Modern Ophthalmic Optics

Alonso, José María Rabal; Gómez‐Pedrero, José A.; Quiroga, Juan Antonio

doi:10.1017/9781316275474

Cited by 30 publications

(72 citation statements)

References 228 publications

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“…Specific gravity refers to the density of the material compared to that of water, with a higher specific gravity denoting a heavier lens. 21 The Abbe value measures the ability of the material to disperse light, with a higher Abbe value indicating a lower likelihood of chromatic aberrations. 21 Typically, a higher refractive index lens material provides a thinner lens profile but more chromatic aberrations and the flatter lens curves can increase surface reflections.…”

Section: Practical Applicationmentioning

confidence: 99%

“…21 The Abbe value measures the ability of the material to disperse light, with a higher Abbe value indicating a lower likelihood of chromatic aberrations. 21 Typically, a higher refractive index lens material provides a thinner lens profile but more chromatic aberrations and the flatter lens curves can increase surface reflections. 21 These disadvantages can be eliminated by applying ARC on the lens surface.…”

Section: Practical Applicationmentioning

confidence: 99%

“…21 Typically, a higher refractive index lens material provides a thinner lens profile but more chromatic aberrations and the flatter lens curves can increase surface reflections. 21 These disadvantages can be eliminated by applying ARC on the lens surface. 21 It is also important to note that surface coatings may reduce the impact resistance of a lens.…”

Section: Practical Applicationmentioning

confidence: 99%

“…21 These disadvantages can be eliminated by applying ARC on the lens surface. 21 It is also important to note that surface coatings may reduce the impact resistance of a lens. 7 Spectacles for occupational ocular safety and everyday use (dress spectacles) are governed by different international safety regulations.…”

Section: Practical Applicationmentioning

confidence: 99%

“…7 Spectacles for occupational ocular safety and everyday use (dress spectacles) are governed by different international safety regulations. 21 Generally, high index materials, polycarbonate and Trivex ® fulfils the FDA ocular safety standards. 21 International standards also regulate filters for ocular protection in occupational use of lasers, and exposure to radiation or polarised light.…”

Section: Practical Applicationmentioning

confidence: 99%

See 4 more Smart Citations

<p>Historical Development, Applications and Advances in Materials Used in Spectacle Lenses and Contact Lenses</p>

Pillay

Hansraj

Rampersad

2020

OPTO

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Lenses used in vision correction have evolved from the initial glass reading stone of the 10th century to the currently anticipated planar metalens made from "nanopillars" of titanium dioxide. With ideas from early scientific minds being translated into reality, and military commissioned concepts adapted for civilian use, spectacle lens and contact lens materials have progressed significantly over the last century, with the expectation of further lens material innovations ahead. The purpose of this article is a review of literature on the historical developments and advances in spectacle lens and contact lens materials.

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Section: Practical Applicationmentioning

confidence: 99%

Section: Practical Applicationmentioning

confidence: 99%

Section: Practical Applicationmentioning

confidence: 99%

Section: Practical Applicationmentioning

confidence: 99%

Section: Practical Applicationmentioning

confidence: 99%

See 3 more Smart Citations

<p>Historical Development, Applications and Advances in Materials Used in Spectacle Lenses and Contact Lenses</p>

Pillay

Hansraj

Rampersad

2020

OPTO

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Optical Dispensing

Maseedupalli

2024

Ophthalmic Diagnostics

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Virtual reality (VR) as a testing bench for consumer optical solutions: a machine learning approach (GBR) to visual comfort under simulated progressive addition lenses (PALs) distortions

García García,

Sauer,

Watson

et al. 2024

Virtual Reality

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For decades, manufacturers have attempted to reduce or eliminate the optical aberrations that appear on the progressive addition lens’ surfaces during manufacturing. Besides every effort made, some of these distortions are inevitable given how lenses are fabricated, where in fact, astigmatism appears on the surface and cannot be entirely removed, or where non-uniform magnification becomes inherent to the power change across the lens. Some presbyopes may refer to certain discomfort when wearing these lenses for the first time, and a subset of them might never adapt. Developing, prototyping, testing and purveying those lenses into the market come at a cost, which is usually reflected in the retail price. This study aims to test the feasibility of virtual reality (VR) for testing customers’ satisfaction with these lenses, even before getting them onto production. VR offers a controlled environment where different parameters affecting progressive lens comforts, such as distortions, image displacement or optical blurring, can be inspected separately. In this study, the focus was set on the distortions and image displacement, not taking blur into account. Behavioural changes (head and eye movements) were recorded using the built-in eye tracker. We found participants were significantly more displeased in the presence of highly distorted lens simulations. In addition, a gradient boosting regressor was fitted to the data, so predictors of discomfort could be unveiled, and ratings could be predicted without performing additional measurements.

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Modern Ophthalmic Optics

Cited by 30 publications

References 228 publications

<p>Historical Development, Applications and Advances in Materials Used in Spectacle Lenses and Contact Lenses</p>

<p>Historical Development, Applications and Advances in Materials Used in Spectacle Lenses and Contact Lenses</p>

Optical Dispensing

Virtual reality (VR) as a testing bench for consumer optical solutions: a machine learning approach (GBR) to visual comfort under simulated progressive addition lenses (PALs) distortions

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