Over the years, toric contact lenses have evolved in ways that have fundamentally improved both the clinician and patient experience. Fitting toric lenses used to feel more labor-intensive and required multiple trial lenses and follow-up visits.
But with the advanced lens designs available today, the fitting process has become far more predictable and efficient.
A brief history of toric contact lenses
Early soft toric designs used a range of stabilization approaches, including prism-ballast and thin-zone designs, both of which relied on thickness differentials to maintain lens orientation on the eye.
While the underlying principle of stabilization via controlled thickness variation has remained constant, modern manufacturing has evolved from predominantly lathe-cut production to soft molding technologies, enabling greater regularity and reproducibility of these design features at scale.1
Astigmatism is highly prevalent among contact lens candidates, with research showing that approximately half of patients have 0.75D or greater of refractive astigmatism in at least one eye.2 Yet, despite this high prevalence, toric lenses have historically been prescribed at rates lower than expected based on patient need.3
Rethinking toric "challenges"
Despite the advances in technology, toric lenses are still sometimes perceived as "difficult." From my perspective, this stems less from the lenses themselves and more from the hesitation to invest time in the initial fitting process.
Research examining contact lens prescribing behaviors supports this perception gap, suggesting that concerns regarding fitting complexities or perceived inefficiencies contribute to lower prescribing rates.3 However, many of these concerns are shaped by earlier generations of lenses and may not accurately reflect current lens technologies.
My fitting philosophy is simple: elevate every contact lens fit. Whether I am addressing a patient's presbyopia, digital eye strain, or astigmatism, I aim to offer the best solutions possible. As eyecare providers, it is our job to embrace contact lens innovations. Otherwise, our patients may not be getting the vision outcomes they deserve.
Design details that streamline fitting
One of the more striking differences between older toric and modern options lies in the evolution of stabilization technology. These advances matter because even small amounts of lens rotation can affect visual quality—particularly in patients with higher levels of astigmatism.
Clinically, this has a profound effect on first-fit success rates. When a lens lands quickly and maintains its axis, patient satisfaction rises almost immediately. It's rewarding to see a patient place a lens on their eye and experience sharp vision instantly without needing to trial multiple lenses. This kind of consistency builds patient confidence in the provider.
From a practical standpoint, more efficient toric fittings rely on two main factors: availability and predictability. While toric fitting has historically been associated with limited parameter availability, that is no longer the case for most patients.
A multi-site clinic analysis found that more than half of astigmatic eyes have less than 1.00D of astigmatism, and that currently available frequent-replacement soft toric lens parameters provide coverage for up to 96.4% of patients with astigmatism—meaning the vast majority can be fit using readily available stock parameters.4
Factors impacting the final lens position
However, final lens position is multifactorial and is influenced less by material category alone and more by factors such as lens modulus, lid interaction, and gravitational forces.
In particular, the dynamic movement of the eyelids—especially the inferior lid's horizontal (nasal-temporal) motion during blinking and the superior lid's vertical action—plays a key role in stabilizing toric lens orientation. Higher-modulus materials may also influence how the lens interacts with these forces and ultimately settles on the eye.
In my practice, I find myself gravitating toward Biofinity toric and MyDay toric lenses because their combination of stability, material technology, and parameter availability supports first-fit success. Because these platforms share the same toric design principles, they support smoother transitions between wearer modalities.
This is especially valuable when patients move from monthly replacement lenses to daily disposable options, allowing clinicians to align lens choice with lifestyle preferences while maintaining fitting consistency.
Simultaneously, whenever there is a change in lens material, design, or modality, the final on-eye fit should be reassessed, as even small differences in material properties can influence lens movement, settling behavior, and overall performance.
Prism-ballasted vs. blink-stabilized designs
A key optical consideration in soft toric lenses is that prism- and peri-ballasted designs incorporate vertical prism within the optic zone as part of their stabilization mechanism. In monocular astigmatic corrections, this will produce vertical prismatic imbalance between the eyes that exceeds the ANSI spectacle standard for vertical prism.
By comparison, blink-stabilized toric lens designs utilize a prism-free optic zone, relying on eyelid interaction and blink dynamics rather than prism to maintain lens orientation.
This distinction eliminates the intentional vertical prism associated with prism- and peri-ballasted designs while providing an alternative approach to stabilization. The optical implications of these design differences have been described in the toric lens design literature.5
The patient perspective
Reliable vision is more than a technical achievement. It is about understanding each patient's lifestyle and visual demands. I prioritize knowing how my patients use their eyes in daily life, and what activities matter most to them, whether they're avid readers, work frequently on digital devices, or engage in sports. Their contact lenses must perform in these real-world conditions.
Material and surface technologies are also key contributors to success. While adequate oxygen transmissibility (Dk/t) remains important for maintaining corneal physiology, especially in extended wear, patient experience is more often driven by surface properties, wettability, and material modulus. Comfort and visual acuity are typically the first outcomes patients notice.5
Studies evaluating silicone hydrogel materials show that high oxygen transmissibility helps maintain corneal physiology by reducing hypoxic stress, particularly in overnight wear where oxygen limitation is most pronounced.6 In daily wear, however, modern soft lenses already provide sufficient oxygen for most patients, and differences between materials are generally small, with only minimal clinical variations such as limbal redness reported in comparative studies.7
Moreover, surface and moisture-retention technologies have increasingly focused on supporting stable tear film interactions, which has been associated with improved comfort and reduced symptoms, like end-of-day dryness and fluctuating vision.7
3 clinical pearls for success
Between improved stabilization designs, advanced materials, expanded parameter availability, and daily disposable options, we now have the tools to provide excellent vision with minimal hassle.
My final three pearls for toric success are:
- Expectation management: Under promise and over deliver when fitting any lens modality. This builds trust and patient satisfaction.
- Be intentional with lens selection: Apply vertex correction where appropriate when converting higher spectacle prescriptions to contact lens powers, and use manufacturer fitting guides and tools to support initial lens selection.
- Invest in the initial fit: Taking the time to get the lens right from the start pays off. Once a patient is successfully fit, adjustments are minimal, creating what I call "annual trust" and long-term loyalty.
