The Use of Contact Lenses After Keratoconic Epikeratoplasty

Lembach, Richard G.

doi:10.1001/archopht.1989.01070010374026

Cited by 10 publications

(2 citation statements)

References 11 publications

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“…Epikeratoplasty is recommended for those patients who are contact lens intolerant, but who can obtain at least 20/40 visual acuity with a contact lens and have minimal or absent apical scarring [4]. Until now most keratoconus patients were fitted with hard (PMMA) or rigid gas permeable (RGP) hard contact lenses with a spherical geometry [5].…”

Section: Introductionsupporting

confidence: 43%

Improvement of visual acuity and corneal physiology in keratoconus by fitting aspherical, high oxygen-permeable contact lenses

Kok

Cheng

1991

Int Ophthalmol

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Keratoconus is a condition in which the cornea assumes a complex irregular curvature caused by central corneal thinning. The abnormal topography of the cornea in combination with central corneal scarring results in an impaired visual acuity. Even in mild cases spectacles do not correct vision adequately. The use of hard contact lenses with a spherical geometry in the past has already given a marked therapeutic improvement. The use of these lenses however, is complicated by hypoxia and mechanical trauma of the cornea. These complications could theoretically be avoided by fitting elliptical lenses with a high oxygen transmission. To investigate this hypothesis we compared low oxygen-permeable spherical lenses with high oxygen-permeable elliptical contact lenses in a group of twenty patients with mild keratoconus. Our results showed both a marked subjective and objective visual improvement after fitting elliptical lenses with a low incidence of complications.

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Section: Introductionsupporting

confidence: 43%

Improvement of visual acuity and corneal physiology in keratoconus by fitting aspherical, high oxygen-permeable contact lenses

Kok

Cheng

1991

Int Ophthalmol

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“…26 Lembach, kontakt lens intoleransı nedeniyle başarılı bir keratoplasti geçiren keratokonus hastalarının %37'sinin tekrar SGG kontakt lens kullanmaya başladığını belirtmiştir. 27 Bu bilgiler hastaları kontakt lens kullanımına yönlendirmede çok değerlidir.…”

Section: Discussionunclassified

İleri Keratokonuslu Olgularda Kontakt Lens Uygulaması: Uzun Süreli Takip Sonuçlarımız

...

2012

Tjo

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Amaç: İleri keratokonuslu gözlerde sert gaz geçirgen(SGG) kontakt lens kullanımının uzun süreli takip sonuçlarını değerlendirmek. Ge reç ve Yön tem: SGG kontakt lens uygulanan ileri keratokonuslu gözler retrospektif olarak incelendi. So nuç lar: İleri keratokonus tanısı konup gaz geçirgen kontakt lens uygulanan 25 kadın 17 erkek 42 hastanın 59 gözü çalışma kapsamına alındı. Hastalar 3 ile 12 yıl (ortalama 6,57±3,60) takip edildi. İlk muayenede yaş ortalaması 25,88±9,10; K1 değeri ortalaması 6,49±0,40 mm, K2 değeri ortalaması 5,91±0,40 mm. idi. Gözlük ve kontakt lens ile ortalama görme keskinlikleri 0,26±0,10 (0,63±0,20 logMAR) ve 0,66±0,20 (0,20±0.10 logMAR) bulundu. Görme keskinlikleri arasındaki fark istatistiksel olarak anlamlıydı(p=0,0001). Son muayenede SGG kontakt lens ile ortalama görme keskinliği 0,68±0,20 (0,19±0,10 logMAR) idi. İlk ve son muayenelerde kontakt lens ile alınan görme keskinlikleri arasında istatistiksel olarak anlamlı bir fark yoktu (p=0,32). Uzun takip süresi sonunda 17 gözde apikal skar gelişti. Sadece bir hastanın 2 gözüne 6 yıl SGG kontakt lens kullanımından sonra keratoplasti gerekti. Tar t›fl ma: İleri keratokonusu olan gözlerde SGG kontakt lensler, keratoplasti öncesi mutlaka düşünülmelidir. (Turk J Ophthalmol 2012; 42: 202-6) Anah tar Ke li me ler: Keratokonus, kontakt lens Sum maryPur po se: To evaluate the long-term results of rigid gas permeable (RGP) contact lenses in severe keratoconic eyes. Ma te ri al and Met hod: Severe keratoconic eyes with RGP contact lenses were evaluated retrospectively. Re sults: Long-term follow-up results of RGP contact lenses applied to 59 eyes of 42 patients (25 women, 17 men) with a diagnosis of severe keratoconus were analyzed. Follow-up period was 3 to 12 years (mean: 6.57±3.60). The mean age at first exam was 25.88±9.10 years, the mean corneal curve K1 was 6.49±0.40 mm and K2 was 5.91±0.40 mm. Mean visual acuities with spectacles and contact lenses were 0.26±0.10 lines (0.63±0.20 logMAR) and 0.66±0.20 lines (0.20±0.10 logMAR), respectively. The difference between both visual acuities was statistically significant (p=0.0001). At the last visit, the mean visual acuity with RGP contact lenses was 0.68±0.20 lines (0.19±0.10 logMAR). There was no statistically significant difference in visual acuity between first and last examinations with contact lenses (p=0.32). During the long-term follow-up period, apical scarring developed in 17 eyes. Only the 2 eyes of one patient needed penetrating keratoplasty after 6 years of RGP contact lens use. Dis cus si on: Use of RGP contact lenses should be considered before penetrating keratoplasty in cases of severe keratoconus. (Turk J Ophthalmol 2012; 42: 202-6)

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The role of rigid contact lenses in the management of keratoconus

Woodward¹

1991

Journal of The British Contact Lens Association

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The Use of Contact Lenses After Keratoconic Epikeratoplasty

Cited by 10 publications

References 11 publications

Improvement of visual acuity and corneal physiology in keratoconus by fitting aspherical, high oxygen-permeable contact lenses

Improvement of visual acuity and corneal physiology in keratoconus by fitting aspherical, high oxygen-permeable contact lenses

İleri Keratokonuslu Olgularda Kontakt Lens Uygulaması: Uzun Süreli Takip Sonuçlarımız

The role of rigid contact lenses in the management of keratoconus

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