The Spectacles Thread. - Part 2

[Optometrist]

frame got warranty? just every often change before spoil


Read HWZ Forum Rules!

Branded frames with a local agent definitely have a 1 yr from date of purchase. Parallel imported frames not too sure though.
Other brands of frame, yes and no, Gotta ask before making a purchase.

 

[higoodhi]

1) Anti fatigue works by reducing the prescription at the reading portion (aka boost zone) to provide a more comfortable read, hence using just the Eyezen start might not be as effective.

2) -05.00Ds is myopia, -01.00Ds is astigmatism, 089 is the angle where you need the additional -1.00 Ds astigmatism to see clear. (think of it as like a protractor from 0 degrees to 180 degrees) easier to visualize this way.

3) Yes, certain lens surfacing methods (Lenti-Cut) is able to reduce the side thickness. usually used in high prescription (>-10.00Ds)

4) thickness of a lens is affected by the difference between your pupillary distance vs frame size.
E.g. pupillary distance 60mm, choosing a spectacles with 70mm frame size will have a thicker lens than using the 63mm frame size ones.
Usually your optician/optometrist would sound off that the lenses would be thick, if clients insist on using a much bigger frame.

Hi Optometrist,

Thanks for your advice.

what is your definition of thick?

Chosen a larger frame so as that it will not cause a mark on both side of my head. This is a sign of using a smaller frame?

After using a larger frame now only one side of my head got mark, i believe the spectacle arm can adjust the angle but as i am now using Oakley frame, the arm is straight without the hook i afraid after adjusting the grip will not be there. . .

Thanks

 

[Optometrist]

I'll use this 2 frames as an example: https://ibb.co/GCmmV5n
Black frame has bigger face.

big frame, straight temples: https://ibb.co/SR10mgC
Smaller frame, curved temples: https://ibb.co/XzwmrCr

both stacked together: https://ibb.co/42yxmdH

The smaller frame, curved temples would be better for you.
No specific brand ba, just look out for this feature when frame hunting

Maybe refer to this post to better understand the types of temples available.
Find a frame with curved temples(legs) to relieve pressure on the side of head.

Hi Optometrist,

Thanks for your advice.

what is your definition of thick?

Chosen a larger frame so as that it will not cause a mark on both side of my head. This is a sign of using a smaller frame?

After using a larger frame now only one side of my head got mark, i believe the spectacle arm can adjust the angle but as i am now using Oakley frame, the arm is straight without the hook i afraid after adjusting the grip will not be there. . .

Thanks

Thick refers to side thickness

 

[higoodhi]

Maybe refer to this post to better understand the types of temples available.
Find a frame with curved temples(legs) to relieve pressure on the side of head.

Thick refers to side thickness

Hi Optometrist,

Seldom see curved temples and what i meant is that you consider how many mm as thick ?

Thanks

 

[Optometrist]

Hi Optometrist,

Seldom see curved temples and what i meant is that you consider how many mm as thick ?

Thanks

thickness can be quite individual. 5 mm could be thick to some people but some others will feel its quite acceptable.

End of day, it depends on the user's perception. To me, anything that protrudes 3mm from frame is considered thick. Hence will recommend to find smaller frame, use higher index or find a thicker frame to hide it.

 

[jhtan85]

Hi @GANGSTERKIA

I am new to this thread and would appreciate if you could advise the name of the optometrists at the usual locations I’ve read in previous posts that you would recommend please.

thanks much in advance!

 

[GANGSTERKIA]

Hi @GANGSTERKIA

I am new to this thread and would appreciate if you could advise the name of the optometrists at the usual locations I’ve read in previous posts that you would recommend please.

thanks much in advance!

Hi there!
Sure I will pm you the location and optometrists to look for

 

[paul02]

Hi all! Did an eye test after almost three years because I had some trouble focusing on stuff at arms-length distancing and it seems like my left eye has improved.

Am currently using Crizal (w/transitions) lenses and was contemplating on changing glasses and was quoted about $26X for Crizal or $30X for Zeiss (was thinking of trying Zeiss) lenses.

My only gripe with the current frames are that I have an oblong face shape with an oily T-region so my frames keep slipping down. Pressing them up against the top my nose works but I get fatigue and a mark due to the pressure of keeping it at that spot.

Any opinion on the choices and prices along with other aspects I should consider?

 

[Optometrist]

Hi all! Did an eye test after almost three years because I had some trouble focusing on stuff at arms-length distancing and it seems like my left eye has improved.

Am currently using Crizal (w/transitions) lenses and was contemplating on changing glasses and was quoted about $26X for Crizal or $30X for Zeiss (was thinking of trying Zeiss) lenses.

