Biofinity Toric Multifocal Fitting Guide: A Comprehensive Plan

Biofinity toric multifocal lenses offer a comprehensive solution for presbyopic astigmats, demanding a meticulous fitting approach for optimal visual performance and patient satisfaction.

This guide details a step-by-step process, leveraging key parameters and diagnostic techniques to achieve successful outcomes with these advanced lenses.

Biofinity Toric Multifocal lenses represent a significant advancement in correcting both astigmatism and presbyopia simultaneously, offering a comfortable and high-quality vision solution. These lenses utilize CooperVision’s Aquaform Technology, ensuring high oxygen transmissibility for healthy, all-day wear.

Designed for individuals requiring both distance and near correction due to age-related loss of accommodation and corneal astigmatism, Biofinity Toric Multifocal lenses provide a seamless visual experience. The unique optic design minimizes compromise, delivering clear vision at all distances. Successful fitting requires a thorough understanding of lens parameters and a systematic approach.

Understanding Presbyopia and Astigmatism

Presbyopia, the age-related loss of near focusing ability, typically begins around age 40, requiring reading glasses or multifocal lenses. Simultaneously, many individuals experience astigmatism, an irregular corneal curvature causing blurred distance and near vision.

Biofinity Toric Multifocal lenses address both conditions concurrently. Astigmatism correction stabilizes the image, while the multifocal design provides clear vision at varying distances. Understanding the interplay between these refractive errors is crucial for accurate lens selection and optimal patient outcomes, ensuring comfortable and sharp vision.

Patient Selection Criteria

Ideal candidates for Biofinity Toric Multifocal lenses are presbyopic patients with astigmatism exhibiting consistent refractive error and healthy ocular surfaces. A stable refraction for at least one year is paramount;

Patients should demonstrate sufficient tear film quality and possess the manual dexterity for lens handling. Those with significant dry eye, allergies, or certain corneal pathologies may not be suitable. Thorough evaluation of patient motivation and expectations is vital for successful adaptation and satisfaction.

Pre-Fitting Assessment

A comprehensive pre-fitting assessment is crucial for Biofinity Toric Multifocal success. Begin with a detailed case history, noting visual demands, lifestyle, and previous contact lens experience.

Perform a thorough refraction, including distance and near vision, accurately determining spherical, cylindrical, and add power requirements. Evaluate binocular vision, assessing accommodative amplitude and phoria at near. Assess corneal health and tear film stability before proceeding to lens selection.

Case History Review

A detailed case history is the foundation of a successful Biofinity Toric Multifocal fitting. Inquire about the patient’s visual needs for various distances – near, intermediate, and far – relating these to their daily activities.

Document any history of ocular surface disease, allergies, or systemic conditions that may impact lens wear. Understand their previous contact lens experience, including successes and failures, and their comfort levels; This information guides initial lens selection and manages expectations.

Refraction and Visual Needs Analysis

Perform a comprehensive refraction, including a thorough cycloplegic refraction if appropriate, to accurately determine the patient’s spherical, cylindrical, and axial correction. Monocular and binocular acuities should be recorded at distance and near.

Analyze the patient’s lifestyle and visual demands to determine the appropriate add power and intermediate correction needs. Understanding their specific tasks – computer use, reading, driving – is crucial for optimizing visual performance with Biofinity Toric Multifocal lenses.

Lens Parameter Overview

Biofinity Toric Multifocal lenses offer a wide range of parameters to accommodate diverse prescriptions. Available base curves span to ensure optimal corneal coverage and comfort. Cylinder power ranges from -0.75D to -5.75D in 0.50D steps, addressing varying degrees of astigmatism.

Axis options are available in 5-degree increments, from 5 to 180 degrees, for precise alignment. Add powers range from +1.00D to +2.50D in 0.50D steps, enabling customized near vision correction.

Available Base Curves

Biofinity Toric Multifocal lenses are currently offered with a selection of base curves designed to fit a broad spectrum of corneal curvatures. These base curves are carefully chosen to optimize lens-to-cornea alignment, enhancing both visual acuity and wearing comfort.

