Anti fatigue lens review

Which anti-fatigue lenses are for you? A review and comparison

Hi, this is Sam from Pott Glasses. Today I’m going to review and compare 2 different anti fatigue lenses, Zeiss’ Digital Lenses and Hoya’s Sync-III lenses. Both of the lenses used would be of similar addition power, that is, +1.25 for Zeiss and +1.32 for Hoya for a more better comparison. But first, let’s have a brief introduction of anti fatigue lens.

What is anti fatigue lens

Anti fatigue lens is also known as relax lens. It aims to reduce the eyes’ workload for near vision activity such as reading and using digital devices. It is capable to doing so by providing a ‘reading power’ at the bottom of the lens. “Reading power” is normally slightly lower in comparison to “distance power” due to the phenomena known as accommodation . The idea of anti fatigue lens is to help wearer to read more comfortably and feel less tiring on the eyes by providing the suitable “reading power” at the bottom.

anti fatigue lens

image source : brandoneyes.com

Which anti fatigue lens is better?

Zeiss Digital Lenses (+1.25)

I’ve been using the Digital lenses for about 6 months now and its performance has been very. promising. There is barely any distortions when side glancing at distance and has a comfortable and wide near portion. I had no problems going about my day to day with them, driving, moving about, hanging out with friends and… you get the point. So for wearing adaptability and comfort I’d give it a 9/10.  

Maintenance-wise for the Zeiss lenses, I’d find that it doesn’t get finger prints on it very easily. This is useful to me as I tend to move my glasses up and down because my eyelids affected by eczema. Though for the amount of dust and debris that it collects over time of wear would be the expected amount. When that happens, I tend to blow the dust away, which usually doesn’t do anything. In the end, I’d still need to whip out my microfiber cloth to wipe my lenses. So that would be a 6/10 for maintenance.  

On the question of durability, I’d say that the DuraVision coating gets the job done pretty well. It doesn’t get scratched easily. On one of my trips, I was riding pillion on a bike with my glasses hanging on my collar. The rider stepped on the brake hard so it kinda got squished in between the rider and myself. For the lenses, it had a small snail trail scratch at the peripheral side of the lens. It doesn’t really affect my vision though, so I guess its fine. So yeah, durability wise I’d give it a 5/10.  

Now, on to the main point, how does it perform when you’re on the PC and devices? And I’d have to say quite good. My usual tasks on the PC would usually be watching youtube videos, reading articles and playing games. I find that the requirement for more detailed vision, the intermediate portion of the lenses would seem very narrow. Due to that, I always end up using the distance portion or the near portion to read articles.

It performs quite well when it involves dynamic vision. I personally play a lot of first person shooter games which involve a lot of darting my eyes around, looking at the HUD and situational awareness to spot enemy movements. The wide FOV helps for me because I’m using dual monitors. Devices like phones are pretty straightforward, the near portion encompasses the area where I look at my phone through. So for use with digital devices I’d give it a 6.5/10.  

Hoya Sync-III 13 (+1.32)

I’ve been using this lens for about 1 month now. Though I got it not long ago but I think I grasped the lens well enough to have an opinion about it. The addition power is slightly higher than Zeiss because they only have it in this range, but its similar to have a more fair comparison.  The wearing adaptability is not as good compared to the Digital lenses. This is mainly because the distance FOV is actually more narrow than Zeiss. I find that I need to rotate my head more towards the direction that my eyes are at to get a clearer picture. I am fine going about my day with the Sync-III but it just doesn’t feel as good as the Digital lenses. Hence, for that I’ll be giving this a score of 6/10.  

This lens is pretty low maintenance. But, I’m using the High Vision Long Life (HVLL) coating from Hoya which is known for being low maintenance, I cannot speak much on the HVP coating, which is the lower end coating for Hoya which I have no experience with it before. It works as well as Zeiss’s DuraVision in terms of fingerprint or oily smudges. Dust and debris cleaning wise, it is much more easier to clean off. Usually, blowing on the lenses already removes a good number off the lens. Although there’s some that needs to be wiped off but it’s still better than having to wipe it all the time. 7/10  

Durability-wise, it should be no contest as HVLL is known to be one of the best with scratch resistance. Small things like accidentally grazing the lenses with hard objects wouldn’t scratch it. Though during a team bonding session, I have accidentally dropped my glasses on to the road. Some small point scratches, which is quite unfortunate because I got the glasses for less than a month at the time. So the score for durability for the Sync-III HVLL would be 7/10.  

