Which conditions are you interested in?


Age-Related Macular Degeneration (AMD)

AMD is a disease that blurs central vision and is the leading cause of vision loss among older individuals.

Tests: Dark adaptometry (DA), multifocal ERG (mfERG)

Diagnosys Stimulators: ColorDome (DA); LCD Monitor and Envoy (mfERG)

Diabetic Retinopathy

Diabetic Retinopathy

Diabetic Retinopathy is the most common cause of vision loss and blindness for people with diabetes as high blood sugar levels can damage blood vessels in the retina.

Tests: Multifocal ERG, Flash and Flicker ERG

Diagnosys Stimulators: LCD Monitor and Envoy (mfERG); ColorDome, ColorFlash and ColorBurst (Flash and Flicker)



Glaucoma is a group of eye diseases that may lead to vision loss, characterized by retinal ganglion cell damage while bipolar cells and photoreceptors remain nearly normal.

Tests: PERG, PhNR

Diagnosys Stimulators: Envoy (PERG); ColorDome, ColorBurst and ColorFlash (PhNR)

Inherited Retinal Diseases

Inherited Retinal Diseases (IRD)

IRDs are caused by different gene mutations that can cause vision loss due to dysfunction primarily of the photoreceptors. Some of the more common IRDs are retinitis pigmentosa, Stargardt disease, Leber congenital amaurosis, and achromatopsia.

Tests: ffERG, mfERG, PERG, PhNR, EOG, EER, FST, DA, pupillometry

Diagnosys Stimulators: ColorDome (ffERG, PhNR, EOG, FST, DA, pupillometry); ColorFlash (ERG, PhNR, FST, DA); ColorBurst (ffERG, PhNR); LCD monitor (mfERG); Envoy (mfERG, PERG); EER module (EER)

Neurological Conditions

Neurological Conditions

Neurological conditions may affect the visual pathway from the optic nerve head to the visual cortex resulting in vision loss or even blindness. These conditions include autism, bipolar disorder, brain tumors, idiopathic intracranial hypertension, non-organic vision loss, optic neuritis, schizophrenia, and traumatic brain injury.

Tests: ffERG, mfERG, PERG, PhNR, VEP, sweep VEP, pupillometry

Diagnosys Stimulators: ColorDome (ffERG, PhNR, fVEP, pupillometry); ColorFlash and ColorBurst (ERG, fVEP, PhNR); LCD Monitor (mfERG, sweep VEP, pVEP); Envoy (PERG, pVEP)



Pediatric disorders may cause vision loss or blindness in children due to retinal, visual pathway, or cortical pathology. These conditions include albinism, chiasmal dysfunction, cerebral visual impairment, retinal toxicity due to epilepsy medications, retinoblastoma, retinopathy of prematurity, and IRDs in infants and children.

Tests: ffERG, mfERG, PERG, sweep VEP, EOG, fVEP, pVEP

Diagnosys Stimulators: ColorDome (ffERG, EOG, fVEP); ColorFlash and ColorBurst (ERG, fVEP); Envoy (PERG, pVEP); LCD Monitor (sweep VEP, pVEP, mfERG)



Toxicity: Over time, the usage of certain medications may lead to vision loss because they can be toxic to the macula, retina, or optic nerves.

Tests: Multifocal ERG

Diagnosys Stimulators: LCD Monitor, Envoy

Which tests are you interested in?


Electroretinogram (ERG)

Examine central and peripheral retinal function.

Diagnosys Stimulators: ColorDome, ColorFlash, ColorBurst (ERG, PhNR, S-cone); LCD Monitor (mfERG); Envoy (PERG, mfERG)

Conditions: Inherited retinal diseases, glaucoma, diabetic retinopathy, and much more.


Visual Evoked Potential (VEP)

Test visual function pathway from the retina to the occipital cortex.

Diagnosys Stimulators: ColorDome, ColorFlash, ColorBurst (fVEP); LCD Monitor, Envoy (pVEP)

Conditions: Optic nerve disorders, misrouting


Electrooculargram (EOG)

Evaluate retinal pigment epithelium function in dark and light conditions.

Diagnosys Stimulators: ColorDome

Conditions: Bestrophinopathies


Electrically Evoked Response (EER)

Evaluate visual pathway from inner retina to visual cortex in absence of functioning photoreceptors. May also be known as electrically evoked potential (EEP).

Diagnosys Stimulators: EER module

Conditions: Gene therapy efficacy, inherited retinal diseases, ultra low vision


Full-Field Stimulus Threshold (FST)

Quick method to measure rod and/or cone threshold.

Diagnosys Stimulators: ColorDome, ColorFlash

Conditions: Very low vision, photophobia, gene therapy efficacy


Dark Adaptometry (DA)

Measure rod and cone thresholds, the rod-cone break, and the dynamics of dark adaptation.

Diagnosys Stimulators: ColorDome, ColorFlash

Conditions: Age-related macular degeneration, retinitis pigmentosa, congenital stationary night blindness, vitamin A deficiency, gene therapy efficacy

sweep vep

Stepwise Sweep VEP

Objectively assess visual acuity.

Diagnosys Stimulators: LCD Monitor

Conditions: Non-organic or unexplained vision loss



Measure pupillary response to flashes of light.

Diagnosys Stimulators: ColorDome

Conditions: Very low vision, neurological conditions, traumatic brain injury

Which stimulators are you interested in?


Our most versatile ganzfeld flash stimulator.

Tests: ffERG, PhNR, fVEP, DA, FST, pupillometry, EOG, S-Cone, all ISCEV and ISCEV extended ERG protocols

Conditions: Inherited retinal diseases, gene therapy efficacy, glaucoma, age-related macular degeneration, diabetic retinopathy, and much more.



Handheld flash stimulator with attention-getting auditory stimuli.

Tests: ERG, PhNR, fVEP, FST, DA

Conditions: Pediatric disorders, very low vision, inherited retinal diseases



Handheld ganzfeld flash monocular stimulator

Tests: ffERG, PhNR, fVEP

Conditions: Inherited retinal diseases, glaucoma, diabetic retinopathy

lcd monitor

LCD Monitor

Display monitor for pattern stimulation

Tests: mfERG, pVEP, sweep VEP

Conditions: Macular degeneration, toxicity, diabetic retinopathy, non-organic vision loss


OLED monitor for pattern stimulation

Tests: PERG, pVEP, mfERG

Conditions: Glaucoma, optic nerve disorders and misrouting


EER Module

EER Module provides electrical stimulation to the cornea.

Test: Electrically evoked response (EER), also may be known as electrically evoked potential (EEP)

Conditions: Gene therapy efficacy, inherited retinal diseases, ultralow vision

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