Evidence for commonly used teaching, learning and assessment methods in contact lens clinical skills education.

Introduction: Evidence based practice is now an important part of healthcare education. The aim of this narrative literature review was to determine what evidence exists on the efficacy of commonly used teaching and learning and assessment methods in the realm of contact lens skills education (CLE) in order to provide insights into best practice. A summary of the global regulation and provision of postgraduate learning and continuing professional development in CLE is included.

Differences in Practitioner Experience, Practice Type, and Profession in Attitudes Toward Growing Contact Lens Practice.

Objective: To investigate eye care practitioners' attitudes and perceptions toward potential interventions that can enhance contact lens (CL) practice across the world, and how this is influenced by their practice setting.

Methods: A self-administered, anonymized survey was constructed in English and then forward and backward translated into six more languages. The survey was distributed online via social media platforms and mailing lists involving reputed international professional bodies.

Predicting corneal refractive power changes after orthokeratology.

This study aimed to characterise corneal refractive power (CRP) changes along the principal corneal meridians during orthokeratology (OK). Nineteen myopes (mean age 28 ± 7 years) were fitted with OK lenses in both eyes. Corneal topography was captured before and after 14 nights of OK lens wear.

CLEAR - Contact lens wettability, cleaning, disinfection and interactions with tears.

Contact lens materials have undergone significant changes over the past 20 years, particularly with respect to the introduction of silicone hydrogel materials. Whilst this development addressed hypoxic issues, other important areas relating to contact lens success, notably comfort, require further research. Contact lens wettability remains a crucially important part of biocompatibility.

Reducing treatment zone diameter in orthokeratology and its effect on peripheral ocular refraction.

Purpose: To determine whether orthokeratology (OK) induced treatment zone (TZ) diameter can be reduced by altering OK lens design, and if so the impact of modifying TZ diameter on relative peripheral refraction (RPR).

Methods: 16 subjects (mean age 23.4 ± 1.

Accuracy and Repeatability of an Anterior Segment Swept-Source Optical Coherence Tomographer.

Objectives: To assess accuracy and repeatability of the CASIA swept-source optical coherence tomographer (SS-OCT) in measuring contact lens (CL) radii of curvature and thicknesses compared with verified CL parameters and to investigate intrasession and intersession repeatability of the CASIA SS-OCT in measuring epithelial and total corneal thicknesses.

Methods: Rigid CLs with varying radii of curvature (front, rf; back, rb) and thicknesses were imaged with the CASIA SS-OCT across two sessions. Contact lens parameters were measured from processed images using an automated MATLAB program and were compared with parameters verified using standard techniques.

Treatment Zone Decentration During Orthokeratology on Eyes with Corneal Toricity.

Purpose: To compare the magnitude of treatment zone decentration between eyes with minimally toric corneas (≤1.50 DC, LoTor group) and eyes with moderately toric corneas (1.50 to 3.

Variation in normal corneal shape and the influence of eyelid morphometry.

Purpose: To investigate variation in normal corneal shape and the influence of eyelid morphometry on corneal shape in primary gaze.

Methods: Corneal topography (Medmont E300) and external eye photographs (Nikon D5000 SLR camera) were captured in primary gaze from 32 East Asians (13 male and 19 female subjects, 18 to 37 years) and 32 non-East Asians (10 male and 22 female subjects, 18 to 30 years). Participants with refractive error within ±6.

Central and paracentral corneal curvature changes during orthokeratology.

Purpose: To investigate regional changes in corneal curvature and power induced by overnight orthokeratology (OK) contact lens wear over a period of 2 weeks.

Methods: Corneal topography data (Medmont E300) from 21 myopes (12 M, 9F, 20 to 40 years), who had worn BE OK lenses manufactured in Boston XO material for 14 nights, were analyzed retrospectively. Enrollment criteria were myopia up to 4.

Evaluation of corneal elevation and thickness indices in pellucid marginal degeneration and keratoconus.

Purpose: To determine and compare corneal elevation and thickness indices, thereby formulating a reliable index to distinguish eyes with pellucid marginal degeneration (PMD) from keratoconus eyes and normal (control) eyes.

Setting: LV Prasad Eye Institute, Hyderabad, India.

Design: Initial model-building retrospective study.