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Related Concept Videos

Angle Closure Glaucoma: Treatment01:28

Angle Closure Glaucoma: Treatment

Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
Open Angle Glaucoma: Treatment01:27

Open Angle Glaucoma: Treatment

In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
Drugs such as carbonic anhydrase inhibitors, α2- and...
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Glaucoma: Overview

Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
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Diabetic Retinopathy

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Related Experiment Video

Updated: May 7, 2026

Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile
05:46

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Published on: September 20, 2024

Monovision surgery in myopic presbyopes: visual function and satisfaction.

Eliya Levinger1, Omer Trivizki, Russell Pokroy

  • 1*MD Enaim Refractive Surgery Center (EL, OT, SL), Jerusalem; Department of Ophthalmology (EL, OT), Sourasky Tel-Aviv Medical Center, affiliated to the Sackler Faculty of Medicine, Tel-Aviv University; Department of Ophthalmology (RP, GS), Hillel Yaffe Medical Center, Hadera; and Barzilai Medical Center (SL), Ashkelon, Israel.

Optometry and Vision Science : Official Publication of the American Academy of Optometry
|September 26, 2013
PubMed
Summary

Monovision excimer laser correction effectively treats myopic presbyopia, significantly improving patient satisfaction. This refractive surgery option offers satisfactory visual outcomes for suitable candidates seeking improved near and distance vision.

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Area of Science:

  • Ophthalmology
  • Refractive Surgery
  • Vision Science

Background:

  • Presbyopia, the age-related loss of near focusing ability, affects individuals over 40.
  • Myopic presbyopia presents a unique challenge, combining myopia with the inability to accommodate.
  • Monovision correction, correcting one eye for distance and the other for near, is a surgical option.

Purpose of the Study:

  • To evaluate the efficacy and patient satisfaction of monovision excimer laser correction.
  • To assess visual outcomes in patients with myopic presbyopia undergoing this procedure.

Main Methods:

  • A prospective interventional case series of 40 patients (aged ≥40) with myopic presbyopia.
  • Monovision correction: dominant eye for distance, non-dominant for near, with ≥1.00 D anisometropia.
  • Comprehensive visual assessments and patient questionnaires preoperatively and at 6/12 months postoperatively.

Main Results:

  • High patient satisfaction (41.5% to 85.2%) at 1-year follow-up.
  • Significant improvement in uncorrected visual acuity and effective correction of refractive error.
  • Decreased stereopsis, contrast sensitivity, and increased glare reported by patients.

Conclusions:

  • Monovision excimer laser correction is an effective treatment for myopic presbyopia.
  • It offers satisfactory visual results and should be considered for suitable patients.
  • Patient satisfaction significantly increases post-procedure.