The photoreceptor mosaic
P K Ahnelt · Eye · 1998 · Anatomical review of the human retinal photoreceptor mosaic
Original publication · Original publication · Original publication
Recorded summary
Ahnelt describes how human rods and cones are distributed across the retina. Cone packing is especially dense near the fovea; different cone populations have different arrangements. This provides biological context for exploring local packing and sampling geometry in Vision Atlas.
Recorded limitations
The review does not demonstrate a universal perfect hexagonal retina, tetrahedral visual processing, or a Fibonacci mechanism. It is anatomical evidence, not an EMDR treatment trial or a quantum-stability experiment.
Evidence and provenance
Chapter Trust Factor uses a minimum of three distinct qualifying studies. Publication records retain their own evidence and assessment.
Study design and assessment
- design
- Anatomical review of the human retinal photoreceptor mosaic
- assessment
- category
- peer-reviewed
- peer Reviewed
- true
- basis
- Anatomical review of the human retinal photoreceptor mosaic. This is not a clinical efficacy trial.
- sources
https://www.nature.com/articles/eye1998142 · https://doi.org/10.1038/eye.1998.142 · https://pubmed.ncbi.nlm.nih.gov/9775214/
- reviewed At
- 2026-10-26
- trust Factor
- score
- 1
- scope
- Paper
- status
- assessed
- randomized Controlled Trial
- false
- blinding
- not-applicable
- peer Reviewed
- true
- basis
- Anatomical review of the human retinal photoreceptor mosaic. This is not a clinical efficacy trial.
- sources
https://pubmed.ncbi.nlm.nih.gov/9775214/ · https://www.nature.com/articles/eye1998142 · https://doi.org/10.1038/eye.1998.142
- review Scope
- Existing publication-specific assessments and bibliographic indexing; no blanket full-text appraisal.
- assessed At
- 2026-10-27
- jadad
- status
- not-applicable
- score
- Not recorded
- reason
- Not a human randomised clinical trial.
- evidence
- evidence Type
- Anatomical review of the human retinal photoreceptor mosaic
- evidence Class
- anatomical_review
- measurement
- Spatial sampling by retinal photoreceptor populations.
- relationship Note
- Compare the Atlas geometry with measured local packing, density and irregularity; retain the differences between retinal regions.
- clinical Evidence
- false
- review Depth
- Publisher or author abstract and bibliographic metadata; selected explanatory sections where available.
- hypothesis Boundary
- Connections to M9 P24, Alpha, Beta, Gamma and Epsilon remain research hypotheses. Shared geometry does not establish a shared physical mechanism.
Topics and recorded topic scores
- key
- vision:vision-geometry
- title
- Retinal mosaics, cortical maps and visual space
- collection
- vision
- trust Score
- 1
Citation snapshot and identifiers
- id
- vision-photoreceptor-mosaic-1998
- doi
- 10.1038/eye.1998.142
- pmid
- 9775214
- citation Snapshot
- count
- 79
- source
- Crossref
- retrieved At
- 2026-10-26
- citations By Collection
- vision
- 79
Complete approved library record
- id
- vision-photoreceptor-mosaic-1998
- publication Key
- doi:10.1038/eye.1998.142
- aliases
- None recorded
- title
- The photoreceptor mosaic
- journal
- Eye
- publisher Family
- nature
- publisher Family Label
- Nature Portfolio
- neurotransmitters
- None recorded
- year
- 1998
- authors
- P K Ahnelt
- design
- Anatomical review of the human retinal photoreceptor mosaic
- kind
- Journal article
- identity Conflict
- Not recorded
- doi
- 10.1038/eye.1998.142
- pmid
- 9775214
- urls
https://www.nature.com/articles/eye1998142 · https://doi.org/10.1038/eye.1998.142 · https://pubmed.ncbi.nlm.nih.gov/9775214/
- collections
vision
- categories
Vision geometry · Brain & nervous system
- targets
- None recorded
- priority
- 1
- quotes
- None recorded
- summary
- Ahnelt describes how human rods and cones are distributed across the retina. Cone packing is especially dense near the fovea; different cone populations have different arrangements. This provides biological context for exploring local packing and sampling geometry in Vision Atlas.
- limitation
- The review does not demonstrate a universal perfect hexagonal retina, tetrahedral visual processing, or a Fibonacci mechanism. It is anatomical evidence, not an EMDR treatment trial or a quantum-stability experiment.
- citation Count
- 79
- citation Snapshot
- count
- 79
- source
- Crossref
- retrieved At
- 2026-10-26
- study Design Assessment
- category
- peer-reviewed
- peer Reviewed
- true
- basis
- Anatomical review of the human retinal photoreceptor mosaic. This is not a clinical efficacy trial.
- sources
https://www.nature.com/articles/eye1998142 · https://doi.org/10.1038/eye.1998.142 · https://pubmed.ncbi.nlm.nih.gov/9775214/
- reviewed At
- 2026-10-26
- paper Trust Assessment
- score
- 1
- scope
- Paper
- status
- assessed
- randomized Controlled Trial
- false
- blinding
- not-applicable
- peer Reviewed
- true
- basis
- Anatomical review of the human retinal photoreceptor mosaic. This is not a clinical efficacy trial.
- sources
https://pubmed.ncbi.nlm.nih.gov/9775214/ · https://www.nature.com/articles/eye1998142 · https://doi.org/10.1038/eye.1998.142
- review Scope
- Existing publication-specific assessments and bibliographic indexing; no blanket full-text appraisal.
