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 optical correction, 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 appliesFor patients with any of the following:(a) myopia of 5.0 dioptres or greater (spherical equivalent) in at least one eye; (b) manifest hyperopia of 5.0 dioptres or greater (spherical equivalent) in at least one eye; (c) astigmatism of 3.0 dioptres or greater in at least one eye; (d) anisometropia of 3.0 dioptres or greater (difference between spherical equivalents)Applicable once for each condition in a period of 36 months