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[Stereoscopic vision before and after cataract extraction with artificial lens implantation]
Background:
Based on current insurance data patients with pseudophakia can be expected to suffer reduced stereoacuity. A prospective study was carried out to test this relationship.
Patients And Methods:
Stereoacuity was measured by Titmus and Lang tests in 50 patients with cataracts who had no other ocular complaints and a minimal visual acuity of the more impaired eye of 20/50. Examinations were carried out before and for 3 days after cataract surgery (phacoemulsification, posterior chamber lens).
Results:
Median stereoacuity improved from 60" preoperatively to 50" postoperatively in patients with bilateral phakia, from 90" to 45" in those with unilateral phakia. Results of the Lang test were difficult to interpret.
Conclusion:
Near stereoacuity is not worsened by unilateral or bilateral pseudophakia if there are no other complaints, and if the eyes are corrected for reading distance.