- assessed At
- 2026-10-27
- citations By Collection
- vision
- 79
- topics
- key
- vision:vision-geometry
- title
- Retinal mosaics, cortical maps and visual space
- collection
- vision
- trust Score
- 1
- journal Key
- eye
- journal Label
- Eye
- chapter Entries
- id
- vision-vision-geometry-vision-photoreceptor-mosaic-1998
- title
- The photoreceptor mosaic
- doi
- 10.1038/eye.1998.142
- pmid
- 9775214
- journal
- Eye
- year
- 1998
- published
- 1998-05
- authors
- P K Ahnelt
- urls
https://www.nature.com/articles/eye1998142 · https://doi.org/10.1038/eye.1998.142 · https://pubmed.ncbi.nlm.nih.gov/9775214/
- collections
vision
- categories
Vision geometry · Brain & nervous system
- targets
- None recorded
- origin
- geometry-literature-20261026
- priority
- 1
- kind
- Journal article
- design
- Anatomical review of the human retinal photoreceptor mosaic
- summary
- Ahnelt describes how human rods and cones are distributed across the retina. Cone packing is especially dense near the fovea; different cone populations have different arrangements. This provides biological context for exploring local packing and sampling geometry in Vision Atlas.
- finding
- Ahnelt describes how human rods and cones are distributed across the retina. Cone packing is especially dense near the fovea; different cone populations have different arrangements. This provides biological context for exploring local packing and sampling geometry in Vision Atlas.
- limitation
- The review does not demonstrate a universal perfect hexagonal retina, tetrahedral visual processing, or a Fibonacci mechanism. It is anatomical evidence, not an EMDR treatment trial or a quantum-stability experiment.
- citation Count
- 79
- citation Snapshot
- count
- 79
- source
- Crossref
- retrieved At
- 2026-10-26
- study Design Assessment
- category
- peer-reviewed
- peer Reviewed
- true
- basis
- Anatomical review of the human retinal photoreceptor mosaic. This is not a clinical efficacy trial.
- sources
https://www.nature.com/articles/eye1998142 · https://doi.org/10.1038/eye.1998.142 · https://pubmed.ncbi.nlm.nih.gov/9775214/
- reviewed At
- 2026-10-26
- evidence
- evidence Type
- Anatomical review of the human retinal photoreceptor mosaic
- evidence Class
- anatomical_review
- measurement
- Spatial sampling by retinal photoreceptor populations.
- relationship Note
- Compare the Atlas geometry with measured local packing, density and irregularity; retain the differences between retinal regions.
- clinical Evidence
- false
- review Depth
- Publisher or author abstract and bibliographic metadata; selected explanatory sections where available.
- hypothesis Boundary
- Connections to M9 P24, Alpha, Beta, Gamma and Epsilon remain research hypotheses. Shared geometry does not establish a shared physical mechanism.
- jadad
- status
- not-applicable
- score
- Not recorded
- reason
- Not a human randomised clinical trial.
- quotes
- None recorded
- archive Entries
- None recorded
- verified At
- 2026-10-26
- source Provenance
- origin
- Vision Atlas citations
- notion Page
- Not recorded
- reviewed At
- 2026-10-26
- publisher Family
- nature
- publisher Family Label
- Nature Portfolio
- record Id
- vision-photoreceptor-mosaic-1998
- source Pages
- None recorded
- paper Trust Assessment
- score
- 1
- scope
- Paper
- status
- assessed
- randomized Controlled Trial
- false
- blinding
- not-applicable
- peer Reviewed
- true
- basis
- Anatomical review of the human retinal photoreceptor mosaic. This is not a clinical efficacy trial.
- sources
https://pubmed.ncbi.nlm.nih.gov/9775214/ · https://www.nature.com/articles/eye1998142 · https://doi.org/10.1038/eye.1998.142
- review Scope
- Existing publication-specific assessments and bibliographic indexing; no blanket full-text appraisal.
- assessed At
- 2026-10-27
- publication Key
- doi:10.1038/eye.1998.142
- collection
- vision
- chapter Number
- 6
- topic Id
- vision-geometry
- topic Title
- Retinal mosaics, cortical maps and visual space
- trust Score
- 1
- evidence
- evidence Type
- Anatomical review of the human retinal photoreceptor mosaic
- evidence Class
- anatomical_review
- measurement
- Spatial sampling by retinal photoreceptor populations.
- relationship Note
- Compare the Atlas geometry with measured local packing, density and irregularity; retain the differences between retinal regions.
- clinical Evidence
- false
- review Depth
- Publisher or author abstract and bibliographic metadata; selected explanatory sections where available.
- hypothesis Boundary
- Connections to M9 P24, Alpha, Beta, Gamma and Epsilon remain research hypotheses. Shared geometry does not establish a shared physical mechanism.
- jadad
- status
- not-applicable
- score
- Not recorded
- reason
- Not a human randomised clinical trial.
- condition Evidence
- None recorded
- conditions
- None recorded
- topic Trust Scores
1
- full Text
- status
- curated-record
- retrieval Available
- false
- url
- https://www.nature.com/articles/eye1998142
- checked At
- 2026-10-26
- indexed Content
- Verified metadata and original research summary are indexed. Full article text is not indexed in this update.