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Table 2 Risk factors, presentation, clinical features and laboratory diagnosis of keratitis

From: Specific detection of fungal pathogens by 18S rRNA gene PCR in microbial keratitis

Patient No

Trauma

Contact lens

Size of lesion (mm)

Margin

Dry texture

Satellite

Conj. Inj

AC rx

Hypopyon

Gram stain

Culture

PCR

DNA Sequencing (%)a

1

Veg FB

No

8 × 6

Feathery

Yes

No

Yes

Yes

Yes

Hyphae

Fusarium sp.

+

Fusarium solani (97%)

2

Non-veg FB

No

8 × 8

Feathery

Yes

Yes

Yes

Yes

Yes

Hyphae

Fusarium sp.

+

Cladosporium sp. (98%)

3

No

No

3 × 4

Feathery

No

Yes

Yes

Yes

Yes

Hyphae

Fusarium sp.

+

Fusarium sp. (97%)

4

Non-veg FB

No

3 × 2

Feathery

Yes

No

Yes

Yes

Yes

Hyphae

Fusarium sp.

+

Fusarium solani (97%)

5

No

No

9 × 9

No

No

Yes

Yes

Yes

Yes

Hyphae

Fusarium sp.

+

Fusarium solani (99%)

6

Veg FB

No

1 × 2

No

No

No

Yes

Yes

No

Hyphae

No growth

+

Aspergillus flavus (96%)

7

Non-veg FB

No

1 × 1

No

No

No

Yes

Yes

No

Hyphae

No growth

+

Trichosporon asahii (95%)

8

No

No

3 × 5

Feathery

Yes

No

Yes

Yes

No

Hyphae

No growth

+

Fusarium solani (87%)

9

No

No

7 × 6

Feathery

Yes

No

Yes

Yes

Yes

Hyphae

Fusarium sp.

+

Glomerella cingulata (98%)

10

Non-veg FB

No

4 × 5

Feathery

No

Yes

Yes

Yes

No

No organism

Fusarium sp.

+

Fusarium sp. (97%)

11

Veg FB

No

9 × 9

No

No

No

Yes

Yes

Yes

GNB

P. aeruginosa

No

ND

12

No

Yes

2 × 2

No

No

No

Yes

Yes

Yes

GNB

P. aeruginosa

No

ND

13

Veg FB

No

6 × 5

No

No

No

Yes

Yes

Yes

GNB

P. aeruginosa

No

ND

14

No

Yes

4 × 3

No

No

No

Yes

Yes

Yes

No organism

P. aeruginosa

No

ND

15

No

No

10 × 10

Melt

Melt

Melt

Yes

Yes

Yes

No organism

No growth

No

ND

16

Veg FB

No

2 × 3

No

Yes

No

Yes

Yes

Yes

GPC

S. aureus

No

ND

17

No

Yes

5 × 4

Feathery

Yes

No

Yes

Yes

Yes

No organism

P. aeruginosa

No

ND

18

Non-veg FB

No

2 × 2

No

No

No

Yes

Yes

No

GPC

S. pneumoniae

No

ND

19

Non-veg FB

No

8 × 6

Feathery

Yes

No

Yes

Yes

Yes

No organism

No growth

No

ND

20

Veg FB

No

7 × 7

Melt

Melt

Melt

Yes

Yes

Yes

No organism

No growth

No

ND

21

No

Yes

3 × 3

No

No

No

Yes

Yes

No

No organism

P. aeruginosa

No

ND

22

No

No

8 × 8

No

No

No

Yes

Yes

Yes

GPC

Group A Streptococci

No

ND

23

Veg FB

No

2 × 1

No

No

No

Yes

Yes

Yes

No organism

No growth

No

ND

24

Non-veg FB

No

2 × 3

Feathery

No

Yes

Yes

Yes

Yes

No organism

No growth

No

ND

25

No

No

1 × 1

No

No

No

Yes

Yes

No

No organism

No growth

No

ND

26

No

No

1 × 1

No

No

No

Yes

Yes

No

No organism

No growth

No

ND

27

Veg FB

No

2 × 2

No

Yes

Yes

Yes

Yes

No

No organism

No growth

No

ND

28

Non-veg FB

No

2 × 3

No

No

No

Yes

Yes

No

No organism

No growth

+

Fusarium sp. (97%)

29

No

Yes

2 × 2

No

No

No

Yes

No

No

No organism

P. aeruginosa

No

ND

30

Veg FB

No

4 × 2

Feathery

Yes

Yes

Yes

Yes

No

No organism

Fungus NS

No

ND

  1. Veg FB – Vegetative foreign body, Conj. Inj. – Conjunctival injection, AC rx – Anterior chamber reaction, GNB – Gram negative bacillus, GPC – Gram Positive cocci, NS -Non sporulating fungus and ND – Not done.
  2. a Percentage similarity in BLAST analysis of the DNA sequence