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Our patient had no systemic comorbidities and has shown excellent milestone progression. She is now in a mainstream school with support advancing into higher levels of the Braille system. Our case highlights the importance of thorough investigation to identify the salient features of the condition and establish a differential diagnosis early which helped to facilitate sufficient social support to aid with the patient\u2019s development.<\/jats:p>","DOI":"10.1136\/bcr-2025-268840","type":"journal-article","created":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T13:25:20Z","timestamp":1785417920000},"page":"e268840","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Congenital aplasia of the optic chiasm presenting as optic nerve hypoplasia with no other ocular or systemic comorbidity"],"prefix":"10.1136","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9524-1947","authenticated-orcid":false,"given":"Owuraku Asiedu","family":"Titi-Lartey","sequence":"first","affiliation":[{"name":"Ophthalmology, Royal Eye Infirmary, Plymouth, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joshua","family":"Feyi-Waboso","sequence":"additional","affiliation":[{"name":"Ophthalmology, Royal Eye Infirmary, Plymouth, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leticia","family":"Royo-Dujardin","sequence":"additional","affiliation":[{"name":"Ophthalmology, Royal Eye Infirmary, Plymouth, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2026,7,30]]},"reference":[{"key":"2026073006251047000_19.7.e268840.1","doi-asserted-by":"crossref","unstructured":"O\u2019Malley CD . 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