Tritanopia

Tritanopia is an extremely rare form of colour blindness characterised by a selective deficiency of blue vision.

Telangiectasia

Telangiectasias refer to small dilated blood vessels located near the surface of the skin or mucous membranes, measuring between 0.5 and 1 millimeter in diameter. Telangiectasia are located especially on the tongue, lips, palate, fingers, face, conjunctiva, trunk, nail beds, and fingertips.


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PMID (PMCID)
7067594
 MIXED_SAMPLE Infant
X-recessive angiopathic opticopathy.
Bastiaensen LA, Vandoninck JJ.
Doc Ophthalmol. 1982;52(3-4):227-39.
The symptoms are: slight to moderate pallor of the papillomacular bundle at the disc possibly preceded by some hyperaemia of the disc, telangiectasia on the disc with normal retinal vessels, occurrence in the second decade of life, slow progression with often subclinical visual loss, a small relative central scotoma with an intact peripheral visual field, slight acquired tritanopia and deuteranopia, and vasomotor headaches.