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Refractive errors in patients with fundus flavimaculatus

D S Doka, G A Fishman, R J Anderson

The British Journal of Ophthalmology

|April 1, 1982

Summary

Patients with fundus flavimaculatus and macular atrophy exhibit significantly higher rates of myopia and astigmatism. This study highlights a strong association between this retinal condition and refractive errors, impacting visual health.

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Area of Science:

Ophthalmology
Genetics
Retinal Diseases

Background:

Fundus flavimaculatus is a rare inherited retinal disorder characterized by yellowish-white flecks in the macula and periphery.
Macular involvement in fundus flavimaculatus can lead to progressive visual impairment due to atrophic changes.
The impact of fundus flavimaculatus on refractive error, particularly myopia and astigmatism, is not well-established.

Purpose of the Study:

To investigate the prevalence and severity of refractive errors in patients diagnosed with fundus flavimaculatus.
To compare the refractive error profiles of patients with fundus flavimaculatus to a normal population.
To determine the association between atrophic macular lesions and refractive error characteristics in this cohort.

Main Methods:

Retrospective analysis of refractive error data from 59 patients (118 eyes) with fundus flavimaculatus and atrophic macular lesions.
Spherical equivalent and astigmatic refractive errors were measured and compared to normative data.
Statistical analysis was performed to assess the distribution and significance of observed refractive errors.

Main Results:

A significantly higher prevalence of myopia was observed in the patient group (76%) compared to the normal population (12%).
The mean spherical equivalent refractive error was -1.12 dioptres, indicating a 2.12 dioptre shift towards myopia compared to normal.
Astigmatic refractive errors (> +0.5 dioptres) were found in 42% of patients, substantially higher than the 18.6% in the normal population.

Conclusions:

Fundus flavimaculatus with macular atrophy is strongly associated with increased myopia and astigmatism.
These findings suggest a potential link between the genetic defect causing fundus flavimaculatus and ocular refractive development.
Ophthalmologists should consider comprehensive refractive error assessment in patients diagnosed with fundus flavimaculatus.

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