1 Introduction.- 1 Introduction.- 2 Statistical.- 2 Statistical methods.- Section I Donor corneas from eyes containing a malignant choroidal melanoma.- 3 Longterm follow-up study of 19 patients who received 22 corneal grafts between 1939 and 1948 from eyes enucleated because of malignant choroidal melanoma.- 4 Survival of 44 corneal grafts obtained from eyes enucleated because of malignant choroidal melanoma.- Section II Factors which may influence corneal graft survival.- 5 Different influences on corneal graft survival in 539 transplants.- 6 The effect of prospective HLA-A and -B matching on corneal graft survival.- 7 The interactions of HLA-DR, donor graft size and corneal vascularisation of the recipient on graft survival.- 8 Keratoplasty in children.- 9 The influence of intraocular lenses on corneal graft survival in patients with endothelial decompensation.- 10 The effect of prospective HLA-A and -B matching in 288 penetrating keratoplasties for herpes simplex keratitis.- Section III HLA and ABO associations in eye diseases.- 11 HLA-A and -B antigens in recurrent corneal herpes simplex virus infection.- 12 HLA-DR antigens in recurrent corneal herpes simplex virus infection.- 13 HLA and ABO antigens in kertoconus patients.- 14 HLA and ABO antigens in patients with fuchs’ endothelial dystrophy.- 15 HLA and ABO antigens in patients with malignant choroidal melanoma.- 16 Summary and general discussion.- Postscript.