Frequently Asked Questions

QuickSee provides the same accuracy as a desktop autorefractor. Desktop autorefractors measurement range is -25 to +25 diopters; QuickSee device covers -10 to +10 diopters, which addresses the needs of over 95 % of adult population. QuickSee is within < 0.25 D (excellent agreement) and < 0.5 D (good agreement) of subjective refraction for 60-70% and 80-90% of adult patients, respectively, whereas desktop autorefractors are usually within <0.25 D and < 0.5 D of subjective for 50-60% and 80-90% of these patients, respectively.

References to support that the -10 to 10 range covers > 95% of the adult population:

• Dandona R, Dandona L, Naduvilath TJ, Srinivas M, McCarty CA, Rao GN. Refractive errors in an urban population in Southern India: the Andhra Pradesh Eye Disease Study. Invest Ophthalmol Vis Sci 1999;40:2810Y8.
• Vitale S, Ellwein L, Cotch MF, Ferris FL 3rd, Sperduto R. Prevalence of refractive error in the United States, 1999-2004. Arch Ophthalmol 2008; 126:1111Y9.
• Katie M. Willians et al. Prevalence of refractive error in Europe: the European Eye Epidemiology (E3) Consortium. Eur J Epidemiol. 2015; 30(4): 305–315.

Wavefront aberrometry provides refractive measurements by assessing both lower- and higher-order aberrations. It captures additional refractive information that is unavailable to traditional autorefractors. This additional information provides an enhanced view of what refractive correction is needed, whether it comes in the form of eye surgery or eyeglass prescriptions.

Wavefront aberrometry enables more measurements of the eye’s refractive errors to be taken, and with higher precision than traditional autorefractor technology, thereby resulting in a more accurate autorefraction measurements.Wavefront aberrometry technology currently used in conjunction with LASIK costs more than $40,000 USD. PlenOptika’s innovative, patented engineering and design makes wavefront aberrometry accessible for general optometric practice in clinics, retail stores, and even mobile care.

QuickSee is suitable for all kinds of patients from age five years and up. QuickSee allows the clinician to operate the device in binocular and/or monocular mode at the click of a button. Certain conditions (such as facial asymmetry or eye conditions like cataract) can make binocular measurement difficult, in which cases monocular measurement is recommended. For binocular measurements, aligning QuickSee device can be difficult in patients with strabismus, amblyopia, phoria, or drooping eyelids. In these cases, we suggest taking monocular measurements.

The binocular open view allows the patient to view a distant target, thereby reducing accommodation.

Not at this time. We recommend using a device specifically designed to measure K-values.

Yes, QuickSee allows you quickly and easily check if your patients refractive error has changed from their contact lens prescription. Vision care providers can check if their patients have their right power for their eye without having them take their contact lenses off.

Yes. Contact lenses that are the correct prescription will neutralize the patient’s refractive errors, and that neutralization will be detected in QuickSee’s measurements. Vision care providers can check if their patients have their right power for their eye without having them take their contact lenses off.

QuickSee could over-minus a prescription if the patient is over-accommodating or over-focusing. This tends to happen with younger patients. Those over 40, and especially those over 80, don’t accommodate much anymore. Some optometrists have found that QuickSee actually may under-minus patients. To assist a patient who is over-accommodating, encourage the patient to blink during the measurement and to fixate on and describe a distant target. When the measurement is taken again, the prescription reading will be more accurate.

Whether the patient has myopia, hyperopia, or astigmatism, QuickSee provides accurate measurements within its measurement range. For astigmatism, the measurement range is 0 to -6 D of cylinder.

Of course. Amblyopia is a subjective measurement of what the patient sees, and QuickSee is an objective device. If a patient, for example, is plano in the left eye, meaning they have perfect vision, and a plus-five in the right eye, that patient will in all likelihood be amblyopic. The brain’s going to suppress the imagery from that weaker eye: the plus five in the right eye. If you were to use QuickSee that produced a dead-on accurate reading on that patient, QuickSee would show that the left eye is plano and that the right eye is plus-five. You would still receive the objective measurement, but QuickSee will not tell you that the patient has amblyopia. Patients with amblyopia should be measured in monocular mode.

QuickSee measures high order aberrations, but at this time does not display them. We are still collecting clinical data before we release this feature.

QuickSee can take measurements in patients with strabismus but it may be more challenging. QuickSee can be used in binocular or monocular mode. With strabismic patients, however, you will almost always need to test in monocular mode. By definition, depending on the severity of the strabismus, one of the eyes is going to be misaligned. The misaligned eye will not be looking straight ahead, and as a result, you may not be able to get a measurement on that eye.

Patients with high refractive errors typically benefit from having subjective refraction given that autorefractor errors are quite high for this patient population. Quicksee, as a wavefront autorefractor also suffers from higher errors in this population, in line with even the best autorefractors in the market.

We don’t have an answer at this time as we have do not have any clinical data yet.

If the cataract is small, QuickSee should be able to measure the refractive errors accurately. If the cataract blocks much of the signal (see the spot diagram in monocular mode) then it is likely QuickSee will not be able to measure the refractive efforts.

The minimal pupil size is 2 mm. QuickSee does not require dilation but works accurately for dilated eyes.

QuickSee device can be difficult in patients with strabismus, amblyopia, phoria, or drooping eyelids. In these cases, we suggest taking monocular measurements.

QuickSee’s binocular design ensures that both eyes are “seeing” the same visual field so that both eyes receive the same levels of light and are able to focus on the same target during the measurement, resulting in both pupils behaving similarly. The open view design enables the patient to relax their accommodation by looking through the device (similar to a pair of binoculars) at a distant target instead of at a virtual image that is used in a traditional closed view system (which can cause accommodation or device induced myopia). Overall, QuickSee’s binocular open view design is similar to clinical standard of binocular distance vision testing, and makes the measurement more accurate.

In addition, an incidental benefit of the binocular mode is higher throughput as both eyes are being measured at the same time

In comparison, devices that measure one eye at a time typically suffer from low accuracy because each eye experiences different vision conditions that can induce accommodation or pupil size changes. Since QuickSee has a binocular open view design that ensures the same visual experience for both eyes in either binocular or monocular measurement mode, thus avoiding the challenges faced by other devices.