Table 5.

Median central retinal thickness (CRT), optical coherence tomography (OCT) atrophy area (AA) and age for patients homozygous for ABCA4 c.4539 + 2028C > T and who carry ABCA4 c.4539 + 2028C > T in trans with a null or null-like variant, mild variants in trans with a null or null-like variant and intermediate in trans with a null or null-like variant.

Genotype	Median CRT (microns)	Median OCT AA horizontal width (microns)	Median age (years)	Sample size
c.4539 + 2028C > T Homozygotes	164.5 (R:73–256)	2401.6 (R:2182–2621)	47.5 (R:37–58)	2
c.4539 + 2028C > T + null/null-like	122 (R:72–164)	3908 (R:1064–4919)	36.5 (R:21–60)	4
Mild + null/null-like	124 (R:87–195)	2480 (R:1470–6000)	33 (R:13–54)	5
Intermediate + null/null-like	116(R:83–127)	5444 (R:1933–6000)	38.5 (R:17–50)	9

R range.