Role of Visual Acuity, Stereoacuity, and Ocular Dominance in Monovision Patient Success

Intermediate optimization of vision with bilateral nonaspheric multifocal intraocular lens implantation

“…21 The lower CSF values may also be the result of residual refractive errors in the contralateral eye rather than intermediate optimization management itself. Unlike monovision for presbyopia, which produces a reduction in stereo acuity, 14 there was no reduction in stereo acuity with intermediate optimization compared with the best correction in our study. This result suggests that intermediate optimization has no significant effect on stereopsis.…”

“…We call this method intermediate optimization to distinguish it from traditional monovision for presbyopic correction, in which 1 eye is corrected for distance vision and the other eye is corrected for near vision by spectacle, contact lens, or corneal refractive surgery. [14][15][16] In the present study, we performed myopic intermediate optimization in patients who required good intermediate vision and who expected spectacle independence after correction. The myopic intermediate optimization was achieved by an intentional overcorrection of 1.00 D to induce À1.00 D of myopia in the nondominant eye to improve intermediate vision after implantation of the ReSTOR SA60D3 IOL.…”

“…To achieve good vision at all distances, including excellent vision at intermediate distance, 4 patients with intended intermediate optimization and 3 patients with unintended intermediate optimization had corneal refractive surgery to correct residual refractive errors. Before the secondary procedure, a trial frame refraction with loose lenses was performed in these patients to determine the appropriate correction for the contralateral eye for distance and the correction for the intermediate optimization eye for good vision at 50 cm or 60 cm, depending on the patient's requirements for intermediate working distance.Although intermediate optimization is not monovision, it shares some of the requirements for success in monovision patients 14,15. For instance, because it induces monocular defocus, it depends on monocular suppression for success.…”

Visual quality after monovision correction by laser in situ keratomileusis in presbyopic patients

“…7 Given that monovision success depends on interocular blur suppression, 8 individuals who do not have a strong sighting preference appear to have constant interocular blur suppression and therefore tend to have more success with monovision. 9,10 The dominant eye is usually corrected for distance vision and the nondominant eye for near vision. 1,2 This is because the dominant eye is better at performing spatial locomotor tasks, such as walking or driving.…”

Light-Adjustable Lens Complication

“…Some patients do not tolerate monovision owing to reduced contrast sensitivity and stereoacuity, as well as esophoric shifts. 10,11 During the time that the patient implanted with an LAL acclimated to monovision, he or she would have to wear protective UV glasses so the lens would not develop undesired optical changes from outside ambient light exposure.…”