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RETeval Device Reference Data

The RETeval® device includes built-in, age-adjusted reference data for human use. Physicians now have valuable input to aid in their interpretation and assessment of patient test results.

The reference intervals come from an ongoing clinical trial, the RETeval  All Comers Trial (REACT), sponsored by LKC Technologies (More on ClinicalTrials.gov). The study was conducted in five locations in three states utilizing an IRB approved protocol. All subjects completed informed consent forms.

Firmware version 2.8.0 and higher on the RETeval device includes reference intervals for most photopic tests, please refer to the user manual more details. Contact customer support for download information.

Note that the manual states that LKC Sensor Strip skin electrodes must be used to show the reference intervals, and electrode type “Sensor Strip” must be selected at the start of the test.

At a glance, the study included:

  • 522 subjects
  • Age range 2-93
  • 244 subjects (aged 4- 85) have been classified as having normal vision, based on the following criteria:
    • BCVA of 20/25 (0.1 logMAR) or better
    • optic nerve cupping < 50%
    • no glaucoma or retinal diseases
    • no prior intraocular surgery (excepting non-complicated cataract or refractive surgery performed more than one year before)
    • IOP ≤ 20 mmHg
    • no diabetes, and no diabetic retinopathy as determined by the ophthalmologist or optometrist
  • Dilated and undilated normal subjects
    • Some subjects (n=77) were tested after artificial dilation, while others were tested with natural pupils and constant Troland stimuli that compensate for pupil size (n=167). Dilated subjects who did not dilate to at least 6 mm were excluded.
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© 2025 LKC Technologies, Inc.

California Proposition 65 information

Prop-65Warning: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Substance Tables:

The table below lists substances which may be contained within LKC’s RETeval and RETevet products. Substances listed as Type 1 are within permissible levels in one or more of LKC’s products. Substances listed as Type 2 are used in the production of some components used in LKC products and may be present at trace levels, but are typically destroyed during processing. 

RETeval and RETevet Devices

Substance CAS # Type Listed as causing:
Nickel 7440-02-0 1 Cancer
Acrylonitrile 107-13-1 2
Ethylbenzine 100-41-4 2
Crystaline Silica 14808-60-7 1
Lead 7439-92-1 1 Cancer Developmental Toxicity Male Reproductive Toxicity Female Reproductive Toxicity
Methylene Chloride 75-09-2 2 Cancer Female Reproductive Toxicity
Bisphenol A 80-05-7 2
N-Hexane  110-54-3 2 Male Reproductive Toxicity