Dysfunctional lens syndrome

Area of Science:

• Ophthalmology
• Optometry
• Vision Science

Background:

• Dysfunctional lens syndrome (DLS) is a condition characterized by poor visual quality due to optical imperfections of the crystalline lens.
• It can manifest as visual discomfort and reduced visual acuity despite the absence of significant cataracts.

Observation:

• A 45-year-old male patient presented with poor visual quality, with uncorrected visual acuity of 20/40 and best spectacle-corrected acuity of 20/25.
• Pre- and post-operative aberrometry revealed significant reductions in total higher-order aberrations (HOAs) and coma, particularly within the internal optics.

Findings:

• Pre-operative root-mean-square (RMS) of total higher-order aberrations was 0.350 μ, decreasing to 0.257 μ post-operatively.
• Pre-operative internal coma was 0.274 μ, significantly reduced to 0.131 μ post-operatively, indicating improved lens function.

Implications:

• HOAs originating from the crystalline lens can significantly impact visual quality when not adequately compensated by the cornea.
• These findings highlight the importance of evaluating internal lens optics in patients experiencing unexplained visual discomfort.
• Understanding DLS is crucial for accurate diagnosis and management of visual disturbances not attributable to refractive error or cataracts.