40 Questions
What is the primary issue with monovision correction for presbyopia?
It deteriorates binocular VA with adds beyond +1.25
What is a characteristic of an ideal patient for multifocal correction?
Alternating SOT or XOT strabismus
What happens to binocular VA when adds exceed +1.25 in monovision correction?
It deteriorates
What is a limitation of monovision correction for presbyopia?
It has a poorer success rate compared to multifocals
What is the primary advantage of multifocal correction over monovision?
It maintains binocular vision even with high adds
What is the significance of +1.50 adds in monovision correction for presbyopia?
It is the maximum add power beyond which monovision correction tends to be less effective
What is the primary advantage of multifocal correction over monovision in terms of everyday tasks?
It provides better real visual performance in everyday tasks
What is the effect of exceeding +1.25 differential between eyes in monovision correction?
Inhibition of vision occurs, leading to deterioration of binocular VA
What is the ideal characteristic of a patient for monovision correction?
Alternating SOT or XOT strabismus
What is the significance of maintaining binocular vision in multifocal correction?
It is a key advantage of multifocal correction over monovision
What is the primary reason for inferior real visual performance on everyday tasks in monovision correction?
Inhibition of binocular vision
What is the primary advantage of multifocal correction over monovision correction in terms of visual performance?
Improved real visual performance on everyday tasks
What is the effect of exceeding +1.25 differential between eyes in terms of binocular vision in monovision correction?
Inhibition of binocular vision
What is the ideal characteristic of a patient for multifocal correction?
Presbyopia with no strabismus
What is the primary reason for the success rate of multifocal correction being better than monovision correction?
Maintains binocular vision even on adds beyond +1.25
What is the typical consequence when the differential between eyes exceeds +1.25 in monovision correction?
Binocular VA deteriorates
Why is multifocal correction more suitable for presbyopic patients with cylinders?
It maintains binocular vision even with adds beyond +1.25
What is the primary reason for the inferior visual performance of monovision correction in everyday tasks?
Lack of binocular vision
Why is an ideal multifocal correction patient not someone with a strongly dominant eye?
They may have alternating SOT or XOT strabismus
What is the significance of Pardhan and Gilchrist's 1990 study in the context of presbyopia correction?
It showed that adds beyond +1.50 tend not to work well in monovision correction
What is the primary advantage of multifocal contact lenses over monovision in presbyopia correction?
Better visual performance in everyday tasks
What is the effect of exceeding +1.25 differential between eyes in monovision correction?
Deterioration of binocular visual acuity
What is the characteristic of a patient ideal for multifocal correction?
Alternating strabismus
What is the significance of Pardhan and Gilchrist's 1990 study in presbyopia correction?
It showed the limitations of monovision correction for adds beyond +1.50
What is the primary reason for the inferior real visual performance of monovision correction?
Inability to maintain binocular vision
What is a common limitation of monovision correction in terms of everyday tasks?
It deteriorates binocular vision
What is the significance of monovision correction in presbyopic patients with cylindrical refractive errors?
It is not suitable for patients with cylindrical refractive errors
What can be inferred about a patient with a strongly dominant eye in terms of multifocal correction?
They are not ideal for multifocal correction
What can be concluded about the success rates of monovision and multifocal corrections?
Multifocal correction has a higher success rate than monovision correction
What is the significance of the Pardhan and Gilchrist 1990 study in the context of presbyopia correction?
It concluded that adds beyond +1.50 do not work well
What is a drawback of using SV DV CL with ready readers/near over-specs for presbyopia correction?
It is not as effective as multifocal CLs for everyday tasks
What is the primary advantage of Enhanced Monovision over traditional Monovision?
It is a combination of multifocal and monovision
Why is multifocal correction more effective for presbyopic patients with cylindrical refractive errors?
Because it maintains binocular vision
What happens when the differential between eyes exceeds +1.25 in monovision correction?
Binocular visual acuity deteriorates
What is a characteristic of a patient who is not ideal for multifocal correction?
Patient with a strongly dominant eye
What is a common limitation of SV DV CL with ready readers/near over-specs for presbyopia correction?
Inferior visual performance in everyday tasks
Why do multifocal CLs maintain binocular vision even on adds beyond +1.25?
Because they can summate the visual information from both eyes
What is the primary advantage of Enhanced Monovision over traditional Monovision?
It provides better real visual performance in everyday tasks
What can be inferred about a patient with alternating SOT or XOT strabismus in terms of multifocal correction?
They are ideal candidates for multifocal correction
What is the significance of the differential between eyes exceeding +1.25 in monovision correction?
It causes binocular vision to deteriorate
Explore the various options for correcting presbyopia, including monovision, multifocal contact lenses, and more. Learn about the advantages and disadvantages of each approach.
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