Choroid and optical defocus

2020 ◽  
Vol 136 (4) ◽  
pp. 124
Author(s):  
E.P. Tarutta ◽  
S.V. Milash ◽  
G.A. Markosyan ◽  
N.A. Tarasova
Keyword(s):  
Optical Defocus

Optimum spatial filter for optical defocus sensing

1981 ◽  
Vol 64 (9) ◽  
pp. 113-120
Author(s):  
Kohji Takemura ◽  
Suteo Tsutsumi
Keyword(s):  
Spatial Filter ◽  
Optical Defocus

Frequency-Doubling Technology Perimetry and Optical Defocus

2003 ◽  
Vol 44 (9) ◽  
pp. 4147 ◽  
Author(s):  
Andrew John Anderson ◽  
Chris A. Johnson
Keyword(s):  
Frequency Doubling ◽  
Frequency Doubling Technology ◽  
Optical Defocus

scholarly journals Evaluation of an Optical Defocus Treatment for Myopia Progression Among Schoolchildren During the COVID-19 Pandemic

2022 ◽  
Vol 5 (1) ◽  
pp. e2143781
Author(s):  
Kai Yip Choi ◽  
Rachel Ka Man Chun ◽  
Wing Chun Tang ◽  
Chi Ho To ◽  
Carly Siu-yin Lam ◽  
...  
Keyword(s):  
Myopia Progression ◽  
Optical Defocus

scholarly journals Short term optical defocus perturbs normal developmental shifts in retina/RPE protein abundance

2018 ◽  
Vol 18 (1) ◽  
Author(s):  
Nina Riddell ◽  
Pierre Faou ◽  
Sheila G. Crewther
Keyword(s):  
Protein Abundance ◽  
Short Term ◽  
Optical Defocus

scholarly journals The role of Peripheral Vision in the Flashed Face Distortion Effect

Perception ◽  
2018 ◽  
Vol 48 (1) ◽  
pp. 93-101
Author(s):  
Jamie Bowden ◽  
David Whitaker ◽  
Matt J. Dunn
Keyword(s):  
Visual Acuity ◽  
Analogue Scale ◽  
Peripheral Vision ◽  
Crowding Effect ◽  
Visual Periphery ◽  
Peripheral Location ◽  
Distortion Effect ◽  
Optical Defocus ◽  
Visual Crowding

The flashed face distortion effect is a phenomenon whereby images of faces, presented at 4–5 Hz in the visual periphery, appear distorted. It has been hypothesized that the effect is driven by cortical, rather than retinal, components. Here, we investigated the role of peripheral viewing on the effect. Normally sighted participants viewed the stimulus peripherally, centrally, and centrally with a blurring lens (to match visual acuity in the peripheral location). Participants rated the level of distortion using a Visual Analogue Scale. Although optical defocus did have a significant effect on distortion ratings, peripheral viewing had a much greater effect, despite matched visual acuity. We suggest three potential mechanisms for this finding: increased positional uncertainty in the periphery, reduced deployment of attention to the visual periphery, or the visual crowding effect.

Optimum spatial filter for optical defocus sensing

1981 ◽  
Vol 64 (9) ◽  
pp. 113-120
Author(s):  
Kohji Takemura ◽  
Suteo Tsutsumi
Keyword(s):  
Spatial Filter ◽  
Optical Defocus

scholarly journals The role of optical defocus in regulating refractive development in infant monkeys

1999 ◽  
Vol 39 (8) ◽  
pp. 1415-1435 ◽  
Author(s):  
Earl L Smith III ◽  
Li-Fang Hung
Keyword(s):  
Refractive Development ◽  
Optical Defocus

Predicting the effects of optical defocus on human contrast sensitivity

1998 ◽  
Vol 15 (9) ◽  
pp. 2536 ◽  
Author(s):  
David A. Atchison ◽  
Russell L. Woods ◽  
Arthur Bradley
Keyword(s):  
Contrast Sensitivity ◽  
Optical Defocus

scholarly journals Author response: The perception and misperception of optical defocus, shading, and shape

2019 ◽  
Author(s):  
Scott WJ Mooney ◽  
Phillip J Marlow ◽  
Barton L Anderson
Keyword(s):  
Author Response ◽  
Optical Defocus

scholarly journals The Effect of Optical Defocus on the Choroidal Thickness: A Review

2021 ◽  
Vol 15 (1) ◽  
pp. 283-287
Author(s):  
Sulaiman Aldakhil
Keyword(s):  
Refractive Error ◽  
Choroidal Thickness ◽  
Visual Development ◽  
Refractive Errors ◽  
Primary Role ◽  
Retinal Position ◽  
Related Factors ◽  
Conflicting Evidence ◽  
Optical Defocus ◽  
The Relationship

The choroid is a heavily vascularized tissue located between the retina and sclera and plays a primary role in ocular metabolism. It has recently been suggested that the choroid has the ability to change its thickness and secretion of growth factors. This may play an important role during visual development by adjusting retinal position during growth to support emmetropisation; however, the mechanism by which changes in choroidal thickness (ChT) occur is unclear. This relationship becomes an interesting topic in the clinical field, although conflicting evidence found that these changes in the choroidal thickness may not be associated with the development of refractive errors. Many reports have investigated the changes in the choroid and related factors that affect the ChT. Thus, this review will summarize the current literature related to choroidal thickness in different refractive error groups, determine the factors that influence the thickness of the choroid, and discuss in detail the relationship between the changes in the ChT and ocular elongation, and therefore, the effect of optical defocus on ChT and the development of the refractive error.

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