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Binocular effects of intraocular lens insertion
Transactions of the Ophthalmological Societies of the United Kingdom
|April 1, 1977
Summary
Primary Binkhorst intraocular lens insertion for uniocular cataract surgery achieved 88% good visual acuity. Most patients regained binocular vision without further surgery, with Lang
Area of Science:
- Ophthalmology
- Surgical Innovation
Background:
- Cataract surgery is a common procedure.
- Intraocular lens (IOL) implantation is a standard technique.
Purpose of the Study:
- To evaluate the outcomes of primary Binkhorst intraocular lens insertion for uniocular cataract.
- To assess visual acuity, binocular function, and the need for squint surgery post-operatively.
Main Methods:
- Observation of fifty patients undergoing primary Binkhorst IOL insertion for uniocular cataract.
- Assessment of visual acuity (6/12 or better).
- Evaluation of orthotropia, binocular functions, and stereoacuity using formal tests and Lang's pen test.
Main Results:
- 88% of patients achieved 6/12 or better visual acuity in the operated eye.
- Most patients with healthy fellow eyes regained orthotropia and binocular functions without squint surgery.
- Formal stereoacuity tests were poorly performed, but Lang's pen test proved a reliable indicator of near-vision binocular performance.
Conclusions:
- Primary Binkhorst IOL insertion is effective for uniocular cataract, yielding good visual acuity.
- The procedure often restores binocular function without the need for additional squint surgery.
- Lang's pen test is a valuable clinical tool for assessing binocular performance in near vision post-cataract surgery.