Adaptação de lente de contato gelatinosa especial para ceratocone

Yamazaki, Ester Sakae; Silva, Vanessa Cristina Batista Da; Morimitsu, Vagner; Sobrinho, Marcelo Vicente de Andrade; Fukushima, Nelson; Lipener, César

doi:10.1590/s0004-27492006000400018

Cited by 5 publications

(2 citation statements)

References 7 publications

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“…Gonzales-Meijome et al 21 reported successful rehabilitation of three keratoconic eyes using the Soft K lens, with visual acuity of 6/4.5 being achieved. Yamazaki et al 22 fitted 80 keratoconic eyes with spherical and spherocylindrical soft contact lenses and found that over 90% of eyes achieved vision of 6/12 or better. These studies indicate that soft hydrogel lenses may be useful in patients who cannot tolerate RGP lenses.…”

Section: Introductionmentioning

confidence: 99%

Visual performance and aberration associated with contact lens wear in patients with keratoconus: a pilot study

Abdu¹,

Mohidin²,

Mohd‐Ali³

2014

OPTO

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Background: Rigid gas permeable (RGP) and silicone hydrogel (SH) contact lenses with specific designs are currently being used to improve visual function in patients with keratoconus. However, there are minimal data available comparing the effects of these lenses on visual function in patients with keratoconus. The objectives of this study were to compare visual acuity and contrast sensitivity using spectacles, RGP lenses, and SH lenses, and to evaluate the effects of RGP and SH lenses on higher-order aberrations and visual quality in eyes with keratoconus. The relationship between visual outcomes, aberration, and visual quality were also examined. Methods: This was a pilot study involving 13 eyes from nine subjects with keratoconus. Subjects were fitted with RGP and SH contact lenses. Visual acuity and contrast sensitivity were measured using Snellen and Pelli-Robson charts, respectively. Ocular aberrations and visual quality were measured using an OPD-Scan II device. All measurements were conducted before and after contact lens wear. Results: Significantly better visual acuity was obtained with RGP lenses than with spectacles or SH lenses (P,0.001). No significant difference in contrast sensitivity values was detected between RGP and SH lenses (P=0.06). Both SH and RGP lenses significantly reduced total ocular and higher-order aberrations (P,0.001) when compared with spectacles, but RGP lenses reduced trefoil, coma, and spherical aberrations more than SH lenses. No significant difference in astigmatic aberrations was found between RGP and SH lenses (P=0.12). Negative correlations were found between visual acuity and coma aberration and contrast sensitivity with higherorder aberrations and coma, trefoil, and astigmatic aberrations. Regarding visual quality, no significant difference was found between RGP and SH lenses, but RGP significantly improved visual quality when compared with spectacles (P=0.04). Conclusion: RGP lenses provided better visual acuity and greater reduction of aberrations than spectacles or SH lenses in patients with keratoconus. However, more data are needed to confirm these findings.

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Section: Introductionmentioning

confidence: 99%

Visual performance and aberration associated with contact lens wear in patients with keratoconus: a pilot study

Abdu¹,

Mohidin²,

Mohd‐Ali³

2014

OPTO

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“…Existem outras lentes especiais disponíveis, como as lentes gelatinosas especiais para ceratocone, mas os resultados com estas lentes são bastante limitados a casos incipientes e pacientes intolerantes ao uso de LCRGP (7) .…”

Section: Introductionunclassified

Avaliação da eficácia na adaptação de lentes de contato com relação à melhora visual em pacientes portadores de ceratocone

Duque¹,

Rehder²,

Leca³

2012

Rev. bras.oftalmol.

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Visual performance and optical quality with soft lenses in keratoconus patients

Jinabhai

Radhakrishnan

Tromans

et al. 2012

Ophthalmic Physiologic Optic

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The results show that RGP lenses provided superior visual performances and greater reduction of 3rd-order aberrations compared to toric SCL in this group of keratoconic patients. In the spectacle-wearing group, visual performance with the toric SCL was found to be comparable to that measured with spectacles. Nevertheless, with the exception of spherical aberration, the toric SCL were successful in significantly reducing uncorrected higher-order aberrations.

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Adaptação de lente de contato gelatinosa especial para ceratocone

Cited by 5 publications

References 7 publications

Visual performance and aberration associated with contact lens wear in patients with keratoconus: a pilot study

Visual performance and aberration associated with contact lens wear in patients with keratoconus: a pilot study

Avaliação da eficácia na adaptação de lentes de contato com relação à melhora visual em pacientes portadores de ceratocone

Visual performance and optical quality with soft lenses in keratoconus patients

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