Sustaining Comfort in Scleral Lens Wear: Key Insights for Practice

Overview

Scleral lens comfort is often compromised by poor lens fit and ocular surface inflammation. Proper alignment of the lens periphery and proactive management of ocular surface conditions are essential to maintain comfortable and healthy scleral lens wear.

Background

Scleral lenses are increasingly used to manage complex refractive and ocular conditions, but patient dissatisfaction often arises from blurry vision and discomfort. These issues commonly stem from misalignment of the lens landing zones, causing decentration and residual astigmatism. Additionally, ocular surface inflammation, particularly in keratoconus patients who have a higher prevalence of atopy and immune activation, can exacerbate discomfort and lead to secondary complications such as dry eye and meibomian gland dysfunction. Effective management requires careful fitting, inflammation control, and patient communication.

Data Highlights

Key clinical observations include the relationship between lens fit and vision clarity, the impact of conjunctival and limbal alignment on lens centration, and the role of ocular surface inflammation in scleral lens discomfort. Tools such as the Ocular Surface Disease Index and Contact Lens Discomfort Index facilitate monitoring of patient comfort over time.

Key Findings

• Blurry vision in scleral lens wear is often due to poor peripheral lens fit causing decentration and residual astigmatism.
• Misalignment of conjunctival-scleral and limbal landing zones can lead to flat or steep lens edges, resulting in tear film debris accumulation or limbal tissue impingement.
• Adding toric peripheral curves improves lens centration and alignment with the ocular surface.
• Keratoconus patients are prone to ocular allergy and inflammation due to upregulated immune cells in their tear film, increasing the risk of chronic conjunctival inflammation and dry eye disease.
• Proactive management of conjunctival and lid inflammation with topical anti-inflammatory medications and advanced therapies like meibomian gland evacuation or intense pulsed light therapy can sustain lens comfort.
• Utilizing patient questionnaires and effective communication enhances understanding of lens-related comfort and adherence to therapy.

Clinical Implications

Clinicians should prioritize optimal scleral lens fitting with attention to peripheral alignment to prevent decentration and visual disturbances. Early identification and treatment of ocular surface inflammation, especially in keratoconus patients, are critical to maintaining lens comfort. Employing validated symptom questionnaires and maintaining open patient communication can guide personalized management strategies.

Conclusion

Sustaining scleral lens comfort requires a multifaceted approach involving precise lens fitting, vigilant management of ocular surface inflammation, and ongoing patient engagement. These strategies collectively support long-term successful scleral lens wear.

References

1. Fadel D. 2019 -- Scleral Lens Issues and Complications Related to a Non-optimal Fitting Relationship Between the Lens and Ocular Surface
2. Berta A et al. 2018 -- New international consensus statement about dry eye (TFOS DEWS II)
3. Wheeler J et al. 2012 -- The Genetics of Keratoconus: A Review
4. D’Souza S et al. 2021 -- Keratoconus patients exhibit a distinct ocular surface immune cell and inflammatory profile
5. Dartt DA, Masli S. 2014 -- Conjunctival epithelial and goblet cell function in chronic inflammation and ocular allergic inflammation
6. Arita R et al. 2017 -- Meibomian Gland Dysfunction and Contact Lens Discomfort