Which statement best distinguishes tapetal hyperreflectivity from hyporeflectivity?

• A. Hyperreflectivity indicates detachment; hyporeflectivity indicates degeneration
• B. Hyperreflectivity indicates retinal atrophy or degeneration; hyporeflectivity indicates detachment, choroidal effusion, inflammatory exudates, or neoplasia
• C. Hyperreflectivity occurs only in diabetic retinopathy; hyporeflectivity occurs in glaucoma
• D. There is no clinical difference between the two

Answer: (B)

The idea being tested is how changes in retinal tissue alter light reflectivity on tapetal imaging. When the retina undergoes atrophy or degeneration, the tissue architecture breaks down and more light is scattered back, producing hyperreflectivity. In contrast, areas where the retina is separated from the underlying layers or is occupied by fluid, inflammatory exudates, or mass/tumor tissue tend to reflect less light, appearing hyporeflective.

So, hyperreflectivity points to retinal atrophy or degeneration, while hyporeflectivity points to processes like detachment, choroidal effusion, inflammatory exudates, or neoplasia. This distinction helps differentiate degenerative changes from fluid-filled or space-occupying lesions on tapetal imaging.