Quantitative Assessment of Visual Function in Japanese Patients With Lecithin-Cholesterol Acyltransferase Gene...

Area of Science:

• Ophthalmology
• Genetics
• Biochemistry

Background:

• Familial lecithin-cholesterol acyltransferase (LCAT) deficiency (FLD) and fish-eye disease (FED) are rare genetic disorders affecting lipid metabolism.
• These conditions lead to corneal opacities and can impact visual function.

Purpose of the Study:

• To compare visual function in patients with LCAT abnormalities (FLD and FED) against healthy controls.
• To assess parameters including visual acuity, corneal astigmatism, light scattering, and contrast sensitivity.

Main Methods:

• Retrospective, comparative case-control study.
• Inclusion of four patients with FLD or FED and four age/sex-matched healthy controls.
• Analysis of best-corrected visual acuity (BCVA), corneal astigmatism, forward light scattering, and contrast sensitivity.

Main Results:

• No significant differences in BCVA or corneal astigmatism between the LCAT group and controls.
• Significantly higher forward light scattering in the LCAT group (p = 0.007).
• Significantly lower contrast sensitivity in the LCAT group (p = 0.017).

Conclusions:

• Patients with FLD and FED experience subtle but significant visual functional impairment.
• Increased light scattering and decreased contrast sensitivity are key indicators of visual deficits in LCAT abnormalities.
• These findings highlight the importance of assessing beyond BCVA in patients with these rare conditions.