The available options include 8.40mm, 8.50mm, 8.60mm, and 8.70mm. Selecting the appropriate base curve is crucial during the diagnostic fitting process, ensuring proper centration and minimizing potential complications like binding or excessive movement.

Cylinder Power Range

Biofinity Toric Multifocal lenses address a wide range of astigmatic correction needs with a comprehensive cylinder power range. This allows for precise customization to meet individual patient prescriptions, maximizing visual clarity and reducing distortion.

The available cylinder powers span from -0.75D to -5.75D, progressing in 0.50D steps. This granular progression ensures a more accurate fit for patients with varying degrees of astigmatism, contributing to improved comfort and visual performance.

Axis Options

Biofinity Toric Multifocal lenses provide extensive axis options, crucial for accurate astigmatism correction and lens stability. Precise axis alignment is paramount for optimal visual acuity and minimizing unwanted visual aberrations.

These lenses are available in axis increments of 5 degrees, ranging from 5 to 180 degrees. This broad spectrum of axis choices allows for fine-tuning the lens orientation to perfectly match the patient’s corneal astigmatism, ensuring superior vision and comfort.

Add Power Range

Biofinity Toric Multifocal lenses cater to a diverse range of presbyopic corrections with a comprehensive add power selection. This ensures a customized solution for varying near vision needs and comfortable reading distances.

The available add powers span from +1.00D to +2.50D, incrementing in 0.50D steps. This granular progression allows for precise adjustments, optimizing near vision clarity while minimizing accommodative strain. Careful add power selection is vital for binocular balance and overall visual satisfaction.

Diagnostic Fitting Process

Biofinity Toric Multifocal fitting begins with careful initial lens selection, based on refraction and corneal topography. Employ over-refraction techniques to fine-tune power and cylinder, ensuring optimal distance acuity. Assess visual acuity at distance, noting any induced astigmatism or rotational stability issues.

Progress to intermediate and near vision evaluation, utilizing dynamic visual acuity tests and reading addition verification. Monitor blink patterns and lens rotation to confirm proper alignment and patient comfort. This iterative process is crucial for successful adaptation.

Initial Lens Selection

Biofinity Toric Multifocal initial lens selection requires a thorough refraction, including spherical power, cylinder, and axis determination. Utilize the patient’s existing lens parameters as a starting point, considering their add power needs. Choose a base curve aligning with their corneal curvature.

Begin with a diagnostic set encompassing a range of add powers (+1.00D to +2.50D) and cylinder values (-0.75D to -5.75D). Prioritize a lens that closely matches the refraction, anticipating adjustments during over-refraction.

Over-Refraction Techniques

Over-refraction is crucial for refining Biofinity Toric Multifocal lens power. Begin with the diagnostic lens on the eye and refine the spherical power in 0.25D increments, optimizing distance acuity. Next, adjust the cylinder and axis to maximize clarity, monitoring for rotational stability.

Evaluate add power by refining in 0.25D steps, assessing near vision performance. Utilize a dynamic visual acuity chart to simulate real-world activities. Record all changes meticulously, comparing results binocularly to ensure balanced vision.

Assessment of Visual Acuity at Distance

Assess distance visual acuity with the Biofinity Toric Multifocal lens in place, using a standard Snellen chart at 6 meters (20 feet). Record the best-corrected visual acuity for each eye individually, then binocularly. Pay close attention to any complaints of blur, distortion, or glare.

Evaluate the patient’s subjective response, asking about clarity and comfort. Confirm adequate vision and minimal aberrations before proceeding to intermediate and near assessments. Document all findings thoroughly for accurate comparison.

Intermediate Vision Evaluation

Intermediate vision assessment is crucial with Biofinity Toric Multifocal lenses, as this range often presents challenges. Utilize a reading card held at approximately 40-60cm (16-24 inches). Dynamic visual acuity testing, involving moving targets, simulates real-life scenarios like computer use or driving.

Observe for clear vision and comfortable focus at this distance. Note any reports of blurriness or difficulty switching focus. This step helps determine if the add power is appropriately balanced for the patient’s visual needs and lifestyle.

