Fellow – Royal College of Surgeons, Edinburgh (elected 1997)
Fellow – American College of Surgeons
Fellow – American College of Physicians
Fellow – American Academy of Opthalmology
Fellow – International College of Surgeons
Board Member – The Cornea Society, USA (Nov 2003 to date)
Council Member – United Kingdom & Ireland Society of Refractive and Cataract Surgery (1995 to 2001)
Council Member – British Society of Cataract & Refractive Surgery (1999 to 2002)
Committee Member – Cornea Committee, American Society of Cataract and Refractive Surgery
Committee Member – Refractive Surgery Sub-committee, European Society of Cataract and Refractive Surgery
Committee Member – Cornea Sub-committtee, European Society of Cataract and Refractive Surgery
Committee Member – Medical Advisory Board, Eye Bank Association of America
Committee Member – International Relations Committee, Eye Bank Association of America (1994 to 2001)
Committee Member – Ocular Tissue Advisory Group, United Kingdom Transplant
Committee Member – Ocular Tissue Standards and Audit Group, UK Transplant
Committee Member – Refractive Sub-committee, Royal College of Ophthalmologists, UK
Member – Royal College of Ophthalmologists
Member – International Society of Refractive Keratoplast (ISRS)
Member – Ocular Microbiology and Immunology Group
Member – Paton Society, USA
Member – Association for Research in Vision and Ophthalmology
Committee Member – Refractive Surgery Sub-committee, European Society of Cataract and Refractive Surgery
Committee Member – Cornea Sub-committtee, European Society of Cataract and Refractive Surgery
Committee Member – Medical Advisory Board, Eye Bank Association of America
Committee Member – International Relations Committee, Eye Bank Association of America (1994 to 2001)
Committee Member – Ocular Tissue Advisory Group, United Kingdom Transplant
Committee Member – Ocular Tissue Standards and Audit Group, UK Transplant
Committee Member – Refractive Sub-committee, Royal College of Ophthalmologists, UK
Member – Royal College of Ophthalmologists
Member – International Society of Refractive Keratoplast (ISRS)
Member – Ocular Microbiology and Immunology Group
Member – Paton Society, USA
Member – Association for Research in Vision and Ophthalmology
Member – British Society of Refractive Surgery (BSRS)
Member – The Cornea Society (previously Castroviejo Society), USA
Chief Medical Editor – Cataract & Refractive Surgery Today – Europe
Section Editor – Cataract and Refractive Surgery “CME in Opthalmology”
Section Editor – Refractive Eye News
Reviewer – EYE, Journal for the Royal College of Ophthalmologists
Reviewer – CORNEA, International Journal of the Castroviejo Society
Reviewer – British Journal of Ophthalmology
Reviewer – Journal of Cataract & Refractive Surgery
Reviewer – Ophthalmology
Reviewer – American Journal of Ophthalmology