Awesome! The spreading word!
I could feel Jake’s urge to enlighten when the reference to weight training was made. Thinking our eyes are weak is a big obstacle. They’re highly over tensed. Getting back to normal eyesight is a process of creating the right circumstances and allowing suitable use.
I can’t agree that close-up can’t be a relaxed activity or that aboriginals spent a far less amount of time doing close-up activities (they made weapons, clothes, embroidery, paintings etc.).
It’s more to do with the nature of close-up. Reading is very two dimensional (one focal plane) whereas playing with lego, knitting, jigsaws require a lot more ciliary activity.
A painter’s hand rarely grows tired from hours of holding a brush. The muscles are always moving. If the hand was held still for a long time while gripping the paintbrush, it would gradually lock up just as in ciliary spasm.
This business of the eyeball ‘growing longer’ and then in almost the same breath, ‘axial length has been seen to change in the course of an hour’ creates a lot of vagueness.
An eyeball which has ‘grown longer’ can only be interpreted as a permanent, organic state.
So then how could reversal be possible?
Can I un-grow my fingernails?
‘The extra ocular muscles have nothing to do with refraction’
I beg to differ because;
Perfect sight requires very delicate and precise eyeball movement (especially distance vision) .
This is carried out by the recti muscles (sluggish in myopia) and this is why, in normal sight, small distant black letters seem to move. Constant re-targeting to maintain information coming from retina to brain to ciliary.
Ciliary staying relaxed and pulling the suspensory ligaments to bring the lens into a flatter shape.
Close-up vision; ciliary engages to release tension on ligaments to allow lens to bulge appropriately.
Single focal plane close up tempts ciliary spasm, pseudo myopia ensues and if not addressed the oblique muscles step in to alleviate the ciliary and squeeze the eyeball into a longer shape. This becomes a chronic state as evidenced by the remaining myopia when ciliary spasm and lenses which are over prescribed have been removed.
Appropriate stimulus encourages the obliques to relax and the recti to tone up and perform as intended. This allows the eyeball to resume an emmetropic state, not to ‘un-grow’ itself.
Ultra rant almost finished…
I can’t think of a way that plus lens use in myopia could trigger presbyopia. Used at reading distance to make close-up vision slightly worse when low myopia doesn’t allow print pushing.
I’d say just occasionally and in full daylight. That Todd Becker dude sometimes does it and he’s 20/10 I heard.
Finally, when I was about 15 years old, my emmetropic friend put on my -4.5ish glasses one night and said if he ‘tensed’ his eyes he could see clearly through them. Of course he was simply focusing for near point while maintaining the same convergence. Asking a presbyope to wear -0.5, for example and look at and then bring into focus a distant object may help to re-train their accommodative abilities.
I’d like to try it on the missis but she only believes what she sees on television.