Dynamic Visual Acuity Testing

Dynamic visual acuity testing with Biofinity Toric Multifocal lenses goes beyond static charts, mimicking real-world visual demands. Employ a moving target, such as a video display or a horizontally-moving reading card, at intermediate distances (40-60cm).

Assess the patient’s ability to maintain clear vision during movement. This reveals how well the lens design supports dynamic focusing. Note any fluctuations in acuity or reported blur, indicating potential issues with lens power or stability. This test is vital for active lifestyles.

Reading Addition Verification

Confirm the selected reading addition with Biofinity Toric Multifocal lenses using a standard near vision chart at a comfortable reading distance (typically 40cm).

Monocular testing helps isolate each eye’s performance, while binocular testing assesses overall reading speed and comfort. Compare the patient’s reading acuity with and without the lenses. A successful fit provides clear, comfortable near vision without excessive accommodation or strain. Adjust the add power in 0.25D increments if needed.

Near Vision Assessment

Near vision assessment with Biofinity Toric Multifocal lenses is crucial for evaluating reading performance and patient comfort. Utilize a standardized near vision chart, assessing both monocularly and binocularly.

Evaluate reading speed, clarity, and any reported distortions. Inquire about the reading distance and any perceived strain. Observe the patient’s posture and head position during reading. A comfortable and efficient near vision experience indicates a successful lens fit, minimizing fatigue and maximizing usability.

Binocular Near Vision Performance

Binocular near vision performance is paramount when fitting Biofinity Toric Multifocal lenses. Assess fusion ranges and stereopsis to ensure comfortable and efficient binocular function at near.

Observe for any signs of suppression or diplopia. Evaluate the patient’s ability to maintain single, clear vision during prolonged near tasks. Positive fusional vergence and adequate stereopsis indicate successful binocular adaptation to the multifocal design, enhancing depth perception and reducing eye strain.

Reading Distance and Comfort

Reading distance and comfort are crucial indicators of successful Biofinity Toric Multifocal adaptation. Determine the patient’s preferred reading distance and verify clear vision at that distance.

Inquire about any subjective complaints, such as eye strain, headaches, or blurred vision. Assess the patient’s ability to maintain a comfortable reading posture without excessive head tilt or unnatural positioning. A comfortable reading experience signifies optimal lens power and design for their visual needs.

Toric Lens Orientation and Stability

Toric lens orientation and stability are paramount for clear vision with Biofinity Toric Multifocal lenses. Assess lens rotation post-blink; excessive movement can induce astigmatism and blur vision.

Blink analysis helps evaluate how consistently the lens returns to its intended position. Proper orientation ensures the cylinder correction aligns with the patient’s astigmatism axis. Stability minimizes fluctuations in visual acuity and maximizes patient comfort throughout the day.

Blink Analysis

Blink analysis is a crucial component of a Biofinity Toric Multifocal fitting, evaluating lens movement and return to position with each blink. Observe several blinks to determine consistency.

Look for excessive rotation or slippage, which can compromise visual acuity. A stable lens should maintain its orientation within a few degrees. Document any observed movement patterns, as this informs lens selection and potential adjustments to optimize both distance and near vision performance for the patient.

Rotation Assessment

Rotation assessment is vital when fitting Biofinity Toric Multifocal lenses, as misalignment significantly impacts vision. Utilize a keratometer or corneal topography to precisely measure the lens axis after several blinks.

Compare the fitted axis to the refraction and note any discrepancies. Excessive rotation—more than 10 degrees—may necessitate a different lens design or power. Consistent rotation indicates a need for adjustments to ensure optimal visual correction and patient comfort, maximizing the benefits of the multifocal design.

Addressing Common Fitting Challenges

Fitting Biofinity Toric Multifocal lenses can present challenges. Induced astigmatism correction is crucial; slight adjustments to lens power or axis can minimize blur. Minimizing rotation often requires careful consideration of blink dynamics and lens fit.

