Observational studyDocumenta ophthalmologica. Advances in ophthalmology2017
Differences in ocular findings in two siblings: one with complete and other with incomplete achromatopsia.
Observational study in Documenta ophthalmologica. Advances in ophthalmology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 11 citations in OpenAlex.
- DELETION INVOLVING EXON 18 OF RPGRIP1 IS a MAJOR CAUSE OF ACHROMATOPSIA.Retina (Philadelphia, Pa.) · 2026Observational
- From Cellular to Metabolic: Advances in Imaging of Inherited Retinal Diseases.Diagnostics (Basel, Switzerland) · 2024Review
- A homozygous structural variant ofGenetics in medicine open · 2024Article
- Clinical characteristics and high resolution retinal imaging of retinitis pigmentosa caused by RP1 gene variants.Japanese journal of ophthalmology · 2020Article
- Three cases of acute-onset bilateral photophobia.Japanese journal of ophthalmology · 2019Observational
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Authors and funding
9 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposePatients with complete achromatopsia (ACHM) lack cone function, and patients with incomplete ACHM have relatively good visual acuity with residual color vision. The pathological mechanism(s) underlying incomplete ACHM has not been determined. The purpose of this study was to determine the pathophysiology of ACHM in two siblings: one with complete ACHM and the other with incomplete ACHM.
methodsThe medical charts of the two siblings were reviewed.
resultsThe sibling with incomplete ACHM had decimal visual acuities that ranged from 0.4 to 0.6 and had moderate color blindness in both eyes. Her younger brother was diagnosed with complete ACHM and was not able to hold fixation, had severe pendular nystagmus, visual acuity that ranged from 0.08 to 0.1, and severe color vision abnormalities in both eyes. Optical coherence tomography (OCT) showed that the ellipsoid zone (EZ) was disruptive in the macular region in both patients. However, careful examination of the OCT images in the incomplete ACHM patient showed a high-density EZ in the central fovea. Adaptive optics (AO) fundus imaging of the sibling with incomplete ACHM revealed sparse cone mosaics remaining within 1° of the foveal center with no mosaics visible outside the central fovea. AO fundus imaging could not be performed in Case 2 because of the severe nystagmus.
conclusionOur results showed that cone mosaics were present in the central fovea in the sibling with incomplete ACHM patient. This may explain the better visual acuity and color vision in this sibling.
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