WordNet

the transparent dome-shaped anterior portion of the outer covering of the eye; it covers the iris and pupil and is continuous with the sclera
a small yellowish central area of the retina that is rich in cones and that mediates clear detailed vision (同)macula_lutea, macular_area, yellow_spot

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Høvding G.SourceOyeavdlingen Haukeland Sykehus, Bergen.
Tidsskrift for den Norske lægeforening : tidsskrift for praktisk medicin, ny række.Tidsskr Nor Laegeforen.1999 Nov 20;119(28):4209-12.
The first successful corneal transplantation was done in 1906, when the corneas of a recently deceased boy were transferred to a man blinded by an alkali burn. Since then, improved equipment, microsurgical technique and better methods for treating postoperative complications have greatly improved th
PMID 10668385