PMID- 8944191
OWN - NLM
STAT- MEDLINE
DCOM- 19961220
LR  - 20061107
IS  - 0275-5408 (Print)
IS  - 0275-5408 (Linking)
VI  - 16
IP  - 6
DP  - 1996 Nov
TI  - Low contrast letter acuity in age-related maculopathy.
PG  - 455-9
AB  - Distance low contrast letter acuity (LCLA) was assessed in six subjects with 
      age-related maculopathy (ARM) and 12 subjects with normal visual function using a 
      series of eight Regan charts ranging in contrast from 4% to 96%. Mean logMAR 
      acuities for letters of 96% contrast were -0.205, -0.053 and 0.748 for the young 
      control group (mean 23.3 years), the age-matched control group (mean 70.3 years) 
      and the ARM subjects (mean 72.3 years), respectively. The LCLA function was found 
      to be significantly better for the six in the young control group compared with 
      the six age-matched controls (P < 0.05). The ARM subjects performed significantly 
      poorer (P < 0.05) at each contrast level down to 20% compared with the 
      age-matched subjects. A constant 0.8 logMAR difference was found between the LCLA 
      function of the age-matched controls and that of the ARM subjects. These results 
      show that, since the low contrast test charts revealed similar differences in 
      visual acuity between the ARM and the age-matched groups, the use of low contrast 
      letter charts do not appear to give any additional information of acuity loss.
FAU - Abadi, R V
AU  - Abadi RV
AD  - Department of Optometry and Vision Sciences, UMIST, Manchester, UK.
FAU - Pantazidou, M
AU  - Pantazidou M
LA  - eng
PT  - Clinical Trial
PT  - Controlled Clinical Trial
PT  - Journal Article
PL  - England
TA  - Ophthalmic Physiol Opt
JT  - Ophthalmic & physiological optics : the journal of the British College of 
      Ophthalmic Opticians (Optometrists)
JID - 8208839
SB  - IM
MH  - Adult
MH  - Aged
MH  - Aged, 80 and over
MH  - Aging/physiology
MH  - *Contrast Sensitivity
MH  - Humans
MH  - Macular Degeneration/*diagnosis/psychology
MH  - Middle Aged
MH  - Vision Tests/*methods
EDAT- 1996/11/01 00:00
MHDA- 1996/11/01 00:01
CRDT- 1996/11/01 00:00
PHST- 1996/11/01 00:00 [pubmed]
PHST- 1996/11/01 00:01 [medline]
PHST- 1996/11/01 00:00 [entrez]
AID - 0275540896000129 [pii]
PST - ppublish
SO  - Ophthalmic Physiol Opt. 1996 Nov;16(6):455-9.