Autosomal juvenile retinoschisis without foveal retinoschisis

Area of Science:

• Ophthalmology
• Genetics
• Retinal Diseases

Background:

• Hereditary retinoschisis is a genetic disorder causing retinal splitting.
• Foveal involvement is common in many forms of retinoschisis.
• Autosomal recessive inheritance patterns are known but less common.

Observation:

• A father and daughter with consanguineous parentage presented with hereditary retinoschisis.
• The father exhibited peripheral retinoschisis with retinal dendritic changes and good visual acuity.
• The daughter presented with peripheral retinoschisis, complicated by vitreous hemorrhage and retinal detachment, but no foveal changes.

Findings:

• Neither patient displayed foveal retinoschisis, a key distinguishing feature.
• Scotopic single-flash electroretinography revealed a unique pattern differentiating this condition.
• The clinical presentation and inheritance pattern suggest an autosomal recessive form of juvenile retinoschisis.

Implications:

• This case expands the understanding of retinoschisis phenotypes.
• The distinct electroretinogram pattern may improve diagnostic accuracy for this specific subtype.
• Recognition of this variant is crucial for genetic counseling and management of affected families.