Evaluation of early state of cyanopsia with subjective color settings immediately after cataract removal surgery

Kitakawa, Takaaki; Nakadomari, Satoshi; Kuriki, Ichiro; Kono, Kenji

doi:10.1364/josaa.26.001375

Cited by 13 publications

(13 citation statements)

References 44 publications

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“…This visual phenomenon has been reported in the initial period after cataract surgery, 18,22,24,25 with a tendency to resolve by 3 months postoperatively. 18,24 In a study of eyes having cataract surgery with the implantation of a clear or yellow IOL by Hayashi and Hayashi,18 no patient reported cyanopsia 3 months after surgery, suggesting that some form of neural adaptation or color constancy occurred. Kitakawa et al 24 evaluated cyanopsia using achromatic-point settings at several timepoints starting from the day before clear IOL implantation during cataract surgery.…”

Section: Discussionsupporting

confidence: 60%

“…18,24 In a study of eyes having cataract surgery with the implantation of a clear or yellow IOL by Hayashi and Hayashi,18 no patient reported cyanopsia 3 months after surgery, suggesting that some form of neural adaptation or color constancy occurred. Kitakawa et al 24 evaluated cyanopsia using achromatic-point settings at several timepoints starting from the day before clear IOL implantation during cataract surgery. They found that color appearance was recalibrated during cyanopsia by neural mechanisms with a time constant of several hours.…”

Section: Discussionmentioning

confidence: 99%

“…Yuan et al 22 asked the patient directly about the presence of this visual perception, and Hayashi and Hayashi 18 used a standardized questionnaire on glare symptoms and cyanopsia. In contrast, Kitakawa et al 24 used a more sophisticated procedure to evaluate cyanopsia consisting of the measurement of the chromaticity of a stimulus that the subject reports to appear achromatic after a measurement session using a 15-inch liquidcrystal display monitor. In the current study, a new procedure to evaluate cyanopsia was developed and tested clinically; it has some similarity to the method reported by Kitakawa et al 24 Specifically, the patients were asked to select which card appears as white from a series of cards with varying intensity of yellow.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Neutralization method for detecting the incidence of color perception changes after cataract surgery

Miyata¹

2015

Journal of Cataract and Refractive Surgery

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Section: Discussionsupporting

confidence: 60%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Neutralization method for detecting the incidence of color perception changes after cataract surgery

Miyata¹

2015

Journal of Cataract and Refractive Surgery

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“…This suggests that even within the 2 days before testing there was some recalibration of perceived focus, again because the subjective focus settings changed less than would be expected from the optical changes. A rapid initial adjustment has also been reported for color appearance changes after cataract surgery (Delahunt et al, 2004; Kitakawa et al, 2009). …”

Section: Discussionmentioning

confidence: 84%

Persistent biases in subjective image focus following cataract surgery

Parkosadze

Kalmakhelidze²,

Толмачева³

et al. 2013

Vision Research

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We explored the perception of image focus in patients with cataracts, and how this perception changed following cataract removal and implantation of an intraocular lens. Thirty-three patients with immature senile cataract and with normal retinal function were tested before surgery and 2 days after surgery, with 18 of the patients retested again at 2 months following surgery. The subjective focus of natural images was quantified in each session by varying the slope of the image amplitude spectra. At each time, short-term adaptation to the spectral slope was also determined by repeating the measurements after exposure to images with blurred or sharpened spectra. Despite pronounced acuity deficits, before surgery images appeared “best-focused” when they were only slightly blurred, consistent with a strong compensation for the acuity losses. Post-operatively, the image slopes that were judged “in focus” before surgery appeared too sharp. This bias remained strong at 2 months, and was independent of the rapid blur after-effects induced by viewing filtered images. The focus settings tended to renormalize more rapidly in patients with higher post-operative acuity, while acuity differences were unrelated to the magnitude of the short-term blur aftereffects. Our results suggest that subjective judgments of image focus are largely compensated as cataracts develop, but potentially through a very long-term form of adaptation that results in persistent biases after the cataract is removed.

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“…Following replacement of the lens with an intraocular lens (IOL), achromatic settings took months to return to near their pre-surgery settings. These slow drifts are distinct from the short-term normalization that also occurs when subjects are exposed to an adapting field, or when cataract patients are adapted to an external stimulus [24]. Delahunt et al isolated the long-term component by measuring the white settings while observers were dark-adapted, thus removing the adaptation to the immediate “extrinsic” light environment in order to reveal the underlying “intrinsic” white balance of the observer.…”

Section: Introductionmentioning

confidence: 99%

Adjusting to a sudden “aging” of the lens

Tregillus¹,

Werner²,

Webster³

2016

J. Opt. Soc. Am. A

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Color perception is known to remain largely stable across the lifespan despite the pronounced changes in sensitivity from factors such as the progressive brunescence of the lens. However, the mechanisms and timescales controlling these compensatory adjustments are still poorly understood. In a series of experiments, we tracked adaptation in observers after introducing a sudden change in lens density by having observers wear glasses with yellow filters that approximated the average spectral transmittance of a 70-year-old lens. Individuals were young adults and wore the glasses for 5 days for 8 hours per day while engaged in their normal activities. Achromatic settings were measured on a CRT before and after each daily exposure with the lenses on and off, and were preceded by 5 minutes of dark adaptation to control for short-term chromatic adaptation. During each day, there was a large shift in the white settings consistent with a partial compensation for the added lens density. However, there was little to no evidence of an after-image at the end of each daily session, and participants’ perceptual nulls were roughly aligned with the nulls for short-term chromatic adaptation, suggesting a rapid renormalization when the lenses were removed. The long-term drift was also extinguished by brief exposure to a white adapting field. The results point to distinct timescales and potentially distinct mechanisms compensating for changes in the chromatic sensitivity of the observer.

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Evaluation of early state of cyanopsia with subjective color settings immediately after cataract removal surgery

Cited by 13 publications

References 44 publications

Neutralization method for detecting the incidence of color perception changes after cataract surgery

Neutralization method for detecting the incidence of color perception changes after cataract surgery

Persistent biases in subjective image focus following cataract surgery

Adjusting to a sudden “aging” of the lens

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