Results of a Glaucoma Shared Care Model Using the Enhanced Glaucoma Staging System and Disc Damage Likelihood Scale with a Novel Scoring Scheme in New Zealand

Figures & data

Table 1 Shared Care Scheme Scoring System from Glaucoma Follow-Up Appointment

Test	Finding	Points
IOP	Same as last hospital visit ± 2mmHg	0
IOP	3–7mmHg greater than prior hospital visit	1
IOP	Crossing Target IOP when previously under	1
IOP	8mmHg greater than prior hospital visit	3
Disc examination	New optic disc haemorrhage	1
Disc examination	DDLS increase of 1	1
Disc examination	DDLS increase of 2	3
Visual fields	eGSS grade increase of 1	3

Notes: A score of 3 or more for one eye resulted in a non-routine referral to secondary care, and below 3 the patient remained in the scheme for a routine follow-up. Target IOP for untreated ocular hypertension was 28mmHg, treated ocular hypertension was 24mmHg, primary open-angle glaucoma, pseudoexfoliation, and pigment dispersion 18mmHg, and normal-tension glaucoma was14mmHg.

Abbreviations: IOP, intraocular pressure; DDLS, Disc Damage Likelihood Scale; eGSS, enhanced Glaucoma Staging Score.

Table 2 The Reasons for Non-Routine Referrals to Secondary Care from Community Optometrist Visits and the Outcomes

Reason for Referral	Total	True Positives	False Positives	Not Seen
DDLS	5	2	2	1
eGSS	60	18	39	3
IOP	15	13	1	1
eGSS and optic disc	9	6	2	1
eGSS and IOP	10	4	5	1
eGSS, optic disc and IOP	1	0	1	0
Non-glaucoma	24	18	3	3

Abbreviations: IOP, intraocular pressure; DDLS, Disc Damage Likelihood Scale; eGSS, enhanced Glaucoma Staging Score.