The performance on the PC and devices for the Sync-III I’d say its more superior compared to the Digital lenses. It is capable of a higher additional power due to its Ultra Boost technology which does not involve any type of footwear. Ultra boost is capable of achieving higher addition power past the reading portion of the lenses, so technically the addition can get higher than +1.32 at even power gazes.

Although the FOV is a bit more constricted at distance, it has a wider, more comfortable intermediate portion and a reading portion that is slightly smaller than the Digital. Detailed tasks like reading articles and writing is very comfortable using the Sync-III, heck I’m using the Sync-III while typing this right now. For more dynamic tasks like gaming it doesn’t affect it a lot, I can still play games as I usually did. While it doesn’t accommodate very well to by dual monitor set up, its not really a big problem. So the Sync-III gets a 8.5/10 for use with digital devices.  

Conclusion

Both of the anti fatigue lens are great, but they all have their own pros on cons. In a nutshell, Zeiss Digital lenses would be more suitable for people with a more dynamic lifestyle, one that needs to move around from place to place and constantly check their devices. It also recommended for people would would like a wider FOV at distance. Hoya’s Sync-III would be more suitable for people who are usually behind the desk working in a more stationary environment. The Ultra Boost feature really does help with heavy near work by providing additional power to relax the eyes more.

Both of these lenses have a robust range of additional powers. Zeiss’s would be +0.50, +0.75, +1.00 and +1.25 while Hoya’s would be +0.57, +0.95 and +1.32. It is also recommended to have a pair of frames that are highly adjustable to get the best fitting pair of lenses so that the lenses will be utilised to it full potential. Do drop by any of our branches for a further consultation.

Macular degeneration

Macular Degeneration by Pott Glasses

Macular degeneration

Introduction

Macular degeneration, or as its more commonly known as Age-related macular degeneration(AMD). It is one of the cause of irreversible blindness among people who are in their golden years (Waugh et al, 2018). There are 2 types of AMD which are Dry AMD and Wet AMD. Dry AMD being characterized by the atrophy of certain areas of the retina, in layman terms, certain parts of the nerves in your eyes are dying or have stopped working (Waugh et al, 2018). Wet AMD would be characterized by abnormal new blood vessels growing in the retina, causing swelling mainly in the central part of the retina, causing vision loss (Waugh et al, 2018)  

Macular Degeneration by Pott Glasses

left : normal vision , right : permanent dark spot that blocks the vision for AMD patient

Signs and symptoms

Most patients don’t get any obvious symptoms in the early stages of the diseases. An optometric examination will take place to detect AMDs. In dry AMD patients, they typically report that the central vision is slowly deteriorating. However, the deterioration happens much more rapidly in wet AMD, sometimes in the matter of days (Horton & Guly, 2017). Hence, when checked with the amsler grid, which is a grid with many small squares, the patient will have to focus on a black dot in the middle of the grid and describe what they see. Usually the patient would report that the lines on the amsler grid is not straight or the squares look distorted or blur.  

Treatment

For dry AMD, there’s very limited amount of treatment options. Usually, suggestion for treatment is that to go on a specific vitamin regiment and live a generally healthier lifestyle. Besides, patient will also be asked to quit smoking if they do smoke (Horton & Guly, 2017). For wet AMD, the one and only treatment available so far is the injection of anti-vascular endothelial growth factors (Anti-VEGF).

The administration of these drugs can stop the production of abnormal blood vessels and improve the visual acuity of the patient (Horton & Guly, 2017). The anti-VEGF are administered through an intraocular injection which means that a syringe will be inserted into the eyeball and the drug is administered straight into the eye. There has been a recent study on improving the vision of AMD patients by treatment with a corneal elastic modulus-altering procedure. This procedure basically alters the geography of the corneal to let the light hit the good parts of the retina instead of the bad parts, therefore, improving vision. However. this procedure is still being tested (Serdarevic et al, 2017).  

