What type of visual impairment is characterized by a deficit in night vision?

What type of visual impairment is characterized by a deficit in night vision?

• A. Microphthalmia
• B. Retinitis Pigmentosa
• C. Heminopsia
• D. Usher Syndrome

Answer: (B)

The type of visual impairment characterized by a deficit in night vision is primarily associated with Retinitis Pigmentosa. This condition is a genetic disorder that affects the retina's ability to respond to light, leading to progressive vision loss that often begins with difficulties in low-light situations, known as night blindness. Individuals with Retinitis Pigmentosa typically experience a gradual decrease in peripheral vision, which can eventually lead to tunnel vision and, in some cases, complete vision loss. The degeneration of photoreceptor cells, particularly the rods responsible for peripheral and night vision, is what predominantly causes this impairment. As a result, understanding Retinitis Pigmentosa is crucial for recognizing how night vision is significantly affected and the challenges it creates for those diagnosed with this condition.

The type of visual impairment characterized by a deficit in night vision is primarily associated with Retinitis Pigmentosa. This condition is a genetic disorder that affects the retina's ability to respond to light, leading to progressive vision loss that often begins with difficulties in low-light situations, known as night blindness. Individuals with Retinitis Pigmentosa typically experience a gradual decrease in peripheral vision, which can eventually lead to tunnel vision and, in some cases, complete vision loss.

The degeneration of photoreceptor cells, particularly the rods responsible for peripheral and night vision, is what predominantly causes this impairment. As a result, understanding Retinitis Pigmentosa is crucial for recognizing how night vision is significantly affected and the challenges it creates for those diagnosed with this condition.