Podcast
Questions and Answers
What is the ratio between the corrected and uncorrected image size known as?
What is the ratio between the corrected and uncorrected image size known as?
- Optical correction ratio
- Relative spectacle magnification (correct)
- Ameteropia conversion factor
- Absolute spectacle magnification
In axial ametropia, if the correcting lens is placed at the anterior focal point of the eye, what is the value of the relative spectacle magnification (RSM)?
In axial ametropia, if the correcting lens is placed at the anterior focal point of the eye, what is the value of the relative spectacle magnification (RSM)?
- Equal to unity (correct)
- Less than unity
- Depends on the type of ametropia
- Greater than unity
For axial myopia, if the correcting lens is worn nearer to the eye than the anterior focal point, what is the effect on the relative spectacle magnification?
For axial myopia, if the correcting lens is worn nearer to the eye than the anterior focal point, what is the effect on the relative spectacle magnification?
- It remains unchanged
- It decreases
- It increases (correct)
- It becomes negative
What effect do contact lenses have on axial myopia?
What effect do contact lenses have on axial myopia?
What does the relative spectacle magnification compare in clinical use?
What does the relative spectacle magnification compare in clinical use?
What is the term used for the ratio between the corrected and uncorrected image size?
What is the term used for the ratio between the corrected and uncorrected image size?
What happens to the relative spectacle magnification in refractive hypermetropia?
What happens to the relative spectacle magnification in refractive hypermetropia?
What is the relative spectacle magnification produced by aphakic spectacle correction approximately?
What is the relative spectacle magnification produced by aphakic spectacle correction approximately?
What effect does wearing correcting lenses nearer to the eye than the anterior focal point have on relative spectacle magnification in refractive ametropia?
What effect does wearing correcting lenses nearer to the eye than the anterior focal point have on relative spectacle magnification in refractive ametropia?
How does the image magnification affect the perception of distance in aphakic spectacle wearers?
How does the image magnification affect the perception of distance in aphakic spectacle wearers?
What does reducing the Relative Spectacle Magnification (RSM) to 1.1 or 1.0 overcome?
What does reducing the Relative Spectacle Magnification (RSM) to 1.1 or 1.0 overcome?
What effect does spectacle correction in aphakia have on standard tests of visual acuity?
What effect does spectacle correction in aphakia have on standard tests of visual acuity?
What happens to the image size in refractive myopia?
What happens to the image size in refractive myopia?
Where are spectacles usually worn in front of the cornea for aphakic patients?
Where are spectacles usually worn in front of the cornea for aphakic patients?
What is the typical relative spectacle magnification for contact lens correction in aphakia?
What is the typical relative spectacle magnification for contact lens correction in aphakia?
What does refractive ametropia refer to?
What does refractive ametropia refer to?
