Mouse Models of Congenital Stationary Night Blindness in the MICRON Literature

About the MICRON Research Literature

These research pages organize published studies using MICRON imaging systems by animal species and the disease or condition investigated.

All publication counts and figures reflect the complete indexed research collection.

Explore related studies through the MICRON Research Hubs or search the complete publication collection in the reSEARCH portal.

Understanding Congenital Stationary Night Blindness

Congenital stationary night blindness names a group of inherited conditions that impair vision in dim light from early life and are defined primarily by retinal signaling or visual-cycle dysfunction rather than by a relentlessly progressive photoreceptor degeneration.

In the forms that carry an electronegative electroretinogram the break lies at the first retinal synapse, between photoreceptors and bipolar cells:

• The complete form loses signaling through the depolarizing ON-bipolar pathway
• The incomplete form impairs transmitter release at the photoreceptor terminal and leaves the ON and OFF pathways each partly working

That waveform, a preserved a-wave with a reduced or absent b-wave, is an important functional feature of the group but is neither universal within it nor specific to it: forms whose defect sits earlier, in phototransduction or in regeneration of the chromophore, do not produce it, and unrelated retinal and vascular conditions can.

"Stationary" describes a clinical course rather than a guarantee, and it separates this group from the progressive dystrophies while individual genotypes, in patients and in animal lines alike, have been reported to lose photoreceptors over time.

Congenital Stationary Night Blindness in Experimental Research

The mouse retina is rod-dominated and its electroretinogram is generated by retinal cell classes homologous to those measured in people, so gene-specific defects in phototransduction, photoreceptor-to-bipolar signaling and the visual cycle can be studied functionally. How closely a mouse line reproduces the human electroretinographic phenotype depends on the genotype and should not be assumed from the shared gene alone.

What it cannot supply is the patient's side of the condition: the reported experience of vision in dim light, and the reduced acuity, nystagmus and refractive error that accompany some forms in people.

Mouse Models of Congenital Stationary Night Blindness

The mouse carries most of this work.

Transgenic and knockout lines allow a pathway to be removed or overexpressed, and cost, availability, short generation time and a large body of background data reinforce the choice.

A genetic manipulation constrains rather than isolates a mechanism: developmental compensation and pleiotropy remain possible.

Published MICRON Research: Congenital Stationary Night Blindness in Mice

This page lists 3 papers from the MICRON literature, published 2019 to 2020, that study congenital stationary night blindness in mice.

Of these publications:

• 3 studies used mice as the primary congenital stationary night blindness disease model.

Scope of the literature collection: Publication counts reflect studies identified and indexed in the MICRON research corpus. This collection is not intended to represent an exhaustive review of all published congenital stationary night blindness research.

Which imaging and experimental techniques are used in these studies?

Technique counts are paper-level co-occurrences and do not necessarily indicate that a technique was applied to the focal species or focal disease model.

Capabilities and Limitations of Imaging Techniques

A summary of what each imaging technique listed above can measure, the information it provides, and its limitations in research applications.

Electroretinography

Records the retina's electrical response to light, giving component-sensitive information about outer- and inner-retinal function. It measures function directly, which no structural method does. Full-field ERG sums across the whole retina, so a small lesion can leave the trace unchanged; focal and multifocal variants trade signal amplitude for spatial resolution.

Optical Coherence Tomography

Optical coherence tomography provides high-resolution, cross-sectional images of ocular tissues in the living eye, allowing researchers to visualize structures at different depths. OCT is particularly useful for measuring tissue thickness, identifying structural abnormalities, and assessing the location and extent of tissue changes.

As a non-invasive imaging technique, OCT enables repeated measurements in the same eye over time, supporting longitudinal studies of disease progression and treatment response. Although OCT provides detailed structural information, it does not directly measure cellular activity or visual function. Tissue that appears structurally normal may still have functional abnormalities, making OCT a valuable companion to functional assessments such as electroretinography (ERG).

Topical Ophthalmic Drug Delivery

A compound applied as drops to the ocular surface. It is non-invasive and repeatable, so it supports frequent dosing without a procedure for each dose. What the route has to establish depends on the target: for an ocular-surface target, residence time and penetration into the surface tissue are the main barriers; for an intraocular anterior-segment target, the compound must cross ocular-surface and corneal or conjunctival barriers and reach an intraocular concentration sufficient for the experiment; for a posterior-segment target, additional ocular barriers separate the surface from the target and posterior-segment exposure is harder to establish.

Which MICRON systems and add-ons appear?

Which strains and genetic lines are used?

What other conditions are recorded on the same papers?

Which MICRON configurations appear in this work?

Configurations recorded in these papers, and the techniques recorded alongside them.

The papers

Browse all hubs at MICRON Research Hubs. The full corpus is searchable in the reSEARCH portal.