Characteristics of respondents with glaucoma and dry eye in a national panel survey

Figures & data

Table 1 Patients with glaucoma vs controls: Demographic characteristics

Characteristic	Glaucoma patients		Controls		Total
	Without dry eye	With dry eye	Without dry eye	With dry eye	Without dry eye	With dry eye
N (Respondents)	525	104	6,548	386	7,073	490
	Mean	Mean	Mean	Mean*	Mean	Mean*
Age (years)	66.7	68.2	65.1	67.3	65.2	67.5
	Frequency	Frequency	Frequency	Frequency*	Frequency	Frequency*
Sex, % female	58.7%	58.8%	52.6%	61.8%	53.1%	61.6%
Race
White	81.5%	72.7%	85.1%	86.2%	84.8%	85.2%
Black	14.3%	22.1%	9.6%	8.2%	9.9%	9.3%
Asian	2.2%	2.2%	3.3%	3.6%	3.2%	3.5%
Multiple races	1.6%	1.0%	1.2%	1.2%	1.2%	1.2%
Other	0.4%	1.9%	0.9%	0.8%	0.9%	0.9%

Notes:

* Indicates significant differences (P < 0.05): Glaucoma cohort: none. Controls with and without dry eye: age and gender. Total with and without dry eye: age and gender.

Table 2 Patients with glaucoma vs controls: Clinical characteristics

Characteristic (n)	Glaucoma patients		Controls		Total
	Without dry eye	With dry eye	Without dry eye	With dry eye	Without dry eye	With dry eye
Health status
Excellent	2.0%	3.3%	5.8%	2.9%	5.5%	3.0%
Very good	21.2%	15.9%	25.0%	20.8%	24.7%	20.4%
Good	37.3%	44.0%	38.0%	36.0%	37.9%	36.6%
Fair	28.0%	22.5%	20.9%	26.3%	21.4%	26.0%
Poor	8.4%	14.2%	6.7%	11.8%	6.8%	12.0%
Other (don’t know, not applicable)	3.1%	0.1%	3.6%	2.3%	3.6%	2.1%
Vision impairment
No impairment	72.5%	67.3%*	85.8%	73.3%*	84.8%	72.9%*
Some difficulty	16.7%	20.2%	9.5%	19.2%	10.0%	19.3%
Impaired near but not far	7.5%	5.9%	2.3%	5.5%	2.7%	5.5%
Impaired both near and far	1.6%	2.7%	0.3%	1.1%	0.4%	1.2%
Blind	1.3%	4.0%	0.8%	0.9%	0.9%	1.1%
Difficulty seeing with contacts/glasses, % yes	11.9%	13.1%	3.5%	8.6%*	4.1%	8.9%*
Presence of eye conditions (ICD-9 code)
Disorders of the globe (360)	1.2%	7.2%	1.4%	10.5%*	1.4%	10.3%*
Other retinal disorders (362)	5.9%	8.1%	2.0%	3.8%	2.2%	4.2%*
Cataract (366)	13.8%	39.5%	6.5%	45.5%*	7.0%	45.1%*
Disorders of refraction/accommodation (367)	2.0%	2.0%	3.4%	1.6%*	3.3%	1.6%*
Visual disturbances (368)	1.2%	2.1%	1.3%	5.5%	1.3%	5.2%*
Blindness and low vision (369)	1.3%	0.8%	0.7%	1.4%	0.8%	1.3%
Inflammation of eyelids (373)	0.3%	1.5%	0.3%	0.8%	0.3%	0.8%
Disorders of lacrimal system (375)	0.0%	15.8%	0.0%	20.7%	0.0%	20.5%
Disorders of optic nerve (377)	0.4%	1.1%	0.1%	0.2%	0.1%	0.3%
Other disorders of eye (379)	5.0%	10.6%	2.5%	10.4%*	2.7%	10.4%*
Presence of other chronic conditions
Hypertension (401)	47.9%	58.0%	47.2%	54.3%*	47.3%	54.6%*
Hypercholesterolemia (272)	26.6%	34.4%	33.6%	36.9%	33.0%	36.7%
Diabetes (250)	20.3%	27.7%	17.0%	25.0%*	17.3%	25.2%*

Notes:

* Indicates significant differences (P < 0.05): Glaucoma cohort: cataract. Controls with and without dry eye: vision impairment, difficulty seeing with contacts/glasses, disorders of the globe, cataract, disorders of refraction/accommodation, other disorders of the eye, hypertension, and diabetes. Total with and without dry eye: vision impairment, difficulty seeing with contacts/glasses, disorders of the globe, other retinal disorders, cataract, disorders of refraction/accommodation, visual disturbances, other disorders of the eye, hypertension, and diabetes.

Abbreviation: ICD-9, International Statistical Classification of Diseases and Related Health Problems.

Table 3 Medication use

Medication	Glaucoma patients
	Without dry eye	With dry eye
	Frequency^	Frequency^
IOP-lowering agents
Prostaglandin analogs	64.9%	53.4%
Beta blockers	36.9%	50.7%
Adrenergics	20.8%	28.5%
Combination products	16.7%	19.4%
Carbonic anhydrase Inhibitors	11.0%	14.8%
Miotics	2.0%	2.5%

Notes:

^ Total exceeds 100% as patients could report more than one agent.

Abbreviation: IOP, intraocular pressure.