A comparison between tube surgery, ND:YAG laser and diode laser cyclophotocoagulation in the management of refractory glaucoma.
OBJECTIVE
To compare the results of intraocular pressure (IOP) reduction by 3 treatment modalities, (a) glaucoma tube implants, (b) noncontact YAG laser cyclophotocoagulation (cycloYAG), and (c) contact transscleral diode laser cyclophotocoagulation (cyclodiode), in cases of advanced glaucoma refractory to alternative treatments.


METHODS
A consecutive group of 45 eyes that received cycloYAG were matched against two control groups of patients who had received tube surgery or cyclodiode, each control group having been derived from a database of patients.


RESULTS
Mean pretreatment IOP improved from 41.3, 38.6, and 32.0 mmHg for the tube, cycloYAG, and cyclodiode groups, respectively, to 16.4, 22.1, and 19.3 mmHg, respectively. Treatment success was achieved in 78%, 69%, and 71% of the tube, cycloYAG, and cyclodiode groups, respectively. Visual acuity deteriorated 2 or more Snellen lines in 16%, 7%, and 9% of the patients in the tube, cycloYAG, and cyclodiode groups, respectively. Complications included retinal detachment, hypotony, and phthisis.


CONCLUSIONS
All 3 methods provided acceptable IOP lowering in the short and medium term. Control of IOP was best in patients receiving tube surgery. Cyclodiode and cycloYAG treatments were similarly effective in lowering IOP. Tube surgery was associated with a greater incidence of sight threatening complications.
Western Eye Hospital, 153-173 Marylebone Road, London NW1 5QH, UK.
Philip A
PA
Bloom
Colin I
CI
Clement
Anthony
A
King
Baha
B
Noureddin
Kamal
K
Sharma
Roger A
RA
Hitchings
Peng T
PT
Khaw
D000328:Adult; D002924:Ciliary Body / Q000601:surgery*; D005260:Female; D005901:Glaucoma / Q000473:pathology / Q000601:surgery*; D006801:Humans; D007429:Intraocular Pressure; D054023:Lasers, Semiconductor; D008028:Light Coagulation; D008297:Male; D016896:Treatment Outcome