title: Refractive outcome of combined phacoemulsification and endoscopic cyclophotocoagulation.
abstract: OBJECTIVE
  To compare the refractive outcome of eyes that underwent phacoemulsification combined with endoscopic cyclophotocoagulation (phaco-ECP) with the eyes that underwent phacoemulsification alone.
  
  
  METHODS
  A retrospective case series review of 103 consecutive eyes that underwent phaco-ECP and 62 eyes that underwent phacoemulsification between January 2006 and August 2012 was conducted. Post-operative refractive outcomes were obtained by subjective refraction or autorefraction. Demographic data, best corrected visual acuity, intraocular pressure, number of glaucoma agents and mean deviation of the Humphrey visual field test (MD) were also analysed.
  
  
  RESULTS
  The total number of eyes included in the study was 62 eyes for the phaco-ECP group and 62 eyes for the control group who underwent phacoemulsification alone. More than 90% of eyes (n = 56) in phaco-ECP group achieved post-operative refraction within ±1 dioptre (D) of the target refraction. In the control group, 100% of eyes achieved post-operative refraction within ±1D of the target refraction. When comparing the difference between the target and the actual refractive outcome between the phaco-ECP and the control group, there was no statistically significant difference.
  
  
  CONCLUSIONS
  Refractive outcome after phaco-ECP is comparable to phacoemulsification alone. This study suggests that the intraocular lens power can be selected for cataract surgery alone and that ECP does not change the effective lens position significantly; therefore, no modification of biometry formulae is required. Phaco-ECP should be considered as an effective, safe and predictable surgical treatment option for glaucoma patients with co-existing cataract.
authors.affiliation: Imperial College Healthcare NHS Trust, The Western Eye Hospital, 153-173 Marylebone Road, London, NW1 5QH, UK. swan_kang@hotmail.com.
authors.forename: S
authors.identifier: http://orcid.org/0000-0002-1303-9188
authors.initials: S
authors.lastname: Kang
authors.affiliation: Imperial College Healthcare NHS Trust, The Western Eye Hospital, 153-173 Marylebone Road, London, NW1 5QH, UK.
authors.forename: S
authors.initials: S
authors.lastname: Luk
authors.affiliation: Imperial College Healthcare NHS Trust, The Western Eye Hospital, 153-173 Marylebone Road, London, NW1 5QH, UK.
authors.forename: H
authors.initials: H
authors.lastname: Han
authors.affiliation: Imperial College Healthcare NHS Trust, The Western Eye Hospital, 153-173 Marylebone Road, London, NW1 5QH, UK.|Imperial College London, London, UK.|Glaucoma and Retinal Neuro-degeneration Research Group, UCL Institute of Ophthalmology, London, UK.
authors.forename: M F
authors.initials: MF
authors.lastname: Cordeiro
authors.affiliation: Imperial College Healthcare NHS Trust, The Western Eye Hospital, 153-173 Marylebone Road, London, NW1 5QH, UK.|Imperial College London, London, UK.
authors.forename: F
authors.initials: F
authors.lastname: Ahmed
authors.affiliation: Imperial College Healthcare NHS Trust, The Western Eye Hospital, 153-173 Marylebone Road, London, NW1 5QH, UK.|Imperial College London, London, UK.
authors.forename: P
authors.initials: P
authors.lastname: Bloom
authors.affiliation: Imperial College Healthcare NHS Trust, The Western Eye Hospital, 153-173 Marylebone Road, London, NW1 5QH, UK.|Imperial College London, London, UK.
authors.forename: L
authors.initials: L
authors.lastname: Crawley
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D003131:Combined Modality Therapy; D005260:Female; D005901:Glaucoma / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D017075:Laser Coagulation / Q000379:methods*; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D012029:Refraction, Ocular / Q000502:physiology; D012030:Refractive Errors / Q000503:physiopathology*; D012189:Retrospective Studies
keywords: Cataract; Endoscopic cyclophotocoagulation; Glaucoma; Phaco-ECP; Phacoemulsification; Refractive outcome