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Microhemorrhagic maculopathy
Abstract:
Twenty subjects, 12 males and eight females aged 14 to 58 years, had a small monocular macular hemorrhage that was punctate, round, or bilobed and seemed to originate from the perifoveal capillary plexus. Although clinical study results failed to establish a common causal denominator, three of the 20 patients had a history of preceding increased venous pressure (Valsalva stress), three of nine subjects tested showed impaired blood platelet aggregation, and an additional four of 20 were taking medications known to impair platelet function both in vitro and in vivo. Macular microhemorrhages resolve spontaneously, and available data suggest that the syndrome is benign.
Insights
This study examined macular microhemorrhages in 20 patients. The findings suggest this condition is benign and resolves spontaneously, with no single common cause identified.
Area of Science:
- Ophthalmology
- Vascular Biology
Background:
- Macular microhemorrhages are small bleeds in the eye's macula.
- These hemorrhages appear punctate, round, or bilobed, originating from the perifoveal capillary plexus.
Purpose of the Study:
- To investigate the characteristics and potential causes of macular microhemorrhages.
- To determine the clinical course and prognosis of this condition.
Main Methods:
- Clinical observation of 20 subjects (12 males, 8 females) aged 14-58 years.
- Assessment of potential contributing factors including Valsalva stress and platelet function.
- Review of patient medication history for drugs affecting platelet function.
Main Results:
- No common causal denominator was established for the macular microhemorrhages.
- Three patients reported preceding increased venous pressure (Valsalva stress).
- Impaired platelet aggregation was observed in 3/9 subjects, and 4/20 used medications affecting platelet function.
Conclusions:
- Macular microhemorrhages are a benign condition that resolves spontaneously.
- Etiology is multifactorial, with potential contributions from venous pressure and platelet dysfunction.