Transient Ocular Wavefront Data in Type 1 Diabetes Mellitus.

Area of Science:

• Ophthalmology
• Endocrinology
• Optics

Background:

• Acute type 1 diabetes mellitus can cause transient visual disturbances.
• Understanding these visual changes is crucial for patient management and monitoring.
• Wavefront aberrometry offers a precise method to quantify ocular optical alterations.

Observation:

• A 34-year-old male patient with type 1 diabetes mellitus underwent 130 days of ocular wavefront and blood glucose monitoring post-insulin initiation.
• Measurements included refraction, higher-order aberrations using a Hartmann-Shack sensor, and frequent blood glucose readings.
• Significant bilateral hyperopic shifts followed by myopic shifts were recorded, peaking around 15-18 days after insulin treatment began.

Findings:

• Equivalent sphere showed a 5 D hyperopic shift, then a 5 D myopic shift, stabilizing after 60 days.
• Higher-order aberrations, primarily spherical aberration, also exhibited transient changes correlating with refractive shifts.
• Cylinder values remained stable, while Zernike coefficient c12 for spherical aberration increased substantially before returning to baseline.

Implications:

• Wavefront aberrometry provides quantitative data on transient ocular optical changes during type 1 diabetes treatment.
• The observed transient refractive shifts suggest alterations in the crystalline lens, potentially its refractive index.
• Further research is needed to fully elucidate the mechanisms behind these lens-based optical changes in diabetes.