The Spectacles Thread. - Part 2

[talonn]

In terms of brand hierarchy/price, which is from lowest to highest? Dita/linberg/ic berlin

 

[codyruru]

Hello Sifu,

Currently am wearing progressive lenses
Rodenstock impression 2 (1.6 index ) & Pentax expert (1.6 index ) and older pair Asahi lite Masterpiece (1.6 index )

Officelens progressive
Zeiss officelens Superb 1.6 index & Asahi lite Maxisov 1.56 index

in term of lens thickness ,why each lens is different ?
is it Hard lens is more thinner and soft lens much thicker?

compare to my Rodenstock and Zeiss ..Rodenstock is very much thinner!

 

[Optometrist]

Hello Sifu,

Currently am wearing progressive lenses
Rodenstock impression 2 (1.6 index ) & Pentax expert (1.6 index ) and older pair Asahi lite Masterpiece (1.6 index )

Officelens progressive
Ziess officelens Superb 1.6 index & Asahi lite Maxisov 1.56 index

in term of lens thickness ,why each lens is different ?
is it Hard lens is more thinner and soft lens much thicker?

compare to my Rodenstock and Ziess ..Rodenstock is very much thinner!

Hi!

Couple of factors that affect thickness of lenses
1. Lens material (Clear, Transition, Blue absorb) & Index (1.56, 1.61, 1.67, 1.74, Etc..)
Higher index = thinner lens | Clear lens is usually made thinner than transition/Blue absorb

2. Frame Size
smaller frame = thinner lens

3. Lens Center thickness
Thinner center = thinner lens but the lens will warp easily, causing blur/distorted vision

4. Lens Front curve
Flatter curve = Thinner lens. But too flat will cause "Fishbowl" effect, leading to headache/nausea

Have to see what is more important to you. thinner lens or comfortable lenses.
Out of all the brands above, Asahi-Lite will be slightly thicker as they place more emphasis on visual comfort than aesthetics.

 

[codyruru]

Hi!

Couple of factors that affect thickness of lenses
1. Lens material (Clear, Transition, Blue absorb) & Index (1.56, 1.61, 1.67, 1.74, Etc..)
Higher index = thinner lens | Clear lens is usually made thinner than transition/Blue absorb

2. Frame Size
smaller frame = thinner lens

3. Lens Center thickness
Thinner center = thinner lens but the lens will warp easily, causing blur/distorted vision

4. Lens Front curve
Flatter curve = Thinner lens. But too flat will cause "Fishbowl" effect, leading to headache/nausea

Have to see what is more important to you. thinner lens or comfortable lenses.
Out of all the brands above, Asahi-Lite will be slightly thicker as they place more emphasis on visual comfort than aesthetics.

Thank Optometrist

My progressive lens Rodenstock 1.6 clear frame Ic berlin 50-20-145 & Pentax 1.6 with sensity, frame Koreans 51-19-146 both lens prescription are the same R +1.75 L+ 2.25 add +2.00
but the center thickness both are not the same , is it soft lens thicker ?
sorry im a noob .

 

[Optometrist]

Thank Optometrist

My progressive lens Rodenstock 1.6 clear frame Ic berlin 50-20-145 & Pentax 1.6 with sensity, frame Koreans 51-19-146 both lens prescription are the same R +1.75 L+ 2.25 add +2.00
but the center thickness both are not the same , is it soft lens thicker ?
sorry im a noob .

Since both are 1.6 index, the lens hardness is the same. IC! berlin frames are mostly rimlon (Meaning there's a groove in the lens for the frame to fit in) Rimlon lenses are usually thicker, otherwise it cannot hold onto the frame.

If the center thickness is less than 0.7mm difference, there should be minimal Image magnification difference to user.

 

[codyruru]

Since both are 1.6 index, the lens hardness is the same. IC! berlin frames are mostly rimlon (Meaning there's a groove in the lens for the frame to fit in) Rimlon lenses are usually thicker, otherwise it cannot hold onto the frame.

If the center thickness is less than 0.7mm difference, there should be minimal Image magnification difference to user.

Hi Optometries

Final question
can i say Japanese lenses Soft lenes Asahi and Pentax for progressive are thicker compare to Germany hard lenes Rodenstock & Zeiss which are much thinner?

 

[Optometrist]

Hi Optometries

Final question
can i say Japanese lenses Soft lenes Asahi and Pentax for progressive are thicker compare to Germany hard lenes Rodenstock & Zeiss which are much thinner?

