Ken Pullum is a contact lens practitioner with a specialist interest in clinical applications including keratoconus, post corneal transplant and in particular scleral lens practice. Ken divides his time between the UK hospital eye service and his Hertford office, which has been established for over 20 years. His many publications include papers on scleral lenses and Keratoconus in the Cornea, the CLAO journal, the BJO, Eye, the BCLA and optometry journals and chapters in contact lens text books in the UK and overseas.

Shima Shah is an optometrist and contact lens practitioner with a special interest in paediatric optometry. Shima currently spends most of her time working at a number of hospital eye clinics around the London area with 8 years experience.