Science AI Journal
Biochemistry, Genetics and Molecular Biology · Research topic

Open research questions in Retinal Development and Disorders

34 unresolved questions extracted from the limitations and future-work sections of 223 Retinal Development and Disorders papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Adenylate cyclase 5 (Adcy5) generates cyclic adenosine monophosphate (cAMP) downstream of G protein-coupled receptor signaling, yet its role in vertebrate pigmentation remains incompletely understood.

    Adenylate Cyclase 5 (Adcy5) Deficiency Impairs Pigment Granule Dispersion in Melanophores and Erythrophores in Nile Tilapia · 2026 · DOI

  • The A2 amacrine cells (ACs) are inhibitory interneurons that propagate aberrant activity to GCs, but it remains unclear whether rod or cone pathways drive altered A2-AC signaling or whether the relative contributions of these pathways change with disease progression.

    Rod pathway blockade improves visual function in a mouse model of photoreceptor degeneration · 2026 · DOI

  • There are currently no approved treatments for BVMD, and owing to its dominant nature, there remains uncertainty regarding the utility of traditional gene augmentation.

    Allele-specific correction of dominant Best vitelliform macular dystrophy in patient-derived retinal pigment epithelium · 2026 · DOI

  • Dicer-deficient MG displayed reduced glial fibrillary acidic protein (GFAP) immunoreactivity, indicating suppression of reactive gliosis; however, reduced GFAP alone was insufficient to confer neuroprotection.

    Disabling Muller Glia Preserves Retinal Function After Retinal Injury · 2026 · DOI

  • Over 30 genetic loci have been identified as contributing to AMD risk; however, the mechanisms by which genetic variants affect pathology has not been thoroughly explored.

    Single-cell quantitative trait loci analyses identify expression changes in macular degeneration risk genes · 2026 · DOI

  • Anatomical, functional and molecular alterations in the retinas of various ASD model animals have been described in the literature, but the impact on the neural composition of the retina remains unclear.

    Retinal cell mosaics in the valproate-induced rat model of autism spectrum disorder · 2026 · DOI

  • Mechanical stress has been implicated in retinal pigment epithelium (RPE) dysfunction and angiogenic signaling in retinal disorders; however, its direct in vivo effects on the RPE–choroid complex remain incompletely understood.

    Mechanical Stress Induces VEGF Expression and RPE Disruption in Mouse Eyes · 2026 · DOI

  • The electroretinogram (ERG) offers a non-invasive electrophysiological method for detecting retinal dysfunction associated with neurodegeneration; however, it remains unclear whether robust and reliable candidate biomarkers can be extracted from ERG signals beyond conventional amplitude- and latency-based parameters.

    Retinal Electrophysiological Patterns in Alzheimer's Disease: A Multi-Domain Signal Processing Framework for Non-Invasive Biomarker Discovery Using a Portable ERG Device · 2026 · DOI

  • This report has several limitations. First, it describes a single patient and thus cannot establish incidence, risk factors, or causality. Second, we did not perform standardized FST at all follow-up visits. This limits not only direct comparison with published series in which FST was a major functional endpoint, but also our ability to evaluate longitudinal changes in global retinal sensitivity in relation to progressive CRA. Thus, although the early post-treatment FST improvement supports an initial functional response, the long-term interpretation of structure–function dissociation in this case relies mainly on BCVA, kinetic visual fields, and MLMT. Third, NEI VFQ-25 was available only at baseline and during the early postoperative period, and no systematic long-term patient-reported outcome assessment was performed. Therefore, the durability of subjective quality-of-life benefit could not be evaluated in parallel with the objective functional measures over 4 years. Fourth, although the MLMT was performed with reference to the published protocol, it was not conducted in a fully standardized, trial-equivalent setting. Therefore, the MLMT findings in this case should be interpreted as supportive real-world functional data rather than as directly comparable to MLMT 9 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 outcomes reported in prior clinical trials. Finally, detailed microperimetric mapping of the scotoma was not available, which constrains precise structure–function correlation in the macular region. The structural-functional dissociation described in this case is based on global functional measures and should not be assumed to apply uniformly at the local macular level.

    Four-Year Structural and Functional Outcomes of the First Subretinal Voretigene Neparvovec-rzyl Treatment for RPE65-Associated Inherited Retinal Dystrophy in Korea · 2026 · DOI

  • To assess the functional impact of CNGA1 missense variants, we attempted to adapt our aequorin-based bio- assay by replacing CNGA3 with CNGA1, which may be considered the major limitation of our study.

    Systematic functional evaluation of CNGA1 missense variants associated with retinitis pigmentosa · 2026 · DOI

  • The aim of this document is to provide a more detailed overview of the understanding of the role of retinoid signalling in several organ systems for which more information may be known, as well as evaluate potential gaps in knowledge, and identify potential markers and endpoints that could be added to existing OECD test guidelines, in addition to in vitro and ex vivo test systems that measure retinoid pathway targets.

    Detailed review paper on the Retinoid System · 2021 · DOI

  • Frequency biases varied widely across listeners, as shown by the histogram of the acoustic point of subjective equivalence for the group of people who reported each Current Biology 28, R737–R759, July 9, 2018 ª 2018 Elsevier Ltd.

