Technology Archives - Eye Surgery Today

Can You Mix Lens Brands Between Your Two Eyes?

Blake K. Williamson MD — Wed, 30 Sep 2026 17:24:44 +0000

Mixing IOL (intraocular lens) brands between your two eyes is a surgeon-planned strategy where each eye receives a different lens to optimize overall binocular vision. The practice is generally considered safe when lenses are selected based on complementary optical properties and individual eye anatomy. This guide covers the medical safety of mixed-brand implantation, why surgeons […]

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TECNIS Eyhance Explained: How an Enhanced Monofocal Lens Works

Blake K. Williamson MD — Wed, 30 Sep 2026 17:10:36 +0000

The TECNIS Eyhance is an enhanced monofocal intraocular lens (IOL) manufactured by Johnson & Johnson Vision that uses a continuous refractive power gradient to extend depth of focus beyond what a standard monofocal provides. This guide covers lens design and optical technology, patient candidacy, expected vision outcomes, comparisons with multifocal and EDOF alternatives, potential limitations, […]

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What Is the enVista Toric IOL and How Does It Correct Astigmatism During Cataract Surgery?

Blake K. Williamson MD — Wed, 30 Sep 2026 16:55:03 +0000

The enVista Toric IOL is an FDA-approved, one-piece hydrophobic acrylic intraocular lens that corrects regular corneal astigmatism at the time of cataract surgery, replacing the eye’s clouded natural lens with a toric implant containing built-in cylinder power. This guide covers astigmatism and its impact on cataract outcomes, the enVista Toric’s design and surgical mechanism, patient […]

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Do TECNIS and enVista Handle Color Vision and Contrast Sensitivity Differently?

Blake K. Williamson MD — Wed, 30 Sep 2026 16:40:23 +0000

TECNIS and enVista are UV-filtering monofocal intraocular lenses (IOLs) that produce clinically similar color vision and contrast sensitivity outcomes in head-to-head testing, with meaningful differences emerging primarily in aspheric design philosophy and lens material properties. This guide covers optical and material differences between the two lenses, contrast sensitivity performance across lighting conditions, color vision and […]

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enVista Aspire Explained: How This EDOF Lens Extends Depth of Focus

Blake K. Williamson MD — Wed, 30 Sep 2026 16:13:45 +0000

The enVista Aspire is a monofocal plus intraocular lens from Bausch + Lomb that uses a modified posterior aspheric surface to provide a continuous depth of focus from distance to intermediate vision during cataract surgery. It received FDA approval in August 2023 and is classified as an enhanced monofocal rather than a full EDOF lens. […]

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RxSight UV-Protective Glasses: Why You Need Them, How Long, and What Happens If You Slip Up

Neda Shamie MD — Wed, 26 Aug 2026 12:50:06 +0000

RxSight UV-protective glasses are specially designed eyewear that blocks ultraviolet light from reaching the Light Adjustable Lens (LAL) after cataract surgery, preventing unintended changes to the implant before it is permanently locked in. Because the LAL remains photosensitive until the final lock-in treatment, uncontrolled UV exposure can permanently distort the lens and may cause blurred […]

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Why Are Light Adjustable Lenses After LASIK, PRK, or RK Such an Important Option for Post-Refractive Eyes?

Neda Nikpoor MD — Sat, 22 Aug 2026 12:36:45 +0000

A light adjustable lens (LAL) is a photoreactive silicone intraocular lens whose power can be modified after cataract surgery using targeted UV light, then permanently stabilized through a lock-in treatment. For eyes with prior LASIK, PRK, or RK, this postoperative adjustability addresses a core problem: altered corneal geometry makes standard IOL power calculations inherently less […]

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LAL vs LAL+: What Is the Light Adjustable Lens Plus and How Does It Differ?

Neda Nikpoor MD — Thu, 27 Aug 2026 15:53:43 +0000

The Light Adjustable Lens (LAL) is a photoreactive intraocular lens implanted during cataract surgery whose refractive power can be fine-tuned after the eye heals using targeted UV light from a Light Delivery Device. The LAL+ is a newer model, approved by the FDA in March 2023 as a design modification of the original, featuring a […]

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Pros and cons of the Light Adjustable Lens (surgeon-balanced)

Neda Nikpoor MD — Tue, 25 Aug 2026 11:32:26 +0000

The Light Adjustable Lens is a photosensitive silicone intraocular lens (IOL) that can be adjusted after cataract surgery using calibrated UV light treatments, allowing surgeons to fine-tune prescription power once the eye has fully healed. This guide covers how the lens works compared to standard IOLs, its potential benefits and limitations, candidacy factors, the full […]

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PanOptix vs Vivity: Which Premium IOL Is Right for You?

Neda Nikpoor MD — Fri, 21 Aug 2026 10:14:25 +0000

A premium intraocular lens (IOL) is an artificial lens implanted during cataract surgery that is designed to provide functional vision at more than one distance, unlike a standard monofocal IOL that targets a single focal point. This guide covers how each lens technology works, how they compare across key visual outcomes and side effects, who […]

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