My only gripe with the current frames are that I have an oblong face shape with an oily T-region so my frames keep slipping down. Pressing them up against the top my nose works but I get fatigue and a mark due to the pressure of keeping it at that spot.

Any opinion on the choices and prices along with other aspects I should consider?

trouble focusing stuff at arms length from the start of the day or only towards end of it?
Start of day => could be presbyopia, affects not only arms length but also near vision. probably need lenses that have a boost zone or progressives.
Towards end of day => eye muscle fatigue leading to inability to focus properly. (Search for eye strain or phoria singapore on google to understand more) Adequate rest together with prism lenses would be able to alleviate symptoms in most cases.

Are the Crizal & zeiss lenses quoted able to resolve your issue?

If frames keeps lipping down, i suggest going for very light frames (e.g. Korean Ultem/TR90 frames) with nose support. With proper adjustment, it should stick to the face easier than normal metal ones

 

[paul02]

trouble focusing stuff at arms length from the start of the day or only towards end of it?
Start of day => could be presbyopia, affects not only arms length but also near vision. probably need lenses that have a boost zone or progressives.
Towards end of day => eye muscle fatigue leading to inability to focus properly. (Search for eye strain or phoria singapore on google to understand more) Adequate rest together with prism lenses would be able to alleviate symptoms in most cases.

Mid-day, optician said it is also possible due to being busy and stressed at work that can contribute with the issue and advises to take breaks when working on the computer.

Are the Crizal & zeiss lenses quoted able to resolve your issue?

Don't know. My left eye degree dropped so maybe the correction is too harsh and putting a strain on that eye. I am wondering if I can get better pricing outside this shop.

If frames keeps lipping down, i suggest going for very light frames (e.g. Korean Ultem/TR90 frames) with nose support. With proper adjustment, it should stick to the face easier than normal metal ones

Will keep this in consideration. I prefer those without nose support because it creates more distance between my eyes and the lens, so when I need to look at something above my eye-level, I have to tilt my head more.

Maybe larger lenses might help with that.

 

[Optometrist]

Mid-day, optician said it is also possible due to being busy and stressed at work that can contribute with the issue and advises to take breaks when working on the computer.


Don't know. My left eye degree dropped so maybe the correction is too harsh and putting a strain on that eye. I am wondering if I can get better pricing outside this shop.


Will keep this in consideration. I prefer those without nose support because it creates more distance between my eyes and the lens, so when I need to look at something above my eye-level, I have to tilt my head more.

Maybe larger lenses might help with that.

Since the inability to focus starts mid day, chances are its due to eye fatigue (Decompensated Phoria). look for specialized optical shops (Less than 5 in SG) that are able to detect, prescribe customized lenses & manage your eye condition instead. Focus comfortably throughout the day should be address 1st before brands.

If I were you, I'ld choose to resolve your issue instead of just jumping into another Crizal/Zeiss lens. (inability to focus will still persist)

 

[paul02]

Since the inability to focus starts mid day, chances are its due to eye fatigue (Decompensated Phoria). look for specialized optical shops (Less than 5 in SG) that are able to detect, prescribe customized lenses & manage your eye condition instead. Focus comfortably throughout the day should be address 1st before brands.

If I were you, I'ld choose to resolve your issue instead of just jumping into another Crizal/Zeiss lens. (inability to focus will still persist)

Agreed, thank you for sharing. I wouldn't consider my condition to be serious (likely due to eye fatigue) as the issues aren't happening consistently.

Regardless, my vision has improved (and it's been three years since) and am considering the two brand of lenses, trying to get something that is good for my eyes after all.

 

[Optometrist]

Agreed, thank you for sharing. I wouldn't consider my condition to be serious (likely due to eye fatigue) as the issues aren't happening consistently.

Regardless, my vision has improved (and it's been three years since) and am considering the two brand of lenses, trying to get something that is good for my eyes after all.

Just keep an eye on the fatigue.

The usual progression starts with inability to focus at distance/near during the evening time, then gets earlier (E,g, used to start @ 9pm => then 7pm => slowly creeping to 4pm)

 

[paul02]

Just keep an eye on the fatigue.

The usual progression starts with inability to focus at distance/near during the evening time, then gets earlier (E,g, used to start @ 9pm => then 7pm => slowly creeping to 4pm)

Will do! I feel like the fatigue might be due to long hours on my computer and phone which are used extensively for work (and play). Are blue light filters on lenses worth it in 2022?

I remember it being mostly a gimmick back in 2018-2019 days.

 

[Optometrist]

Will do! I feel like the fatigue might be due to long hours on my computer and phone which are used extensively for work (and play). Are blue light filters on lenses worth it in 2022?

