Objective:

To explore how tear film instability affects refractive variability and higher-order aberrations in patients, particularly those with dry eye disease, and to highlight its clinical significance.

Key Findings:

• Tear film instability contributes to higher-order aberrations, leading to fluctuating vision and inconsistent refractive findings, as evidenced by patient reports.
• Chronic ocular surface inflammation drives tear film instability, creating a cycle that exacerbates visual quality issues, which can be quantified in future studies.
• Conventional refractive assessments often fail to account for the instability caused by ocular surface disease, leading to inaccurate prescriptions, highlighting the need for improved assessment techniques.

Interpretation:

Addressing tear film instability is crucial for achieving stable and accurate refractive measurements, which can enhance patient outcomes and satisfaction by reducing variability in visual quality.

Limitations:

• The study does not provide specific treatment protocols for managing tear film instability, which limits practical application.
• Further research is needed to quantify the exact impact of tear film instability on different refractive assessment methods and to develop standardized treatment protocols.

Conclusion:

Prioritizing ocular surface health can significantly improve refractive measurement accuracy and patient satisfaction, reducing the likelihood of remakes and dissatisfaction, while ongoing research is essential to refine treatment strategies.