Polarised vs High Index Lenses: Which Upgrade Is Worth It?
By Valley Eyewear / ANZ | Published: 2026-10-15
Category: Comparisons
Compare polarised and high index lenses on glare, UV, thickness and blue light. See which upgrade matches your prescription and daily light conditions.
Quick answer
Choose polarised lenses if you spend a lot of time outdoors and want the strongest glare control in a tinted lens. Choose high index lenses if your prescription is SPH +/- 4.00 or greater and you want thinner, lighter clear lenses with blue light filtering. If both problems apply to you, the honest answer is two pairs: one polarised, one high index clear.
What each upgrade actually does
Polarised lenses and high index lenses solve different problems, which is why the comparison is not really a contest. Polarisation targets glare: it filters the reflected light that bounces off water, roads and car bonnets. High index targets thickness: a higher refractive index bends light more efficiently, so a strong prescription needs less material to do the same job.
The two can overlap in a single pair, but the price stacks. Before you combine them, check whether your main complaint is glare, lens bulk or screen-related eye strain. That answer decides the upgrade.
How to judge thickness and glare in the real world
For thickness, look at your current glasses from the side. If the lens edge is visibly thick or the frame feels front-heavy, high index is the upgrade that changes your daily experience. The SPH +/- 4.00 threshold is the practical guide: below it, the weight and thickness saving is usually small.
For glare, think about your commute and weekends. If low sun on a wet road or reflections off water make you squint, polarisation is the upgrade you will notice immediately. If your outdoor time is mostly shaded or overcast, polarisation delivers less benefit for the money.
- Strong prescription with thick edges: high index first.
- Outdoor glare, driving or water: polarised first.
- Long screen days plus a strong prescription: high index with blue light filtering.
- Both glare and thickness bother you: budget for two pairs rather than one compromise pair.
Checking the frame before you commit
Lens choice only works if the frame suits your face and your prescription. A larger or upsized frame needs more lens material, so a strong prescription in a big frame will look thicker than the same prescription in a smaller one. If you are choosing a new frame at the same time as your lens upgrade, try the frame on first and check how the lens edge will sit.
For sunglasses, wrap and coverage matter more than badge details. A classic silhouette with good coverage gives polarisation more surface area to work with, while a smaller frame keeps high index lenses looking thinner.
The trade-offs, side by side
- Glare control: Polarised lenses cut reflected glare from water, roads and glass. High index clear lenses do not polarise, so they will not solve low-sun glare on a wet road. If glare is your main complaint, high index alone will disappoint you.
- Lens thickness and weight: High index reduces thickness and weight for SPH +/- 4.00 or greater. Polarised lenses can be made in different materials, but the supplied polarised progressive option is a tinted sunglass lens, not a thinning solution. If your lens edges look thick, high index is the upgrade that changes that.
- Indoor versus outdoor use: High index clear lenses are made for everyday and screen use. Polarised progressive lenses are tinted for sun, so they are not an indoor lens. Match the lens to where you spend most of your waking hours, not to the bigger price tag.
- Cost stacking: Combining polarisation, progressives and high index in one pair pushes the price up quickly. Two purpose-built pairs can be the better value if you genuinely need both glare control and thin lenses. Decide which single problem bothers you most before adding features.
Two upgrades in the range
- High Index Clear Prescription Blue Blocker Lenses: High index clear prescription lenses with blue light blocking, 100% UV protection, scratch resistance and anti-reflective coating, recommended for SPH +/- 4.00 or greater. This is the pick when thickness and screen-related eye strain are the problem, and the SPH threshold tells you whether the upgrade is likely to be visible.
- Polarised Progressive Prescription Sunglass Lenses: Polarised progressive prescription sunglass lenses with high sun glare protection, 100% UVA and UVB protection, scratch resistance and anti-reflective coating. This is the pick when glare outdoors is the main issue, and the progressive option means you do not have to give up reading vision to get polarisation.
- Prisoner II: Prisoner II is an upsized version of a popular frame, a classic silhouette for men and women, with OBE hinges as standard. An upsized frame needs more lens material, so it pairs more comfortably with high index lenses than a basic lens in a strong prescription.
- DB Zero: DB Zero is sized off the original DB frame, hand-crafted from premium Japanese acetate with black badges and zero base lenses. A smaller, flatter profile keeps lens edges less visible, which suits high index lenses and everyday wear rather than maximum sun coverage.
Which upgrade fits you
Best for
- Strong prescriptions (SPH +/- 4.00 or greater) wanting thinner, lighter clear lenses
- People with long screen days who notice eye strain and want blue light filtering
- Outdoor users who need glare control and wear progressives, choosing the polarised sunglass lens
- Anyone buying a second pair for sun rather than replacing their everyday glasses
Not for
- Mild prescriptions where thickness is not a visible problem, as the high index gain is small
- Indoor-only wearers who need a tinted lens, since polarised sunglass lenses are for sun
- People who want one pair to fix both glare and thickness on a tight budget
