Lesson 595 of 1524
Vision and Optical Instruments
In myopia and hyperopia, the corrective lenses produce images at a distance that the person can see clearly—the far point and near point, respectively
Practice this chapterIn myopia and hyperopia, the corrective lenses produce images at a distance that the person can see clearly—the far point and near point, respectively The eye produces a real image on the retina by adjusting its focal length and power in a process called accommodation
Nearsightedness, or myopia, is the inability to see distant objects and is corrected with a diverging lens to reduce power Farsightedness, or hyperopia, is the inability to see close objects and is corrected with a converging lens to increase power
myopia — a visual defect in which distant objects appear blurred because their images are focused in front of the retina rather than being focused on the retina. nearsightedness — another term for myopia, a visual defect in which distant objects appear blurred because their images are focused in front of the retina rather than being focused on the retina. near point — the point nearest the eye at which an object is accurately focused on the retina at full accommodation. accommodation — the ability of the eye to adjust its focal length is known as accommodation.
Worked example
What does “myopia” mean in Vision and Optical Instruments?
- 1Use the wording this chapter gives for myopia.
- 2The book says: a visual defect in which distant objects appear blurred because their images are focused in front of the retina rather than being focused on the retina.
- 3Do not use the meaning of nearsightedness. That term means another term for myopia, a visual defect in which distant objects appear blurred because their images are focused in front of the retina rather than being focused on the retina.
Result: a visual defect in which distant objects appear blurred because their images are focused in front of the retina rather than being focused on the retina
Why. That is the meaning this chapter gives for myopia.
Do not swap myopia and nearsightedness. myopia means a visual defect in which distant objects appear blurred because their images are focused in front of the retina rather than being focused on the retina. nearsightedness means another term for myopia, a visual defect in which distant objects appear blurred because their images are focused in front of the retina rather than being focused on the retina.
Practice margin
This chapter
A fresh set from this chapter only. Choose 10 or 20. Multiple choice and fill-in, with no repeat inside the set.