p.13
Symptoms of Color Blindness
How is black perceived by some people with color blindness?
As somewhat dark blue or green.
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Types of Color Blindness
Which types of color blindness are primarily inherited?
Red/green and blue color blindness.
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Types of Color Blindness
Can a person experience only one type of color blindness?
No, color blindness can present in various forms.
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Eye Anatomy and Function
What is the main difference between human vision and cat vision?
The concentration of rod and cone receptors in the retina.
p.15
Types of Color Blindness
What is tritanopia?
A rare form of blue-yellow color blindness.
p.5
Causes of Nearsightedness
What does it mean if you have difficulty seeing objects that are both near and far?
It’s possible that you’re both nearsighted and farsighted.
p.12
Eye Anatomy and Function
What is a notable feature of nocturnal animals' eyes?
They have large eyes with wider pupils and larger lenses.
p.15
Types of Color Blindness
What is protanomaly?
A condition where red cones in the eye have reduced sensitivity to red light.
p.15
Symptoms of Color Blindness
What visual effect does red-green color blindness have on landscapes?
It causes dull, brownish-yellow color landscapes.
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Symptoms of Nearsightedness
What is the primary difficulty faced by individuals with nearsightedness?
Seeing objects that are far away.
p.15
Types of Color Blindness
What is deuteranomaly?
A condition where green cones have reduced sensitivity to green light.
p.7
Symptoms of Farsightedness
What does farsightedness mean?
You can clearly see objects far away but have difficulty seeing closer objects clearly.
p.12
Color Blindness Overview
How does color blindness affect perception of colors?
Color blind individuals see fewer colors and less vibrancy.
p.14
Genetic Factors in Vision Conditions
Why do men suffer from color blindness more than women?
Because the characteristics are carried on the X chromosome.
p.8
Farsightedness (Hyperopia)
What happens to light once it reaches the retina?
It is passed to the optic nerve, which carries the information to the brain.
p.5
Symptoms of Farsightedness
What should you do to test for farsightedness?
Try reading a few pages in a book; if the words look blurry and you have a headache afterward, you may be farsighted.
p.8
Symptoms of Farsightedness
What are some symptoms associated with farsightedness?
Squinting, pain or burning around the eyes, and headaches when focusing on nearby objects.
p.6
Eye Anatomy and Function
What role does the retina play in vision?
It passes light to the optic nerve, which sends impulses to the brain.
p.6
Causes of Nearsightedness
What are some physical characteristics that can lead to nearsightedness?
A cornea that is too rounded or an eyeball that is too long.
p.7
Symptoms of Nearsightedness
What additional symptoms can occur due to nearsightedness?
Headaches, squinting, and eye fatigue or soreness.
p.15
Causes of Color Blindness
What happens when the blue cones in the eyes aren’t working?
It leads to blue-yellow color blindness, making it hard to distinguish colors like yellow, violet, blue, or green.
p.5
Symptoms of Nearsightedness
What should you do if you suspect you are nearsighted or farsighted?
Make an appointment with an optometrist for an eye exam.
p.6
Causes of Nearsightedness
What environmental factors may contribute to the development of myopia?
Use of computers, mobile phones, and electronic readers.
p.14
Genetic Factors in Vision Conditions
What is the primary cause of color blindness?
Color blindness develops mostly through genetics or at birth.
p.5
Symptoms of Nearsightedness
What is the first step to determine if you are nearsighted or farsighted?
Rest your eyes by looking away from screens or closing them for a few minutes.
p.5
Causes of Farsightedness
Can you be nearsighted or farsighted to varying degrees in each eye?
Yes, each eye can develop its own condition.
p.13
Eye Anatomy and Function
What is the role of the three wavelengths absorbed by the cones?
They combine to give us all the natural colors.
p.7
Symptoms of Nearsightedness
What difficulties might someone with nearsightedness experience?
Having difficulty reading signs while driving or seeing handwriting on a whiteboard.
p.8
Causes of Farsightedness
What are common physical characteristics of the eye in cases of farsightedness?
A flat cornea or a shorter than normal eyeball.
p.15
Symptoms of Color Blindness
What colors do landscapes appear to people with tritanopia?
Generally pink, red, black, white, or grey.
p.13
Symptoms of Color Blindness
How do people with red/green color blindness perceive colors?
They can see other colors but not red or green.
p.12
Color Blindness Overview
What does being color blind mean?
An inability to distinguish certain colors.
p.12
Eye Anatomy and Function
Why can humans detect colors better than cats?
Humans have a higher concentration of cone receptors.
p.6
Causes of Nearsightedness
What causes the refractive error in nearsightedness?
Light cannot be properly focused on the retina.
p.12
Color Blindness Overview
Can color blind people see objects clearly?
Yes, they can see objects with great sharpness and clarity.
p.7
Symptoms of Nearsightedness
What is the main symptom of nearsightedness?
Noticing blurriness when trying to see objects in the distance.
p.13
Types of Color Blindness
What is the most common type of color blindness?
Red/green color blindness.
p.12
Eye Anatomy and Function
How do large eyes benefit nocturnal animals?
They can collect more ambient light.
p.13
Eye Anatomy and Function
What wavelengths do the cones in the eye absorb?
Short (blue), medium (green), and long (red).
p.5
Symptoms of Nearsightedness
How can you test for nearsightedness?
Look at something in the distance from about 10 feet; if you can't see words and shapes clearly, you may be nearsighted.
p.13
Symptoms of Color Blindness
What confusion might arise for people with red/green color blindness?
They may confuse blue with purple due to the inability to see red.
p.12
Types of Color Blindness
What might color blind individuals see instead of red, green, or blue?
Different colors or shades, such as brown.
p.12
Genetic Factors in Vision Conditions
What is the prevalence of color blindness in males compared to females?
1 out of 12 males and 1 out of 20 females are affected.
p.13
Eye Anatomy and Function
How do rods and cones contribute to vision?
They are responsible for visual acuity and color contrast.
