A study of the anterior chamber before and after implantation of the Choyce Mark VIII lens

Alpar, John J.

doi:10.1016/s0146-2776(80)80039-5

Cited by 11 publications

(2 citation statements)

References 4 publications

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“…T o date, no precise means of measuring the diameter of the anterior chamber has been deviced (Reidy et al 1985;Alpar 1980). In our study the undersized, mobile lenses tended to rotate and to cause corneal oedema by contact with the endothelium.…”

Section: Discussionmentioning

confidence: 66%

Morphological changes and lens position 2½ years after intracapsular cataract extraction with implantation of a semiflexible anterior chamber lens

Næser

Hansen

Nissen

1987

Acta Ophthalmologica

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Morphological changes and lens position were examined in 51 patients 25 to 38 (mean 30) months after intracapsular cataract extraction (ICCE) with implantation of the semiflexible, 3M, style 70, anterior chamber lens. Morphological changes presumably associated with the ICCE proper were: iris transillumination defects (68.6%), rupture of anterior hyaloid membrane (20%), detachment of posterior vitreous (42.9%) and anterior synecchiae (13.7%). The implant-related morphological changes were caused by iris tucking (19.6%), small, mobile lenses causing endothelial disturbance (9.8%), iris-haptic adhesions and progressive ovalling of pupillary form. The present morphological changes were compared with a previously published examination of the same patients performed 4 months after surgery: 9 eyes without tissue changes around the lens feet at the previous follow-up now had iris-haptic adhesions involving from 1 to 4 lens feet. In 8 eyes the iris-haptic adhesions had progressed. Compared with the previous examination the fraction of eyes with tissue changes at the lens feet had risen from 47.1 to 64.7%, while the number of eyes with oval pupils had increased from 54.9 to 80.4%. Contact between lens haptic and iris root seems to constitute a constant stimulus for structural changes of the iris.

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Section: Discussionmentioning

confidence: 66%

Morphological changes and lens position 2½ years after intracapsular cataract extraction with implantation of a semiflexible anterior chamber lens

Næser

Hansen

Nissen

1987

Acta Ophthalmologica

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“…The incidence of reactive changes around lens haptics was around 30-35 o/c for most lens type. The 27 o/c incidence of neovascularization around lens feet reported by Alpar (1980) is an average value for wet-and dry-pack lenses, the 11 dry-pack implants were followed by 90.9 % neovascularization. The Azar 812 lens was removed from the market in august 1983 (Poleski & Willis 1984).…”

Section: Discussionmentioning

confidence: 96%

Gonioscopy after implantation of the semiflexible McGhan/3 M, style 70, anterior chamber lens A prospective study

Næser

Nissen

Hansen

1985

Acta Ophthalmologica

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Gonioscopy was performed in 64 patients 3-8 (mean 4) months after intracapsular cataract extraction with implantation of the semiflexible McGhanl3 M, style 70, anterior chamber lens. Iris tucking was present in 19 (30%) eyes. Iris-haptic adhesions (strands of iris-like tissue encircling the lens feet) were present in 24 (38 9%) eyes. Absence of ins tucking was statistically significantly (P 5 0.05) related to surgical expertise, while the occurrence of iris-haptic adhesions was independent of surgical experience. Pupillar deformation, usually an elongation in the axis of the implant, was present in 50%. The absence or presence of an abnormal gonioscopy could not with certainty be deduced from the form of the pupil. The majority of gonioscopically visible pathological changes in the chamber angle were located posterior to the trabecular meshwork.

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Long term observations on an anterior chamber Ridley intraocular lens

Jackson¹,

Archer²,

Chakravarthy³

et al. 1986

Int Ophthalmol

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In 1965 the patient, aged 6, sustained a perforating eye injury which was repaired and a traumatic cataract was aspirated within five weeks. Five years later a Ridley Mk 2 A/C intraocular lens was inserted. Several episodes of blunt trauma occurred over a three year period following this procedure. This paper reports the clinical, corneal pachometric and specular microscopic findings of both traumatized and normal fellow eyes 18 years after the initial incident. The corneal endothelial mosaic of the traumatized right eye was very irregular in the vicinity of the initial site of perforation. These marked variations in cell size and shape were less apparent at peripheral corneal areas. The estimated cell loss to the traumatized eye was in the region of 74% although in spite of this corneal function was maintained. The effects of trauma on the corneal endothelium are discussed and a brief review of the literature presented.

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A study of the anterior chamber before and after implantation of the Choyce Mark VIII lens

Cited by 11 publications

References 4 publications

Morphological changes and lens position 2½ years after intracapsular cataract extraction with implantation of a semiflexible anterior chamber lens

Morphological changes and lens position 2½ years after intracapsular cataract extraction with implantation of a semiflexible anterior chamber lens

Gonioscopy after implantation of the semiflexible McGhan/3 M, style 70, anterior chamber lens A prospective study

Long term observations on an anterior chamber Ridley intraocular lens

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