Foveal crack sign and macular pattern dystrophy

Area of Science:

• Ophthalmology
• Retinal Imaging
• Macular Diseases

Background:

• Macular pattern dystrophy (MPD) is a group of retinal disorders affecting the macula.
• The foveal crack sign (FCS) and hyperreflective foci (HRF) are OCT findings observed in various macular conditions.
• The clinical significance of FCS in MPD, particularly its association with macular hole formation and HRF, requires further investigation.

Purpose of the Study:

• To investigate the progression of the foveal crack sign (FCS) to macular holes in eyes with macular pattern dystrophy (MPD).
• To determine if FCS occurs in conjunction with hyperreflective foci (HRF) that do not meet the criteria for FCS.
• To explore the relationship between FCS, HRF, and macular hole development in MPD.

Main Methods:

• Retrospective chart review of 56 eyes from 32 patients diagnosed with MPD.
• Analysis of spectral domain optical coherence tomographs (SD-OCTs) to identify FCS and HRF.
• Comparison of macular hole development in MPD eyes with and without FCS.

Main Results:

• FCS was identified in 8 eyes (from 6 patients) with MPD.
• One eye with MPD and FCS progressed to a full-thickness macular hole.
• No significant difference in macular hole development was observed between MPD eyes with and without FCS (p=0.1429).
• A significant association was found between the presence of HRF and FCS in MPD eyes (p=0.0063).

Conclusions:

• The study did not find a significant link between FCS and the development of macular holes in MPD.
• A significant association between HRF and FCS suggests a potential common underlying pathophysiology or a spectrum of degeneration.
• Further research is warranted to elucidate the relationship between FCS and HRF and their implications in different clinical settings.