Behrens‐Baumann 2005.

Methods	Study design: RCT Study grouping: parallel group Exclusions after randomisation: not reported Losses to follow‐up: not reported How missing data were handled: not reported Reported power size calculation? no
Participants	Baseline characteristics Blue‐light filtering IOL group Number of participants: number of people (number of eyes): not reported Sex (number of women/number of men): not reported Age (mean ± unit of error): not reported Non‐blue‐light filtering IOL group Number of participants: number of people (number of eyes): not reported Sex (number of women/number of men): not reported Age (mean ± unit of error): not reported Overall Number of participants: number of people (number of eyes): 40 (?) Sex (number of women/number of men): not reported Age (mean ± unit of error): not reported Inclusion criteria: not reported Exclusion criteria: people with amblyopia or abnormal Ishihara test Comparison of study groups at baseline: not reported
Interventions	Intervention characteristics Blue‐light filtering IOL Type of IOL: AF‐1 (UY) YA‐60BB (Hoya) Non‐blue‐light filtering IOL Type of IOL: AF‐ I (UV) VA‐60BB (Hoya)
Outcomes	Colour recognition and contrast sensitivity (mesopic and photopic); time point not specified in the abstract
Identification	Sponsorship source: Funding sources: not reported Declaration of interest: not reported Country: not reported Setting: not reported Comments: Date study conducted: not reported Trial registration number: not reported Contacting study investigators: study authors not contacted; no additional information used for review First author's name: Wolfgang Behrens‐Baumann MD Institution: not reported Email: not reported Address: not reported
Notes	AAO conference abstract
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Judgement comment: not reported how list was generated. Study is described as “randomised” but with no further details.
Allocation concealment (selection bias)	Unclear risk	Judgement comment: not reported how allocation administered. Study is described as “randomised” but with no further details.
Blinding of participants and personnel (performance bias) All outcomes	High risk	Quote: "open label investigation," Judgement comment: study is described as "open label"
Blinding of outcome assessment (detection bias) All outcomes	High risk	Judgement comment: study is described as "open label"
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Judgement comment: follow‐up not reported
Selective reporting (reporting bias)	Unclear risk	Judgement comment: no access to protocol or trials registry entry
Other bias	Low risk	Judgement comment: no other apparent sources of bias