Prevention

AMD does have a genetic disposition. However, recent studies have found that prolonged exposure to high energy blue light can also damage the retina. Therefore, causing AMD to occur earlier in life (Zhao et al, 2018). To cut down on one preventable cause of AMD, we implore our readers who are digital natives to start using blue filter lenses. This is to protect your eyes, provided that your job does not entail very accurate colour discrimination. This is due to blue filter lenses tend to have a faint yellow tint which may affect colour perception.

References

Horton, S., & Guly, C. (2017). Prevention and treatment of age‐related macular degeneration. Prescriber28(1), 37-41. Serdarevic, O., Tasindi, E., Dekaris, I., & Berry, M. (2017). Vision improvement in dry and wet Age‐Related Macular Degeneration (AMD) patients after treatment with new corneal CPV procedure for light redirections onto the retina. Acta Ophthalmologica95. Waugh, N., Loveman, E., Colquitt, J., Royle, P., Yeong, J. L., Hoad, G., & Lois, N. (2018). Introduction to age-related macular degeneration. In Treatments for dry age-related macular degeneration and Stargardt disease: a systematic review. NIHR Journals Library. Zhao, Z. C., Zhou, Y., Tan, G., & Li, J. (2018). Research progress about the effect and prevention of blue light on eyes. International journal of ophthalmology11(12), 1999.

HOW CAN AN OPTOMETRIST HELP YOU?

HOW CAN AN OPTOMETRIST HELP YOU?

What does an optometrist do?

A question that has been popping up a lot more recently due to the more informed public this age. Well fret not, in this post I’m going to talk about how can an optometrist help you.

Who is an optometrist?

An optometrist is a health care professional that are trained to handle ocular diseases and binocular anomalies on top of what the optician does which is refraction, lens edging and dispensing. We are also trained in specialty lens fittings such as rigid gas permeable (RGP) lenses, Rose-K and Ortho-K lenses.

What do they do?

In short, we are the primary care practitioners who are responsible to detect and solve problems with the eyes with ophthalmic lenses and contact lenses. We will then referr to ophthalmologists on an indication of a disease that may need medical intervention.

What should you look for from an optometrist?

We are trained in many different refraction techniques to deal with different types of eyes. This is to ensure that we get an accurate refraction results every time. In our kit, we have a Retinoscope and an Opthalmoscope.

The retinoscope is a tool that we use to determine the person’s power. Although these days we prefer to use an autorefractor which is the scanner that scans your power before we bring the you into the refraction room due to its speed, but when there is an indication to use it, such as when we notice that the astigmatism is too high, with the scope we can actually determine if the person would have keratoconus. In some more serious cases of cataracts, we can detect using the retinoscope as well.

The opthalmoscope is basically a magnifying glass to look in to the eye to check the retina. Usually the optometrist would turn off the lights and tell you to look at a specific direction. After that we would get close with the opthalmoscope to check the clarity of the ocular media. At this point we are able to determine if a person has cataract or not.

Then, we focus on the retina. The things that we would check for would be the ratio between the blood vessels, hemorrhages, leakages and also the optic nerve head. With that, we can determine if the person’s blood pressure and blood glucose level are at normal level, and the possibility of getting glaucoma. If you’re having pink eye, we would use a slit lamp, which is a microscope, to check the surface of your eye and the inner eye, to determine the cause of the red eye. Note that cause of a red eye could be bacterial infections, viral infections, allergies and foreign objects.

What about the kids?

Kids under the age of 6 are also more than welcome to be screened for lazy eye. Lazy eye could result in permanent loss of visual if it is left unattended. Therefore, it is prudent for us to check for the signs and symptoms before it is too late. We can also manage kids with squint eyes (mata sepet), with specialty prism lenses so that they don’t later develop lazy eyes as well. In some cases, prescribe in office training to help training kids’ eye muscles so that they’re aligned and look normal again. With all the technicalities aside, optometrists can also deduce the condition of your eyes through questions. In our book, there is a word of advice: 70% of the time, the patient would tell you their diagnosis. Its just that the patients are not aware of their conditions, so we are also there to inform and educate.

When should you see one?

Whenever you feel like your vision is not as good as it should be, eyestrains, headaches after long hours of work, persistent itching in the eyes, mucus discharge in the eyes, the list goes on. In a nutshell, optometrists possess the skills and knowledge to help you with more than just your vision but also your health. Book an eye check with optometrist today!