The Spectacles Thread. - Part 2

[GANGSTERKIA]

Sorry boss, dont tekan me. I dont log in and follow your lectures here all the time woh. Missed out your classes.

So are these digital lens also work quite similarly to progressives?? Means if im early 40s i assume have early presbyopes can just wear this type of digital lens right?

Is it ok to still rotate between pure SV lens and digital lens?

Yes, they work on the same principle, eyes roll down to read, mid side for intermediate(computer). Usually i term 37-43 early presbyopes, once you grow out of that group then you should consider progressives. Eyezen only up to +1.10D of addition power IIRC. Thus if you are 43 and above... i believe ''minimally'' +1.25 is needed or +1.50 or else you have to keep pushing your glasses up.

 

[GANGSTERKIA]

More comfy but compromise on clarity right?

Maybe last time the optician smoked me. Told me zeiss individual SV also incorporated anti fatigue.

They already say SV=single vision, so wont have antifatigue, maybe blueprotect to reduce strain on eyes when using electronic devices.

 

[GANGSTERKIA]

Paging for gansterkia boss urgently.

I have a query with the essilor eyezen lens which i made. When i push my frame very high up i can see very clear but when the frame rests back at normal height on my nose the vision becomes not so clear. Is this normal?

When you say see clear, do you refer to intermediate or near? But i feel your Addition power probably not enough

 

[GANGSTERKIA]

Hi gansterkia, do you mean both near and far cant see clearly because for near vison the + power increases and for distance vision the - power also increases?

How about intermediate vision? Is laptop distance about 45cm considered intermediate? Watching tv about 2-3 metres away considered far distance?

2-3 Metres considered more to distance already. 45cm abit grey area, might be near to some and intermediate to some.

yes to your first qns too.

 

[Seannie]

Yes, they work on the same principle, eyes roll down to read, mid side for intermediate(computer). Usually i term 37-43 early presbyopes, once you grow out of that group then you should consider progressives. Eyezen only up to +1.10D of addition power IIRC. Thus if you are 43 and above... i believe ''minimally'' +1.25 is needed or +1.50 or else you have to keep pushing your glasses up.

Sorry, why need to keep pushing glasses up then can read clearly? Can explain? Is it because the power at bottom of lens has more + power thats why need to push up so that can see better with more + ?

 

[Seannie]

When you say see clear, do you refer to intermediate or near? But i feel your Addition power probably not enough

Near, intermediate and far all same. If push glasses up all become much clearer irregardless of distance. Like that means what?

 

[GANGSTERKIA]

Means fitting height do wrong(dotting). Too Low already. You are naturally far sighted? Or short?

Near, intermediate and far all same. If push glasses up all become much clearer irregardless of distance. Like that means what?

 

[GANGSTERKIA]

Reading power is as the lower segment of the lens. It is called a progressive as the power progressives “reduces” down the lens. Thus when you bring the glasses up, you are reading from the lower portion of the lens.
And yea to your second half of your qns. You are right!

Sorry, why need to keep pushing glasses up then can read clearly? Can explain? Is it because the power at bottom of lens has more + power thats why need to push up so that can see better with more + ?

 

[Seannie]

Means fitting height do wrong(dotting). Too Low already. You are naturally far sighted? Or short?

Short sighted. Dotting means the round circle thing that can be seen on the lenses?

 

[Seannie]

Reading power is as the lower segment of the lens. It is called a progressive as the power progressives “reduces” down the lens. Thus when you bring the glasses up, you are reading from the lower portion of the lens.
And yea to your second half of your qns. You are right!

For me, when holding glasses high up, not only near vision reading segment is very clear. Even intermediate and far vision becomes much clearer. Why is this so? Im confused.

 

[peaceheart]

Reading power is as the lower segment of the lens. It is called a progressive as the power progressives “reduces” down the lens. Thus when you bring the glasses up, you are reading from the lower portion of the lens.
And yea to your second half of your qns. You are right!

Lowe segment of the lens has more or less power?

 

[thegardens3b]

Lowe segment of the lens has more or less power?

more +ve power

 

[Seannie]

more +ve power

In layman terms means more lao hua?
In actual technicality does that means the lower segment of lens has reduced myopic power (-) to counteract the increase in (+)?

Is that how it works for someone who originally only has myopia?

Means upper segment of lens increase (-) then middle segment increase a bit (+) and lower segment increase more (+)??

 

[peaceheart]

more +ve power

I'm confused. I'm assuming we are talking about myopia aka shortsightness where you can see near items clearly. If so, why need more power at lower segment of lens for reading /seeing things up close?

 

[Seannie]

I'm confused. I'm assuming we are talking about myopia aka shortsightness where you can see near items clearly. If so, why need more power at lower segment of lens for reading /seeing things up close?

More (+) power. Not more (-) power.

(+) is for lao hua. (-) is for myopia.

 

[peaceheart]

More (+) power. Not more (-) power.

(+) is for lao hua. (-) is for myopia.

Oh!!! "+"!! Ok, my mistake

 

[Seannie]

Lets say i have laohua +150

Then my myopia is -750

Does it mean upper lens segment -800 for distance, middle segment -700 for intermediate, then lower segment (reading) -600 ?

-750 + 150 = 600.

 

[GANGSTERKIA]

In layman terms means more lao hua?
In actual technicality does that means the lower segment of lens has reduced myopic power (-) to counteract the increase in (+)?

Is that how it works for someone who originally only has myopia?

Means upper segment of lens increase (-) then middle segment increase a bit (+) and lower segment increase more (+)??

ok lets look at this from this perspective. Imagine you are -3.00 degree, And you have an addition of +1.50(laohua/presbyopia).

The top part of your lenses is -3.00, mid is about -2.00 bottom is -1.50. Inbetween the top to mid, mid to bottom there is a slow progression of -2.75/-2.50/-2.25 all the way to -1.50. You kind of get the picture? Thus the lower portion of the lens which is -1.50 is your ''resultant'' reading power.

 

[GANGSTERKIA]

For me, when holding glasses high up, not only near vision reading segment is very clear. Even intermediate and far vision becomes much clearer. Why is this so? Im confused.

If that is the case, and you are a short-sighted individual/Myope, likely the power given you is too high, thus when you raise the frame/lenses you are looking through a lower power segment. THAT or, your frame might be sitting too close to your face, thus pushing it further will induce a more (+) power setting for you.

 

[Seannie]

If that is the case, and you are a short-sighted individual/Myope, likely the power given you is too high, thus when you raise the frame/lenses you are looking through a lower power segment. THAT or, your frame might be sitting too close to your face, thus pushing it further will induce a more (+) power setting for you.

My myopia power has been constant and clear for past 20yrs so dont think the myopic power is too high. I think more likely is the 2nd scenario whereby pushing my frame up equates to pushing it farther from my eyes thus inducing a more (+) setting?

In other words, do u mean the (+) power in my eyezen lens not strong enough? Wow. If this is true then all my SV lens all will be too blur liao.