Can High Myopia Cause Enlarged Blind Spots and Visual Shadows?
Does high myopia cause an expansion of blind spots? + Visual shadows in dimly lit areas? Hello Doctor, I have a few questions I would like to ask. 1. I noticed in the past year or two that when I close one eye, I can see a dark area near my blind spot in both eyes. Previously, ...
Dr. Gao Pilin Reply:
Hello: 1. High myopia and the expansion of the blind spot associated with high myopia (1000 and 1200 diopters) can indeed lead to retinal degeneration, which may affect the structures surrounding the optic nerve, resulting in an enlarged blind spot. Although your OCT scan shows...[Read More] Can High Myopia Cause Enlarged Blind Spots and Visual Shadows?
Understanding Retinitis Pigmentosa and Night Blindness: Key Insights
Retinal pigment, night blindness? 1. I would like to ask the doctor, if I am already 50 years old and have not yet shown symptoms of retinitis pigmentosa, is there still a possibility of developing the condition after the age of 50? Most information online states that symptoms ty...
Dr. Gao Pilin Reply:
Hello, Miss Lin: Difficulty seeing at night is not necessarily night blindness; it may simply be due to refractive error, which can be corrected with appropriate glasses. Night blindness, or nyctalopia, refers to the inability to see nearby objects in low-light conditions, such a...[Read More] Understanding Retinitis Pigmentosa and Night Blindness: Key Insights
Understanding Night Blindness: Common Questions and Clarifications
The definition of night blindness? 1. In a completely dark room with no light, it is not possible to see anything, including the general shapes of objects. Vision requires light to reflect off objects and reach the retina. Night blindness, or nyctalopia, is defined as difficulty ...
Dr. Gao Pilin Reply:
Hello, Ms. Wang: "Dark adaptation time" is determined by the rod cells; "poor dark adaptation" refers to an extended adaptation time in lower light conditions, to the point where one cannot see their hand in front of them, leading to what is known as "nig...[Read More] Understanding Night Blindness: Common Questions and Clarifications
Understanding Night Blindness: Symptoms and Diagnosis Explained
Nyctalopia The term "not being able to see after five minutes in the dark" refers to complete darkness, meaning there is no light at all. However, it is important to note that some individuals may have difficulty seeing in low-light conditions, which can be a sign of ni...
Dr. Gao Pilin Reply:
Hello, Xiao Yu: Based on your description and symptoms, there is a high likelihood that you have night blindness. To confirm the diagnosis, you should visit a large hospital's ophthalmology department for an examination of the retina, visual field, and electroretinography.[Read More] Understanding Night Blindness: Symptoms and Diagnosis Explained