Sir, Corneal cross-linking (CXL) describes a procedure whereby topical riboflavin is combined with ultraviolet (UV) light exposure to stabilize corneal ectasias such as keratoconus. Treatment for keratoconus up to now has been supportive only, and as such clinical interest in the procedure is high. Supportive evidence exists in large case series,1, 2, 3 small RTCs3 and large RCTs are underway4, 5 but CXL does not yet have full NICE approval. The aim of our survey was to get an overview of current provision of CXL in England. The Royal College of Ophthalmologists provided a list of corneal consultants, which was cross-checked by telephoning all hospitals in the ophthalmic directory. An online survey was created and sent electronically to all (Figure 1). Figure 1. Eight question online survey sent to all corneal consultants in England. Out of the 115 Ophthalmology units in England, 98 offer a corneal service. The survey response rate was 42% (41 out of 98 units). Of those that responded, 32% currently offer CXL: 10% under the NHS, 12% privately, and 10% both privately and under the NHS. The reported average number of patients being treated is eight per quarter. The reported average length of time CXL has been offered for is 2 years, with NHS CXL being offered on average for a year longer than privately. Regarding units not currently offering CXL, the majority (64%) plan to initiate services in the near future. Rapid CXL, in which UV power is increased and exposure time reduced, is used by 54% whereas 46% used standard CXL (all consultants offering CXL only under the NHS only use standard CXL). Lastly, 77% infuse riboflavin after removing the epithelium, 8% use transepithelial riboflavin infusion and 15% use both methods. In summary, CXL is becoming more commonly available with the majority of departments planning to initiate services. Rapid CXL is becoming the favoured choice; however, the majority still remove the corneal epithelium. The NHS Commissioning Board has added CXL service to its consultation for specialized commissioning. Hence, CXL will probably be limited to specialist centres. Online surveys are easily applied and useful in gauging a snapshot of opinion, but must be used with caution because of difficulty in responses subgroup analysis.