Gap finder
Search review questions
Each row is one question a systematic review asked: who, what, compared with what, and which outcome, with the effect it found and how certain that is. Words match anywhere in the field.
2,112 questions in 171 reviews · Eyes and Vision
current versionsNo studies 587 · 27.8%Ungraded 95 · 4.5%Very low 446 · 21.1%Low 557 · 26.4%Moderate 361 · 17.1%High 66 · 3.1%
Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.
| Question | Effect | Evidence | Status / GRADE |
|---|---|---|---|
Aqueous shunts with vs without mitomycin C Proportion of participants with an adverse event · adults with glaucoma requiring aqueous shunt surgery Aqueous shunts with mitomycin C versus aqueous shunts alone for glaucoma (2019) · Cochrane | no estimate extracted | 2 studies · 85 participants | Low |
Endoscopic cyclophotocoagulation vs the Ahmed drainage implant Pain control change from baseline 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | NR | No studies |
Micropulse vs continuous‐wave cyclophotocoagulation Mean change in best‐corrected visual acuity measured by logMAR 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | 1 study · 48 participants | Ungraded |
Micropulse vs continuous‐wave cyclophotocoagulation Mean change in the mean deviation in study eyes change from baseline 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | NR | No studies |
Micropulse vs continuous‐wave cyclophotocoagulation Mean number of glaucoma medications 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | 1 study · 46 participants | Ungraded |
Micropulse vs continuous‐wave cyclophotocoagulation Adverse events 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | 1 study · 46 participants | Ungraded |
Micropulse vs continuous‐wave cyclophotocoagulation Mean change in quality of life scores 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | NR | No studies |
Intervention NR Pain control change from baseline 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | NR | No studies |
Intervention NR Mean change in IOP measured in mmHg 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | 1 study · 95 participants | Low |
Intervention NR Mean change in best‐corrected visual acuity measured by logMAR 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | 2 studies · 127 participants | Very low |
Intervention NR Mean change in the mean deviation in study eyes change from baseline 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | NR | No studies |
Intervention NR Mean number of glaucoma medications 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | NR | No studies |
Endoscopic cyclophotocoagulation vs the Ahmed drainage implant Mean change in IOP measured in mmHg 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | 1 study · 58 participants | Low |
Intervention NR Adverse events 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | NR | No studies |
Intervention NR Mean change in quality of life scores 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | NR | No studies |
Intervention NR Pain control change from baseline 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | 1 study · 50 participants | Very low |
Intervention NR Mean change in IOP measured in mmHg 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | 1 study · 89 participants | Ungraded |
Intervention NR Mean change in best‐corrected visual acuity measured by logMAR 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | 1 study · 60 participants | Very low |
Intervention NR Mean change in the mean deviation in study eyes change from baseline 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | NR | No studies |
Intervention NR Mean number of glaucoma medications 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | 1 study · 50 participants | Very low |
Intervention NR Adverse events 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | 1 study · 50 participants | Ungraded |
Intervention NR Mean change in quality of life scores 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | NR | No studies |
Endoscopic cyclophotocoagulation vs the Ahmed drainage implant Mean change in best‐corrected visual acuity measured by logMAR 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | 1 study · 54 participants | Very low |
Endoscopic cyclophotocoagulation vs the Ahmed drainage implant Mean change in mean deviation in study eyes 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | NR | No studies |
Endoscopic cyclophotocoagulation vs the Ahmed drainage implant Mean number of glaucoma medications 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | 1 study · 54 participants | Very low |
Endoscopic cyclophotocoagulation vs the Ahmed drainage implant Adverse events 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | 1 study · 68 participants | Very low |
Endoscopic cyclophotocoagulation vs the Ahmed drainage implant Mean change in quality of life scores 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | NR | No studies |
Micropulse vs continuous‐wave cyclophotocoagulation Pain control change from baseline 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | 1 study · 44 participants | Ungraded |
