Distinct differences in anterior chamber configuration and peripheral aberrations in negative dysphotopsia

Vught, Luc van; Luyten, Gregorius P M; Beenakker, Jan-Willem M.

doi:10.1097/j.jcrs.0000000000000206

Cited by 20 publications

(34 citation statements)

References 32 publications

(2 reference statements)

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“…This can cause a shadow-like region that goes away as the pupil opens up. This is consistent with clinical reports, but there is still no clear consensus about the cause [6][7][8][9]. The dark shadow evaluations indicate that the limit of the visual field may be reduced for the pseudophakic eye due to vignetting, which is very unexpected after 50 years of IOL usage with nobody mentioning it, though "far peripheral vision" seems to have never been explored in detail, even for the phakic eye [1].…”

Section: Introductionsupporting

confidence: 58%

Scaling the Retinal Image of the Wide-Angle Eye Using the Nodal Point

Simpson¹

2021

Photonics

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Angles subtended at the second nodal point of the eye (NP2) are approximately the same as input visual angles over a very large angular range, despite the nodal point being a paraxial lens property. Raytracing using an average pseudophakic eye showed that the angular nodal point criterion was only valid up to about 10°, and that the linear relationship was due instead to the cornea and lens initially creating chief ray angles at the exit pupil that are about 0.83 times input values for this particular eye, and then by the retina curving around to meet the rays in a manner that compensates for increasing angle. This linear relationship is then also maintained when retinal intersections are calculated relative to other axial points, with angles rescaled approximately using the equation R/(R + delta), where delta is the axial distance from the center of a spherical retina of radius R. Angles at NP2 approximately match the input angles, but the terminology is misleading because this is not a paraxial property of the eye. Chief rays are used with finite raytracing to determine the actual behavior.

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Section: Introductionsupporting

confidence: 58%

Scaling the Retinal Image of the Wide-Angle Eye Using the Nodal Point

Simpson¹

2021

Photonics

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“…Based on the reported clinical differences between eyes with and without ND, 2 eye models were designed, 1 with a typical anatomy for patients with ND and 1 with a typical anatomy for pseudophakic controls (Figure 1). 7,18 The anatomical aspects of these eye models were derived from clinical measurements obtained from 37 patients with ND and 26 pseudophakic controls who participated in the ESCRS vRESPOND study (CCMO registry number: NL58358.058.16). Before participation, all subjects provided written informed consent.…”

Section: Methodsmentioning

confidence: 99%

“…Finally, the pupil center of the ND model was moved 0.17 mm temporally about the visual axis, while the pupil center of the control model was shifted 0.01 mm nasally. 7 As ND has been reported to occur with a wide variety of posterior chamber IOL designs, each eye model was analyzed with 4 different IOL designs (Figure 1, C). 7,8 The first design consisted of a simple biconvex IOL design, similar to those used in earlier ray-tracing studies.…”

Section: Model Designmentioning

confidence: 99%

“…7 As ND has been reported to occur with a wide variety of posterior chamber IOL designs, each eye model was analyzed with 4 different IOL designs (Figure 1, C). 7,8 The first design consisted of a simple biconvex IOL design, similar to those used in earlier ray-tracing studies. 2,13,16 In reality, however, IOLs often have a more complex design.…”

Section: Model Designmentioning

confidence: 99%

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Effect of anatomical differences and intraocular lens design on negative dysphotopsia

Vught

Que

Luyten

et al. 2022

J Cataract Refract Surg

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“…Negative dysphotopsia 38,41 Most commonly Secondary to the capsule overlying the nasal edge of the optic of the implant. Symptoms typically resolve with time, but may take 6 months or longer.…”

Section: Complication Symptom(s) Treatmentmentioning

confidence: 99%

Refractive Lens Exchange Candidate Selection

Stein¹,

Stein²

2021

CRO (Clinical &Amp; Refractive Optometry) Journal

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Refractive lens exchange (RLE) is a popular procedure in presbyopic patients who desire the full range of vision. Advances in IOL designs can allow patients to achieve distance, intermediate, and near vision without the need for glasses. Seeing a smart phone or computer without correction is a significant lifestyle benefit. Patient satisfaction has been very high with both multifocal and extended depth of focus implants. Candidates for RLE may have any refractive error and are usually presbyopic and desire the full range of vision. Presbyopic low hyperopes are very motivated, as they never wore distance glasses when they were younger, started with readers in their early 40s, and now need glasses for both distance and near activities. Most hyperopic, myopic, and astigmatic refractive errors can be treated with a RLE. Patients should have a normal cornea, macula, optic nerve, and peripheral retina. Diagnostic testing should demonstrate a normal corneal topography without evidence of irregular astigmatism. CE Notification: This article is available as a COPE accredited CE course. You may take this course for 1-hour credit. Read the article and take the qualifying test to earn your credit. Click here to Enroll (https://www.crojournal.com/refractive-lens-exchange-candidate-selection)

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Distinct differences in anterior chamber configuration and peripheral aberrations in negative dysphotopsia

Cited by 20 publications

References 32 publications

Scaling the Retinal Image of the Wide-Angle Eye Using the Nodal Point

Scaling the Retinal Image of the Wide-Angle Eye Using the Nodal Point

Effect of anatomical differences and intraocular lens design on negative dysphotopsia

Refractive Lens Exchange Candidate Selection

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