If rotation persists, explore alternative base curves or cylinder powers. Patient education regarding lens handling is also key. Addressing these issues proactively ensures optimal visual acuity and patient satisfaction with these specialized lenses.

Induced Astigmatism Correction

Induced astigmatism during Biofinity Toric Multifocal fitting can stem from lens flexure or improper fit. Careful over-refraction is essential to identify and quantify any induced cylinder. Small adjustments – 0.25D to 0.50D – in cylinder power or axis can often effectively correct this.

Evaluate the lens position and stability during dynamic viewing. Confirm that the lens remains aligned with the patient’s visual axis. Precise correction enhances visual clarity and minimizes distortion, optimizing the overall fitting outcome.

Minimizing Rotation

Minimizing rotation is crucial for Biofinity Toric Multifocal lens success. Assess blink dynamics; incomplete blinks can contribute to lens movement. Ensure proper lid tightness and consider a lens with enhanced stability features if needed.

Evaluate the fit in all gazes – primary and secondary. A well-centered lens is less prone to rotation. If rotation persists, slight adjustments to the axis or base curve may be necessary to optimize lens stability and visual acuity.

Troubleshooting Poor Vision

Troubleshooting poor vision with Biofinity Toric Multifocal lenses requires a systematic approach. Distance vision issues may indicate incorrect sphere or cylinder power, or lens rotation. Near vision complaints could stem from inadequate add power or improper reading distance.

Carefully repeat refraction and over-refraction. Verify lens centration and rotation. Consider patient feedback regarding comfort and visual clarity. Small adjustments to parameters can often resolve these issues, optimizing visual performance.

Distance Vision Issues

Distance vision issues with Biofinity Toric Multifocal lenses often relate to refractive error or lens alignment. Begin by confirming the spectacle refraction and repeating over-refraction with the trial lenses. Assess for lens rotation; even slight movement can blur distance acuity.

Evaluate cylinder power and axis accuracy; Consider a spherical power adjustment if necessary. Ensure adequate pupillary diameter for optimal lens performance. Thoroughly investigate these factors to pinpoint the cause and refine the fit.

Near Vision Complaints

Near vision complaints with Biofinity Toric Multifocal lenses frequently stem from insufficient add power or improper reading addition placement. Verify the reading addition is accurately centered and provides comfortable, clear vision at the patient’s preferred reading distance.

Consider increasing the add power in 0.25D increments if blur persists. Assess binocularity during near tasks; imbalances can exacerbate complaints. Rule out accommodative dysfunction. A careful evaluation will help optimize near vision performance.

Lens Care and Patient Education

Lens care and thorough patient education are crucial for Biofinity Toric Multifocal success. Emphasize proper cleaning with multipurpose solutions, avoiding tap water and harsh soaps. Demonstrate correct handling and insertion techniques to prevent damage and ensure comfort.

Instruct patients on daily removal, cleaning, and storage. Highlight the importance of regular case replacement. Reinforce adherence to recommended replacement schedules. Proper hygiene minimizes complications and maximizes lens performance, contributing to long-term satisfaction.

Cleaning and Disinfection Protocols

Biofinity Toric Multifocal lenses require diligent cleaning and disinfection. Patients should wash hands thoroughly before handling. Daily removal and cleaning with a recommended multipurpose solution are essential. Rubbing the lens surface gently removes deposits, followed by rinsing with the solution.

Never use tap water or saline solution alone for cleaning. Proper storage in a clean lens case filled with fresh solution overnight is vital. Cases should be replaced regularly to prevent microbial contamination, ensuring optimal lens hygiene and comfort.

Handling and Insertion Techniques

Biofinity Toric Multifocal lenses demand careful handling. Patients should inspect the lens for damage before each insertion. Proper technique involves holding the lens on the fingertip and gently placing it on the eye, avoiding nail contact.

Ensure the lens centers correctly, utilizing blink-assisted settling. Consistent insertion technique minimizes discomfort and maintains lens stability. Patients should be instructed to avoid excessive pressure and seek assistance if difficulties arise, promoting successful adaptation and wear.

