Table 3. Comparison of STDR, NSTDR, visual impairment, and blindness during the pre-COVID period, lockdown (phase 1-4), and unlocking (phase 1-10) for fresh and follow-up diabetic retinopathy patients.

NPDR: non-proliferative diabetic retinopathy; STDR: sight-threatening diabetic retinopathy

Patient details		n	%	Pre-COVID-19	%	Lockdown (phase 1-4)	%	Unlock (phase 1-10)	%	p-Value
Fresh patients	STDR	10,914	79	6020	78%	256	71	4638	80%	0.25
	NSTDR	5708	77	3554	77%	73	76	2081	77%	0.90
Visual impairment	Mild/No	6513	39	4062	42	119	36	2332	35	0.14
	Moderate	3731	22	2135	22	63	19	1533	23	0.27
	Severe	1631	10	902	9	30	9	699	10	0.86
	Blindness	3890	23	2004	21	99	30	1787	27	0.001
Follow-up patients	STDR	2961	21	1677	22	104	29	1180	20	0.013
	NSTDR	1688	23	1034	23	23	24	631	23	0.79
Visual impairment	Mild/No	2570	55	1556	57	58	46	956	53	0.15
	Moderate	604	13	362	13	12	9	230	13	0.25
	Severe	274	6	161	6	5	4	108	6	0.37
	Blindness	1017	22	543	20	45	35	429	24	0.001