The central visual field might mediate night vision

Moshkovitz, Avital; Lev, Maria; Polat, Uri

doi:10.1167/jov.22.14.4262

Cited by 1 publication

(4 citation statements)

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“…In the study, crowding under low contrast was measured. The study's results indicated that low-contrast stimuli exhibited a reduced crowding effect at the participant's contrast threshold compared with slightly higher contrast stimuli 47 . This reduction in the crowding effect due to low contrast at the threshold was also observed in previous research, thus corroborating our results 12 , 48 , 49 .…”

Section: Discussionmentioning

confidence: 75%

Section: Discussionmentioning

confidence: 99%

“…In a separate research study conducted in our laboratory Moshkovitz 47 , we performed crowding experiments on individuals with typical visual development under scotopic luminance. We employed a distinct experimental methodology that measured sensitivity 47 . Despite utilizing differing methodologies to gauge crowding effects, our results remained remarkably congruent with those observed under photopic and scotopic luminance.…”

Section: Discussionmentioning

confidence: 99%

“…Subsequently, the study mentioned above 47 thoroughly investigated similar conditions that could clarify the absence of crowding in low-light scenarios, specifically low-contrast crowding measurements. In the study, crowding under low contrast was measured.…”

Section: Discussionmentioning

confidence: 99%

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Crowding under scotopic and photopic vision in albino and normal-sighted participants

Moshkovitz,

Lev,

Polat

2024

Sci Rep

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Crowding is a phenomenon in which the ability to recognize an object in a clutter deteriorates. It is, therefore, a fundamental aspect of object recognition and crucial in deciphering resolution. For visually impaired individuals, deficiency in crowding has a tremendous effect on vision and may reflect and predict the amount of deterioration in vision. It is well established that albinos suffer much more from crowding than normally sighted individuals under daylight luminance conditions. However, to our knowledge, this study is the first to investigate crowding in albino participants under low light conditions. In this study, we explored the crowding effect in a group of albino participants (n = 9) and a control group of normally sighted participants (n = 9). Crowding was conducted under daylight (photopic vision) and low light (scotopic vision). We measured the visual acuity threshold under crowding in three-letter spacing (0.5, 1, and 1.5) and compared it to a single target. Results indicate that albino participants experienced stronger crowding than the control under the photopic condition, while crowding under the scotopic condition was apparent in the albino but abolished for the control group. These findings highlight the importance of considering luminance when discussing the visually impaired population in general. In particular, it suggests that crowding in albinism is based on a peripheral-like mechanism and may indicate a cessation in visual development.

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