglasses such as myovision etc, but less as effective as OK lens.