All professional attendances after the first, being those attendances regarded as a single service, in a single course of attention involving the prescription and fitting of contact lenses, for patients with corrected visual acuity of 0.7 logMAR (6/30) or worse in both eyes, being patients for whom a contact lens is prescribed as part of a telescopic system, being a course of attention for which the first attendance is a service to which item 10905, 10907, 10910, 10911, 10913, 10914, 10915 or 10916 appliesApplicable once in a period of 36 months