ODP: Spectacle Final Exam Questions
and Answers Already Passed
What is the primary function of the cornea in the eye?
✔✔The cornea helps to focus light onto the retina.
What is the role of the lens in vision?
✔✔The lens adjusts its shape to help focus light on the retina for clear vision.
What is myopia, and how is it corrected?
✔✔Myopia, or nearsightedness, occurs when distant objects appear blurry. It is corrected with
concave lenses.
What is hyperopia, and what type of lens is used for correction?
✔✔Hyperopia, or farsightedness, occurs when close objects appear blurry. It is corrected with
convex lenses.
What is astigmatism, and how does it affect vision?
1
,✔✔Astigmatism is caused by an irregular curvature of the cornea, leading to distorted or blurred
vision at any distance.
What is the function of the retina?
✔✔The retina converts light into electrical signals that are sent to the brain for visual processing.
What are photoreceptors, and what are their two main types?
✔✔Photoreceptors are cells in the retina that detect light. The two main types are rods and cones.
What is the difference between rods and cones?
✔✔Rods are responsible for vision in low light, while cones are responsible for color vision and
detail in brighter light.
What does the term "visual acuity" refer to?
✔✔Visual acuity refers to the sharpness or clarity of vision.
What is the purpose of an optical prescription?
2
, ✔✔An optical prescription provides specific measurements and requirements for corrective
lenses.
What is the significance of the pupil in vision?
✔✔The pupil regulates the amount of light entering the eye by changing its size.
What is a cataract, and how does it affect vision?
✔✔A cataract is a clouding of the lens that can lead to blurry vision and difficulty seeing in low
light.
What are some common signs of eye strain?
✔✔Common signs of eye strain include headaches, blurred vision, and difficulty focusing.
What is the purpose of an eye exam?
✔✔An eye exam assesses vision and eye health to identify any issues or conditions.
How does age-related macular degeneration (AMD) affect vision?
3
and Answers Already Passed
What is the primary function of the cornea in the eye?
✔✔The cornea helps to focus light onto the retina.
What is the role of the lens in vision?
✔✔The lens adjusts its shape to help focus light on the retina for clear vision.
What is myopia, and how is it corrected?
✔✔Myopia, or nearsightedness, occurs when distant objects appear blurry. It is corrected with
concave lenses.
What is hyperopia, and what type of lens is used for correction?
✔✔Hyperopia, or farsightedness, occurs when close objects appear blurry. It is corrected with
convex lenses.
What is astigmatism, and how does it affect vision?
1
,✔✔Astigmatism is caused by an irregular curvature of the cornea, leading to distorted or blurred
vision at any distance.
What is the function of the retina?
✔✔The retina converts light into electrical signals that are sent to the brain for visual processing.
What are photoreceptors, and what are their two main types?
✔✔Photoreceptors are cells in the retina that detect light. The two main types are rods and cones.
What is the difference between rods and cones?
✔✔Rods are responsible for vision in low light, while cones are responsible for color vision and
detail in brighter light.
What does the term "visual acuity" refer to?
✔✔Visual acuity refers to the sharpness or clarity of vision.
What is the purpose of an optical prescription?
2
, ✔✔An optical prescription provides specific measurements and requirements for corrective
lenses.
What is the significance of the pupil in vision?
✔✔The pupil regulates the amount of light entering the eye by changing its size.
What is a cataract, and how does it affect vision?
✔✔A cataract is a clouding of the lens that can lead to blurry vision and difficulty seeing in low
light.
What are some common signs of eye strain?
✔✔Common signs of eye strain include headaches, blurred vision, and difficulty focusing.
What is the purpose of an eye exam?
✔✔An eye exam assesses vision and eye health to identify any issues or conditions.
How does age-related macular degeneration (AMD) affect vision?
3
