Front

What happens to the eyes when using a phone in the dark?

Back

Using a phone in the dark can potentially harm your eyesight.

Front

What are the two types of photoreceptor cells in the human eye?

Back

The two types of photoreceptor cells are cone cells and rod cells.

Front

What are the three types of cone cells and their sensitivity?

Back

S-type is sensitive to blue light, M-type to green light, and L-type to red light.

Front

How do photoreceptor cells convert light into electrical signals?

Back

Photoreceptor cells change the structure of photopigments when stimulated by light, generating bioelectric signals.

Front

What role do retinal pigment epithelial cells play?

Back

They restore photopigments and clear waste produced by photoreceptor cells.

Front

Why do photoreceptor cells need a good blood supply?

Back

They require a high blood supply and oxygen to maintain their metabolic activities.

Front

What can happen if photoreceptor cells are damaged?

Back

Damage to these cells can disrupt physiological processes and affect vision.

Front

What is the role of retinal pigment epithelium cells?

Back

They restore visual proteins and clear waste from photoreceptor cells.

Front

What happens if photoreceptor or pigment epithelial cells are damaged?

Back

It hinders physiological circulation and affects visual function.

Front

What are the two types of light damage to tissues?

Back

1. Thermal damage 2. Photochemical damage.