I remember it being mostly a gimmick back in 2018-2019 days.

Well according to Prof. Dr. Richard H.W. Funk (Medical Faculty Carl-Gustav-Carus Technical University of Dresden) & Specially Appointed Prof. Dr. Amane Koizumi (National Institutes of Natural Science), High Energy Visible (HEV) light (~400-420nm) is the dangerous bandwidth that causes an early onset of Age-related Macular Degeneration (AMD) & cataract. There are lenses in the market that has an inbuilt function to absorb up to 94% of such light from reaching the eyes.

Some brands in the market still sells lenses that comes with a blue coat. These have a different function & generally doesn't block out a lot of the harmful HEV light. These lenses works by reducing the amount of light (~20-30%) reaching the eye from whole Blue (400-550nm) bandwidth.

In summary,
Block out harmful light => Go for lenses that absorbs a lot of the HEV light (Up to 94%)
Reduce light intensity => Go for lenses with a blue coat.

 

[paul02]

Well according to Prof. Dr. Richard H.W. Funk (Medical Faculty Carl-Gustav-Carus Technical University of Dresden) & Specially Appointed Prof. Dr. Amane Koizumi (National Institutes of Natural Science), High Energy Visible (HEV) light (~400-420nm) is the dangerous bandwidth that causes an early onset of Age-related Macular Degeneration (AMD) & cataract. There are lenses in the market that has an inbuilt function to absorb up to 94% of such light from reaching the eyes.

Some brands in the market still sells lenses that comes with a blue coat. These have a different function & generally doesn't block out a lot of the harmful HEV light. These lenses works by reducing the amount of light (~20-30%) reaching the eye from whole Blue (400-550nm) bandwidth.

In summary,
Block out harmful light => Go for lenses that absorbs a lot of the HEV light (Up to 94%)
Reduce light intensity => Go for lenses with a blue coat.

If that’s the case, it seems only Kodak EvoBlue has that blue filter plus photo-chromatic filter.

Was looking at Zeiss and Crizal, guess this will be another option.

 

[Optometrist]

If that’s the case, it seems only Kodak EvoBlue has that blue filter plus photo-chromatic filter.

Was looking at Zeiss and Crizal, guess this will be another option.

for better lens quality, you can try asking for Asahi UV420 photochromic lenses. Has smoother lens surfacing & finishing.

Pro of UV420 photochromic lenses:
Absorbs HEV light and turns dark

Con of UV420 photochromic lenses:
Doesn't turn as dark as transition/photofusion as most of the HEV is absorbed

If you hardly go outdoor then UV420 photochromic lenses are more suitable for you

 

[paul02]

for better lens quality, you can try asking for Asahi UV420 photochromic lenses. Has smoother lens surfacing & finishing.

Pro of UV420 photochromic lenses:
Absorbs HEV light and turns dark

Con of UV420 photochromic lenses:
Doesn't turn as dark as transition/photofusion as most of the HEV is absorbed

If you hardly go outdoor then UV420 photochromic lenses are more suitable for you

Mixed-usage here, but generally indoors more.

By the way, I still feel like its gimmicky. If those studies (got source on how the it was carried out?) had much weight to them, then wouldn't it result in everyone (even those who do not need prescription glasses) being recommended to wear glasses with such technology just to prevent this AMD and cataract?

 

[Optometrist]

Mixed-usage here, but generally indoors more.

By the way, I still feel like its gimmicky. If those studies (got source on how the it was carried out?) had much weight to them, then wouldn't it result in everyone (even those who do not need prescription glasses) being recommended to wear glasses with such technology just to prevent this AMD and cataract?

when UV400 lenses were 1st introduced, most people are also hesitant to try as its a new thing and cant really see or tell the difference. Now everyone is recommended to put on shades when out in the sun to block UV400.

Tokai Opt is the 1st company in the world to produce a 94% HEV light absorb lens. Asahi followed suit, then kodak & the most recent ones, Essilor (Blue UV capture). In time to come, UV420 lenses will probably replace UV400 lenses in the market & be the standard for UV & HEV protection. Only time can tell.

 

[higoodhi]

thickness can be quite individual. 5 mm could be thick to some people but some others will feel its quite acceptable.

End of day, it depends on the user's perception. To me, anything that protrudes 3mm from frame is considered thick. Hence will recommend to find smaller frame, use higher index or find a thicker frame to hide it.

Hi Optometrist,

If everything remains the same (1.67 index lenes, diameter etc) but different in the brand (e.g Eyezen & those normal lenses with green light/filter) will there be any different in the thickness ?

If yes, which one will be more thick ? Eyezen or those normal lenses with green light/filter ?

Thanks