    Sensory Biology: How to Structure a Tailor-Made Retina · 2018 · DOI

  • While the paper mentions that intrinsically photosensitive retinal ganglion cells comprise distinct subpopulations innervating different brain regions (hypothalamus, olivary pretectal nucleus) for different functions (circadian, pupillary), the molecular and physiological characterization of these subpopulation-specific properties and their differential responses to light wavelengths remain incompletely described.

    Chemistry and Biology of Vision · 2012 · DOI

  • The paper notes that ganglion cells are spatially separated from the RPE and cannot access the canonical retinoid cycle for chromophore recycling, but the specific mechanisms by which melanopsin's bistable chromophore is maintained and regenerated in vivo remain unclear and require detailed metabolic pathway analysis.

    Chemistry and Biology of Vision · 2012 · DOI

  • The paper describes two competing hypotheses for light-dependent sleep regulation in retinal degeneration patients—either few surviving photoreceptors suffice, or other light-sensitive retinal cells mediate the response—but lacks quantitative data on the minimum number of photoreceptors or melanopsin-expressing ganglion cells required to maintain circadian photoentrainment.

    Chemistry and Biology of Vision · 2012 · DOI

  • The paper states that melanopsin structure remains unknown, with only inference from invertebrate rhodopsin crystallography available. Direct structural characterization of melanopsin through crystallographic studies or cryo-EM is needed to understand how it differs from bovine rhodopsin in its G protein recognition surface and bistable chromophore binding mechanism.

    Chemistry and Biology of Vision · 2012 · DOI

  • If we assume that in protanopia the ((red” photo- Svaetichin & MacNichol : Retinal Mechanisms 401 pigment is lacking, we may assume that the photopigments with maximal absorption in the long wave-end of the spectrum will also be absent from the luminosity cones of a protanope. If some of the presumably 5 or 6 photopigments are lacking in the luminosity cone, an alteration of the peak, the shape, and the absolute sensitivity of the luminosity function can be expected.

    RETINAL MECHANISMS FOR CHROMATIC AND ACHROMATIC VISION · 1958 · DOI

  • However, regional variation in EV composition in human RPE-Choroid tissues remains poorly characterised.

    Region-Specific Proteomic Profiles of Extracellular Vesicles (EVs) Derived from Human Macular and Peripheral RPE-Choroid Explants · 2026 · DOI

  • The mechanism underlying magnetoreception is not fully understood, but one well-supported hypothesis involves a radical-pair formation in the blue light receptor cryptochrome type 4a.

    Expression patterns and interaction profiles of heterotrimeric transducin subunits in the retina of the European robin (Erithacus rubecula) · 2026 · DOI

  • Autosomal dominant cone-rod dystrophy caused by GUCA1A mutations is generally viewed as a disorder of phototransduction, yet the mechanisms linking photoreceptor dysfunction to progressive vision loss remain unclear.

    A knock-in model of severe GUCA1A cone-rod dystrophy reveals retinal network dysfunction beyond phototransduction · 2026 · DOI

  • Foveal hypoplasia causes visual impairment across congenital eye disorders, yet the genetic programmes governing foveal development remain poorly characterised and no tractable model exists for foveal disease.

    Genome-wide association and multi-omics functional screens reveal the genetic architecture of foveal development · 2026 · DOI

  • Although these early events are critical for proper synapse development, little is known about the molecular mechanisms that establish horizontal cell to photoreceptor connectivity during development.

    Ankyrins are essential at the photoreceptor synapse in the mouse outer retina · 2026 · DOI

  • This case report is limited by the absence of functional validation studies, such as protein or mRNA expression assays, due to lack of available biological sam- ples at the time of reevaluation.

    CRB1 gene variant in leber congenital amaurosis: molecular and clinical investigations · 2026 · DOI

Most-cited papers in Retinal Development and Disorders

Most recent work

Find a gap in your own Retinal Development and Disorders sub-topic

This page shows what the Retinal Development and Disorders literature already flags as unresolved. To narrow it to your specific question, run the guided finder — it searches the gap library on demand and checks candidates against 250M+ OpenAlex works.

Open the Research Gap Finder →

Related topics in Biochemistry, Genetics and Molecular Biology

Gut microbiota and health
289 open questions
Single-cell and spatial transcriptomics
185 open questions
dental development and anomalies
121 open questions
Mitochondrial Function and Pathology
110 open questions
Genetic Associations and Epidemiology
106 open questions
Human-Animal Interaction Studies
105 open questions
Genomics and Chromatin Dynamics
97 open questions
Inflammatory Bowel Disease
91 open questions
34 open questions have been extracted from the limitations and future-work passages of 223 Retinal Development and Disorders papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

Tools for your next paper

Gaps & Literature SearchFind open questions in any field — 120,000+ open gaps mined from our own library.Pre-CheckIs your paper ready? A Tier 1–5 acceptance probability in seconds.Journal FinderA ranked shortlist of target journals from a 17,500-venue index.Duplicate Publication CheckerCheck prior-publication & salami-slicing risk across 8 sources.Citation GeneratorFreeA DOI or title → APA, MLA, Vancouver, Chicago, BibTeX, RIS. No signup.Graphical Abstract MakerFreeTurn your findings into a colorblind-safe graphical abstract.

Compare the category — Honest roundups of the AI research tools, ours listed alongside the alternatives.

Command palette

Jump anywhere, run any action.