Comparision Case Study: Lotrafilcon B Multifocal vs. SpecialEyes Multifocal

Picture this: You are assessing a patient in a pair of in-office soft multifocal contact lenses and have done your due diligence by performing a careful refraction, setting realistic expectations, and evaluating lens performance. On paper, the exam and visual acuity results are promising, but the patient still isn’t satisfied with the quality of vision. Frustrating, right?

The case below highlights the importance of a patient’s subjective response and how a custom soft multifocal may be the solution.

Case Report
During a clinical trial, a 58-year-old female was assessed with two different soft multifocal contact lens designs: one in office lotrafilcon B lens design and one fully soft custom multifocal lens design from SpecialEyes.
The goal of this case study was to compare the two designs based on both the objective visual acuity results AND the patient’s subjective response at distance, near, and intermediate ranges. The initial exam findings were as follows:

Keratometry Readings:
OD: 7.95/7.80
OS: 7.90/7.80

HVID:
OU: 12.72mm

Spectacle Refraction:
OD: -4.25 -1.00 x075
OS: -4.00 -1.25 x0105
OU: +2.25 Add

Pupil Size:
OU: 4.51mm

The patient was first provided with a set of in office lotrafilcon B multifocal contact lenses. Using the manufacturer’s fitting guide, the practitioner dispensed lenses with the following parameters:

OD: 8.6 BC / 14.2 diam. -4.75 sph (high add)
OS: 8.6 BC / 14.2 diam. -4.50 sph (high add)

After three hours of wear, the practitioner recorded the patient’s objective and subjective visual acuity results with the lotrafilcon B lenses. The patient was then provided with a pair of SpecialEyes 54 Multifocal lenses. Using measurements from the Volk Eye Check and following the manufacturer’s fitting guide, the practitioner designed a pair of fully custom soft multifocal contact lenses with the following parameters:

OD: 8.4 BC/ 15.4 diam. -4.00 -1.00 x075 (+2.25 add)
2.0mm near center zone & 4.0mm peripheral zone

OS: 8.4 BC/ 15.3 diam. -3.75 -1.00 x105 (+2.25 add)
2.0mm near center zone & 4.0mm peripheral zone

Once again, the practitioner documented the patient’s visual acuity results after three hours of lens wear.

Results
The following charts display the patient’s objective and subjective visual acuity results for each set of lenses:

After wearing each set of lenses for three hours, the patient’s subjective visual responses were equal at distance and better at both near and intermediate with the SpecialEyes 54 Multifocal. Furthermore, when comparing both objective and subjective data, we found the SpecialEyes Multifocal provided the patient with a better balance of vision at all ranges. Finally, when asked to rate likeliness to buy on a scale of 1 to 10, the patient reported a higher likeliness to buy the SpecialEyes lenses—with a rating of 10/10! We believe this outcome can be attributed to the following custom lens advantages:

• Ability to correct the patient’s small amounts of astigmatism
• Custom multifocal optic zones optimized based on pupil size for an even distribution of power

In conclusion, if you find yourself struggling to provide your presbyopic contact lens wearers with the quality and balanced vision they desire, consider prescribing the SpecialEyes 54 Multifocal. To learn more, click the button below to access detailed product information, fitting strategies, and tools to help you get started.