Micropulse vs continuous‐wave cyclophotocoagulation Mean change in IOP measured in mmHg 12 months postintervention · adults with refractory glaucoma Cyclodestructive procedures for refractory glaucoma (2019) · Cochrane | no estimate extracted | 1 study · 48 participants | Ungraded |
Gore‐Tex vs Ethibond Functional success of the surgery · frontalis sling surgery for congenital ptosis Types of materials for frontalis sling surgery for congenital ptosis (2019) · Cochrane | RR 1.12 [0.93, 1.35] | 1 study · 60 participants | Low |
Autogenous fascia vs Gore‐Tex Sling removal · frontalis sling surgery for congenital ptosis Types of materials for frontalis sling surgery for congenital ptosis (2019) · Cochrane | no estimate extracted | 1 study · 110 participants | Low |
Autogenous fascia vs Gore‐Tex Infection · frontalis sling surgery for congenital ptosis Types of materials for frontalis sling surgery for congenital ptosis (2019) · Cochrane | RR 0.5 [0.04, 4.78] | 1 study · 110 participants | Low |
Autogenous fascia vs Gore‐Tex Ocular and systemic complications · frontalis sling surgery for congenital ptosis Types of materials for frontalis sling surgery for congenital ptosis (2019) · Cochrane | RR 0.43 [0.11, 1.5] | 1 study · 110 participants | Low |
Autogenous fascia vs Gore‐Tex Economic outcomes ‐ not measured · frontalis sling surgery for congenital ptosis Types of materials for frontalis sling surgery for congenital ptosis (2019) · Cochrane | no estimate extracted | NR | No studies |
Autogenous fascia vs Gore‐Tex Quality of life ‐ not measured · frontalis sling surgery for congenital ptosis Types of materials for frontalis sling surgery for congenital ptosis (2019) · Cochrane | no estimate extracted | NR | No studies |
Mersilene mesh vs autogenous fascia Functional success of surgery ‐ not reported · frontalis sling surgery for congenital ptosis Types of materials for frontalis sling surgery for congenital ptosis (2019) · Cochrane | no estimate extracted | NR | No studies |
Mersilene mesh vs autogenous fascia Recurrence after surgery · frontalis sling surgery for congenital ptosis Types of materials for frontalis sling surgery for congenital ptosis (2019) · Cochrane | no estimate extracted | 1 study · 31 participants | Very low |
Mersilene mesh vs autogenous fascia Sling removal ‐ not reported · frontalis sling surgery for congenital ptosis Types of materials for frontalis sling surgery for congenital ptosis (2019) · Cochrane | no estimate extracted | NR | No studies |
Mersilene mesh vs autogenous fascia Infection ‐ not reported · frontalis sling surgery for congenital ptosis Types of materials for frontalis sling surgery for congenital ptosis (2019) · Cochrane | no estimate extracted | NR | No studies |
Mersilene mesh vs autogenous fascia Ocular and systemic complications · frontalis sling surgery for congenital ptosis Types of materials for frontalis sling surgery for congenital ptosis (2019) · Cochrane | no estimate extracted | 1 study · 31 participants | Very low |
Gore‐Tex vs Ethibond Recurrence after surgery · frontalis sling surgery for congenital ptosis Types of materials for frontalis sling surgery for congenital ptosis (2019) · Cochrane | RR 0.33 [0.01, 6.64] | 1 study · 60 participants | Low |
Mersilene mesh vs autogenous fascia Economic outcomes ‐ not reported · frontalis sling surgery for congenital ptosis Types of materials for frontalis sling surgery for congenital ptosis (2019) · Cochrane | no estimate extracted | NR | No studies |
Mersilene mesh vs autogenous fascia Quality of life ‐ not reported · frontalis sling surgery for congenital ptosis Types of materials for frontalis sling surgery for congenital ptosis (2019) · Cochrane | no estimate extracted | NR | No studies |
Gore‐Tex vs Ethibond Sling removal · frontalis sling surgery for congenital ptosis Types of materials for frontalis sling surgery for congenital ptosis (2019) · Cochrane | RR 0.2 [0.01, 3.37] | 1 study · 60 participants | Low |
Gore‐Tex vs Ethibond Infection · frontalis sling surgery for congenital ptosis Types of materials for frontalis sling surgery for congenital ptosis (2019) · Cochrane | RR 1 [0.14, 5.28] | 1 study · 60 participants | Low |
Gore‐Tex vs Ethibond Ocular and systemic complications · frontalis sling surgery for congenital ptosis Types of materials for frontalis sling surgery for congenital ptosis (2019) · Cochrane | no estimate extracted | 1 study · 60 participants | Low |
Gore‐Tex vs Ethibond Economic outcomes ‐ not measured · frontalis sling surgery for congenital ptosis Types of materials for frontalis sling surgery for congenital ptosis (2019) · Cochrane | no estimate extracted | NR | No studies |
Gore‐Tex vs Ethibond Quality of life ‐ not measured · frontalis sling surgery for congenital ptosis Types of materials for frontalis sling surgery for congenital ptosis (2019) · Cochrane | no estimate extracted | NR | No studies |
Autogenous fascia vs Gore‐Tex Functional success · frontalis sling surgery for congenital ptosis Types of materials for frontalis sling surgery for congenital ptosis (2019) · Cochrane | RR 0.79 [0.62, 1.02] | 1 study · 110 participants | Low |
Autogenous fascia vs Gore‐Tex Recurrence after surgery · frontalis sling surgery for congenital ptosis Types of materials for frontalis sling surgery for congenital ptosis (2019) · Cochrane | RR 0.5 [0.12, 1.8] | 1 study · 110 participants | Low |