Complications of angle supported phakic intraocular lenses [abstract]

PURPOSE: To identify the general and specific complications of angle supported Phakic Intraocular Lenses (IOLs) in Refractive Surgery. METHODS: Review of 27 cases (52 eyes) with angle-supported IOL's over a three-year period. RESULTS: Six eyes demonstrate on oval pupil (11.5 percent). Five eyes had visually significant post-operative astigmatism (9.6 percent). Five eyes were treated for anterior uvetitis (9.6 percent). One eye has maintained chronic uveitis (2 percent) Two eyes have an eccentric pupil (4 percent). Two eyes have visually significant nuclear sclerosis (4 percent). One eye underwent ILO replacement for over-correction (2 percent). One eye had an extrusion of a lens haptic (2 percent). One eye experienced a pupillary block glaucoma (2 percent). One eye experienced trauma 3 days post-operatively (2 percent). CONCLUSION: All complications were resolved by conventional medical and surgical therapy, resulting in good to excellent visual acuity (AU)

Update on phakic intraocular lenses: two-year results

Since July 21, 1998, twenty-seven eyes have been implanted with angle-supported OII phakic intraocular lenses (IOL) in the Eastern Caribbean. Present visual acuity ranges from 20/20 (78 percent), 20/25 (14 percent), 20/30 (4 percent), 20/40 (4 percent); intraocular pressures range from 14 to 21 mmHg. There have been no inflammatory complications or cataract formation to date. All information is included in an FDA study on phakic - IOLs.(AU)

The use of intraocular lenses for correcting aphakic vision after cataract extraction: an initial experience - abstract

Cataract surgery renders the eye aphakic. Aphakia is defined as the absence of the lens from its normal refracting position behind the pupil. This reduces the dioptric apparatus to a single refracting surface - the cornea. The eye becomes highly long-sighted. The alternatives for visual correction are: spectacles, contact lenses and intraocular lens implantation. Because of the strength of the lens and the distance from the eye, the use of spectacles for correcting aphakic vision is associated with problems of the optical defects of strong converging lenses: magnification, peripheral distortion, and limitation of visual field. The magnificatioin makes it impossible to restore binocularity by means of spectacles in the individual who has had a cataract removed from one eye, and has good vision in the fellow eye. Contact lenes and intraocular Lenses (I.O.L.), because they are placed on and in the eye respectively, do not produce significant modification of the image. They move with the eye. They may therefore be used in restoring binocular vision in the presence of uniocular aphakia. Nine eyes with IOLs are reported with ages ranging from 43 to 77 yrs followed up for 6 weeks to 21 months. All achieved vision of at least 6/9 and N6. All reported to comfortable vision. No major complications were encountered. IOLs are recommeded as a very satisfactory menas of aphakic visual correction (AU)

Lens implant surgery in a developing country

Unilateral, mostly traumatic cataract in children and adults is considered a good indication for lens implant surgery in developing countries. In Suriname fourteen patients with unilateral, non-senile cataract underwent pseudophakos surgery from 1975 to 1980. No major complications occurred. In ten of the fourteen patients good binocular vision was achieved. Two patients had good visual acuity with poor fusion. One patient had persistent deprivation amblyoplia. Six patients were ultimately lost to follow-up.(AU)