Lower index lenses are softer, higher index are harder (more compressed)
If its 1.60 index, hardness would be same for both Japanese & German.

The method of processing makes a difference.
Difference lies in the center thickness, front curve & the person ordering the lenses.

We can calculate & customize Asahi Lenses to make it very thin too, if my clients has an issue with magnification effect

 

[acidcrash]

Hello experts..is it advisable to have 2 prescription pairs one for home and the other for work/leisure?

I was thinking when at home just use a basic lens no frills and for work/leisure photochromic+blue perhaps progressive?

Would constantly changing affect the eyes?

 

[gyver1985]

Dear all,

for transitions lens, is it better to go with Hoya or essilor?

Am comparing the

Hoya Nulux True form, Hoya Nulux V+ and the Essilor Transitions Gen 8.

However, each range got about $200 difference.

Can share which is more lasting? I heard they say Hoya is better and coating lasts longer.

Thank you

 

[jjinkoh]

anyone can recommend a shop for my nearsightness problem.

hai, age is catching up.

 

[Optometrist]

Dear all,

for transitions lens, is it better to go with Hoya or essilor?

Am comparing the

Hoya Nulux True form, Hoya Nulux V+ and the Essilor Transitions Gen 8.

However, each range got about $200 difference.

Can share which is more lasting? I heard they say Hoya is better and coating lasts longer.

Thank you

Hoya Nulux V+ is usually used for frame with slightly higher wrap angle.
If your specs is the normal curve type, Transitions Gen 8 or Hoya True Form Sensity would suffice. If your astigmatism is -1.50Ds or lower, the difference between the 2 type of lenses wouldn't be very visible.

Transition is a brand that sells transition blanks to lens companies.
E.g. sell to Essilor => Essilor Transition, Sell to Tokai => Tokai Transition
I'ld rather you go with Just Transition than Essilor Transition. The coating can last longer

 

[Optometrist]

Hello experts..is it advisable to have 2 prescription pairs one for home and the other for work/leisure?

I was thinking when at home just use a basic lens no frills and for work/leisure photochromic+blue perhaps progressive?

Would constantly changing affect the eyes?

constantly changing wouldn't affect the eyes. As the Presbyopia crosses the +1.75/+2.00Ds mark, many progressive lens wearer will start having 2 pairs of glasses
1 x SV or Distance Progressive (For home/Outdoor use)
1 x Office Lenses (For office use)

 

[joesph]

anyone can recommend a shop for my nearsightness problem.
hai, age is catching up.

daiso any difference?


Read HWZ Forum Rules!

 

[jjinkoh]

daiso any difference?


Read HWZ Forum Rules!

Oh, So it works on any pair?
Not sure is there a specific degree or other things to note.

 

[Optometrist]

Oh, So it works on any pair?
Not sure is there a specific degree or other things to note.

Off the shelf readers are good for short reading time (~20mins)
Some might start experiencing eye strain/discomfort after that.

 

[jjinkoh]

Off the shelf readers are good for short reading time (~20mins)
Some might start experiencing eye strain/discomfort after that.

so basically if to get prescripted pair will be better?
i dont think i would like to carry a pair of reading glasses everytime i need to read. TIA

 

[Optometrist]

so basically if to get prescripted pair will be better?
i dont think i would like to carry a pair of reading glasses everytime i need to read. TIA

Your presbyopia just started? Otherwise for people with higher presbyopia, they'll want to carry their reading glasses around cos bobian, can't see near.

 

[jjinkoh]

Your presbyopia just started? Otherwise for people with higher presbyopia, they'll want to carry their reading glasses around cos bobian, can't see near.

yes just started.
is there such thing as i can get a glasses just for reading while at the same time just use normally.

 

[Optometrist]

yes just started.
is there such thing as i can get a glasses just for reading while at the same time just use normally.

yup, that would be progressive lenses. But doubt you'll be using it often, and will eventually become a reading glasses for you (Use only when you want to read) In the end pay alot but hardly use

For most people without prescription at distance, a simple pair of reading glasses would be enough.
If you have multiple focus point (E.g. look at someone 1-2m away + read on the desktop computer + reading at near) then office lenses.

 

[jjinkoh]

yup, that would be progressive lenses. But doubt you'll be using it often, and will eventually become a reading glasses for you (Use only when you want to read) In the end pay alot but hardly use

For most people without prescription at distance, a simple pair of reading glasses would be enough.
If you have multiple focus point (E.g. look at someone 1-2m away + read on the desktop computer + reading at near) then office lens

thank you for your insight!
will ponder about it.