The dialogue of the seraphic virgin, Catherine of Siena : dictated by her, while in a state of ecstasy, to her secretaries, and completed in the year of our Lord 1370; together with an account of her death by an eye-witness /

Translation of Libro della divina dottrina.

Diseases of the eye, ear, throat, and nose, a manual for students and practitioners,

Mode of access: Internet.

May's manual of the diseases of the eye.

On spine, 1947- Mays̓ diseases of the eye.

The refraction of the eye. A manual for students.

Mode of access: Internet.

A squint-eye view of America.

Mode of access: Internet.

Ueber die wundervolle Entstehung des Menschen aus einem dem Senfkorne an Größe gleichenden Eye, und über die Erzeugung schöner Kinder, aus Gründen hergeleitet und religiös dargestellt

von A. H. C. Gelpke

A genome scan for eye color in 502 twin families: Most variation is due to a QTL on chromosome 15q

We have rated eye color on a 3-point scale (1=blue/grey, 2=hazel/green, 3=brown) in 502 twin families and carried out a 5-10 cM genome scan (400-757 markers). We analyzed eye color as a threshold trait and performed multipoint sib pair linkage analysis using variance components analysis in Mx. A lod of 19.2 was found at the marker D15S1002, less than 1 cM from OCA2, which has been previously implicated in eye color variation. We estimate that 74% of variance in eye color liability is due to this QTL and a further 18% due to polygenic effects. However, a large shoulder on this peak suggests that other loci affecting eye color may be telomeric of OCA2 and inflating the QTL estimate. No other peaks reached genome-wide significance, although lods >2 were seen on 5p and 14q and lods >1 were additionally seen on chromosomes 2, 3, 6, 7, 8, 9, 17 and 18. Most of these secondary peaks were reduced or eliminated when we repeated the scan as a two locus analysis with the 15q linkage included, although this does not necessarily exclude them as false positives. We also estimated the interaction between the 15q QTL and the other marker locus but there was only minor evidence for additive x additive epistasis. Elaborating the analysis to the full two-locus model including non-additive main effects and interactions did not strengthen the evidence for epistasis. We conclude that most variation in eye color in Europeans is due to polymorphism in OCA2 but that there may be modifiers at several other loci.

Eye colour: portals into pigmentation genes and ancestry

Several recent papers have tried to address the genetic determination of eye colour via microsatellite linkage, testing of pigmentation candidate gene polymorphisms and the genome wide analysis of SNP markers that are informative for ancestry. These studies show that the OCA2 gene on chromosome 15 is the major determinant of brown and/or blue eye colour but also indicate that other loci will be involved in the broad range of hues seen in this trait in Europeans.