Multicenter review of impression-based scleral devices

Area of Science:

• Ophthalmology
• Optometry
• Contact Lens Technology

Background:

• Anterior segment diseases often present complex challenges for vision management.
• Standard scleral lenses may not be suitable for all patients with severe ocular surface conditions or corneal irregularities.
• Impression-based scleral devices represent an alternative approach for managing challenging cases.

Purpose of the Study:

• To evaluate the outcomes of impression-based scleral devices in managing anterior segment diseases.
• To assess the efficacy and patient success rates with this specialized lens type.

Main Methods:

• A retrospective chart review was conducted on patients fitted with impression-based scleral devices between January 2013 and June 2019.
• Data collected included patient demographics, indications for use, visual and physiological outcomes, fitting process details, and device survival.
• Patients with prior unsuccessful attempts with standard scleral lenses were specifically analyzed.

Main Results:

• Forty-four patients (70 eyes) were included, with primary indications being corneal irregularity and ocular surface disease.
• A significant improvement in visual acuity was observed with impression-based devices compared to habitual correction (p < 0.001).
• Successful fitting, including haptic alignment (74%) and limbal clearance (83%), was achieved in a majority of cases, with low discontinuation rates due to complications.

Conclusions:

• Impression-based scleral devices provide a viable solution for patients with complex eye diseases who have not succeeded with conventional scleral lenses.
• These devices can lead to significant visual and therapeutic success in challenging ophthalmic cases.