Follow-Up Visits and Refinement

Follow-up visits are crucial for Biofinity Toric Multifocal success. The first visit, 1-2 weeks post-fitting, assesses lens adaptation, visual acuity, and comfort. Refraction over the lens confirms correction accuracy.

Subsequent adjustments may involve parameter changes – base curve, cylinder, or add power – based on patient feedback. Monitor lens rotation and stability. Address any reported issues promptly. Thorough evaluation and iterative refinement optimize vision and ensure long-term patient satisfaction with these specialized lenses.

First Follow-Up (1-2 Weeks)

The initial follow-up, scheduled one to two weeks after dispensing Biofinity Toric Multifocal lenses, is paramount. Assess patient adaptation, focusing on comfort and clarity at all distances. Perform a comprehensive refraction over the lenses to verify the prescription’s accuracy.

Evaluate binocular vision and address any reported difficulties. Check lens fit, rotation, and overall health of the cornea and conjunctiva. Patient feedback guides further refinement, ensuring optimal visual performance and satisfaction.

Subsequent Adjustments

Subsequent adjustments to the Biofinity Toric Multifocal fitting are often necessary to fine-tune vision. Consider modifying add power in 0.25D increments based on near vision complaints or dynamic acuity testing results. Small cylinder adjustments can correct residual astigmatism or minimize rotation.

If discomfort persists, explore alternative base curves or lens designs. Thoroughly document all changes and patient responses. Remember, achieving optimal vision often requires iterative refinement and a collaborative approach with the patient.

Biofinity Toric Multifocal Lens Materials

Biofinity Toric Multifocal lenses are crafted from Comfilcon A, a silicone hydrogel material known for its high oxygen transmissibility. This ensures corneal health, even with extended wear. The material’s natural wettability promotes comfort and minimizes dryness, crucial for multifocal lens adaptation.

Comfilcon A also exhibits excellent flexibility, aiding in lens handling and fitting stability. Its inherent resistance to deposit build-up contributes to long-term lens performance and reduces the need for frequent cleaning.

Comparison with Other Multifocal Toric Lenses

Compared to other multifocal toric lenses, Biofinity Toric Multifocal often stands out due to its Comfilcon A material, prioritizing oxygen permeability for healthier wear. Some competitors utilize different silicone hydrogel formulations or hydrogel materials, impacting breathability and comfort.

Biofinity’s balanced approach to near and distance add powers, alongside a wide parameter range, offers fitting flexibility. Other lenses may have limited add power options or cylinder corrections, potentially compromising visual acuity for certain prescriptions.

Contraindications for Biofinity Toric Multifocal Lenses

Biofinity Toric Multifocal lenses aren’t suitable for all patients. Individuals with significant ocular surface disease, severe dry eye, or uncontrolled allergies may experience discomfort and reduced lens performance. Pre-existing corneal irregularities, such as keratoconus, are also contraindications.

Patients with certain systemic conditions, like uncontrolled diabetes, or those taking medications causing dry eye, require careful evaluation. A history of recurrent eye infections or sensitivity to lens materials warrants caution; alternative options should be considered.

Ordering Information and Availability

Biofinity Toric Multifocal lenses are readily available through authorized CooperVision distributors and eye care practices. Ordering requires a valid contact lens prescription specifying base curve, cylinder, axis, and add power. Practitioners can utilize CooperVision’s online ordering portal, ProSite, for streamlined processing.

Lens parameters are stocked in a wide range to accommodate diverse prescriptions. Availability may vary based on specific parameters and geographic location. Contact your local distributor for current inventory and lead times. Ensure accurate prescription details to avoid ordering errors.

Resources for Eye Care Professionals

CooperVision provides extensive resources to support practitioners fitting Biofinity Toric Multifocal lenses. The ProSite portal (link placeholder) offers detailed product information, fitting guides, and educational materials. Access webinars and online training modules focused on multifocal lens fitting techniques.

Dedicated customer support is available to assist with ordering, troubleshooting, and patient management. Utilize the CooperVision website for access to clinical studies and peer-reviewed publications. Downloadable resources, including patient education brochures, enhance communication and compliance.