What is the first step in checking a scleral lens fit?

The first step in checking a scleral lens fit centers around observing the lens during its initial insertion to ensure a successful placement. Preventing bubbles during lens insertion is critical because the presence of air bubbles can lead to inaccurate assessments of the lens fit and may cause discomfort for the wearer. A proper fit relies on a seamless interaction between the lens and the cornea, and air bubbles can disrupt this.

Once the lens is properly inserted without bubbles, other steps follow, such as allowing the lens to settle to evaluate how it aligns with the ocular surface over time. Additionally, fluorescein evaluation and assessing corneal clearance are vital components in the fitting process, but they occur after confirming that the lens has been successfully inserted without compromising the fit with trapped air. Thus, starting with the avoidance of bubbles is essential for ensuring optimal fitting conditions and comfort.