Evaluation of the Safety & Efficacy of the LaserACE® Procedure to Restore Visual Function and Range of Accommodation
Evaluation of the Safety & Efficacy of the LaserACE® Procedure to Restore Visual Function and Range of Accommodation
A new minimally invasive procedure for treating presbyopia is being evaluated to determine if there is improvement in near and intermediate vision after treatment.
Inclusion Criteria:
Willing and able to understand and sign an informed consent;
Willing and able to attend postoperative examinations per protocol schedule;
40 years of age or greater, of either gender or any race;
Less than (<) 1.00D of astigmatism in each eye, measured in their manifest refraction;
Mean refractive spherical equivalent refraction (MRSE) of +/- 0.50D for distance vision; Note: Subjects who meet this criterion as a result of prior laser refractive surgery (LASIK, LASEK or PRK) may qualify; however, the subject must have had the LVC procedure performed at least 12 months prior to the LaserACE® procedure and be stable.
Uncorrected distance visual acuity (UDVA) is better than or equal to 20/40 (logMAR 0.30) in each eye, and a Corrected Distance Visual Acuity (CDVA) is better than or equal to 20/32 (logMAR 0.20) in each eye;
Demonstrate Stereopsis of 200 seconds of arc or better using a Randot stereoscopic fly test and reading correction;
In good ocular health with the exception of presbyopia;
Presbyopia as demonstrated by:
Intraocular pressure (IOP) >11mmHg and < 30 mmHg in each eye without IOP-lowering medication;
Less than or equal to (≤) 0.50D difference between the manifest refraction and the cycloplegic refraction;
Stable distance refraction is present, defined as ≤ 0.50D variation of refraction in the 12 months prior to the LaserACE® procedure. Manifest refraction cannot vary more than 0.50D from current spectacles that are at least 12 months of age, or from a documented refraction at least 12 months prior to the preoperative baseline exam;
Completed a washout period of two weeks (14 days) prior to LaserACE® procedure from prior treatment with:
Exclusion Criteria
Self-reported current pregnancy or breast-feeding, or plans to become pregnant during the entire study period;
History of ocular trauma or prior ocular surgery, or expected to require retinal laser treatment or other ocular surgical intervention;
Presence of ocular pathology other than cataract such as:
Known pathology that may affect visual acuity and/or are predicted to cause future acuity losses to a level of 20/30 (logMAR 0.18) or worse (e.g., macular degeneration);
Previous radial keratotomy or other corneal surgery (e.g., corneal transplant, DSAEK/DSEK, lamellar keratoplasty), except for LASIK, EpiLASIK/LASEK, or PRK;
Previous anterior or posterior chamber surgery (e.g., vitrectomy, laser iridotomy);
Keratoconus or keratoconus suspect with CDVA of less than (<) 20/20 (< logMAR 0.00) at distance;
Near visual acuity at 40cm equivalent to their distance vision with distance correction (i.e., no evident effect of reduced accommodative range);
Use of systemic or ocular medications that may affect vision (the use of any miotic or cycloplegic agent is specifically contraindicated);
Acute or chronic disease or illness that could increase the operative risk or confound the study outcome(s) (e.g., diabetes mellitus, immunocompromised, connective tissue disease);
Uncontrolled systemic or ocular disease;
Any abnormality preventing reliable applanation tonometry in EITHER eye;
Undilatable pupil such that one cannot examine the periphery of the retina;
Functional eye preference, defined as phoria measuring over 15dp horizontally and/or over 2dp vertically, any strabismus, or suppression.
History of scleral ectasia, scleritis, or episcleritis; or thin sclera < 400 microns, as determined by taking the average of three measurements with ultrasound biomicroscopy (UBM) pachymetry;
History of nuclear sclerosis LOCS III grade 2 or worse and/or other cataracts reducing CDVA;
Known allergies to study medications including topical steroids, antibiotics and NSAIDS;
Per PI discretion