Table 1.
Demographic and Preoperative Ocular Characteristics
| N = 340 Eyes of 230 Patients | ||||
|---|---|---|---|---|
| Age (years) (data from 339 eyes) | Mean ± SD | 73.0 | ± | 7.7 |
| Range | 42 | – | 90 | |
| Gender (data from 340 eyes) | Male/Female | 43%/57% | ||
| Race/Ethnicity (data from 308 eyes) | White | 95.5% | ||
| Asian | 3.2% | |||
| Hispanic | 0.6% | |||
| Arabic | 0.6% | |||
| Type of Glaucoma (data from 340 eyes) | n % | |||
| POAG | 227 | 66.76% | ||
| Appositional ACG or ACG suspects | 35 | 10.29% | ||
| OHT/glaucoma suspect | 28 | 8.24% | ||
| NTG | 20 | 5.88% | ||
| PXG | 10 | 2.94% | ||
| CMG | 5 | 1.47% | ||
| PG | 10 | 2.94% | ||
| Uveitic | 3 | 0.88% | ||
| Neovascular | 1 | 0.29% | ||
| Angle recession | 1 | 0.29% | ||
| Eyes with prior glaucoma surgical or laser procedures (data from 340 eyes) | No | 221 | 65.0% | |
| Yesa | 119 | 35.0% | ||
| C:D ratio (data from 310 eyes) | Mean ± SD | 0.70 | ± | 0.17 |
| CDVA 20/40 or better (data from 340 eyes) | % (n/N) | 89.7% (305/340) | ||
| VF MD (dB) (data from 299 eyes) | Mean ± SD | −4.619 | ± | 4.998 |
| Central Corneal Thickness (µm) (data from 267 eyes) | Mean ± SD | 537 | ± | 37 |
| Glaucoma Severityb | Mild | 227 | 75.9% | |
| Moderate | 50 | 16.7% | ||
| Severe | 22 | 7.4% | ||
| IOP (mmHg) (data from 340 eyes) | Mean ± SD | 16.4 | ± | 4.7 |
| Number of medications (data from 340 eyes) | Mean ± SD | 1.49 | ± | 1.20 |
| Range | 0 | – | 5 | |
Notes: Not all preoperative measurements were available for all eyes. aIncludes 117 eyes with prior laser procedures [laser peripheral iridotomy and/or laser trabeculoplasty] and 2 eyes with prior trabeculectomy that was no longer functioning; some eyes had more than one prior procedure. bConsistent with Hodapp–Anderson–Parrish visual field criteria. Mild: VF MD no worse than −6 dB, moderate: VF MD worse than −6 dB but no worse than −12 dB, severe: VF MD worse than −12 dB.
Abbreviations: POAG, primary open-angle glaucoma; ACG, appositional angle-closure glaucoma; OHT, ocular hypertension; NTG, normal-tension glaucoma; PXG, pseudoexfoliative glaucoma; CMG, combined-mechanism glaucoma; PG, pigmentary glaucoma; IOP, intraocular pressure; SD, standard deviation; CDVA, corrected distance visual acuity; MD, mean deviation; VF, visual field; C:D, cup-to-disc.