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Fundus evaluationBY

Renu Thakur

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Direct ophthalmoscope

Indirect ophthalmoscope

Hruby lens

+60 Dsph lens

Fundus camera

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Direct ophthalmoscope To evaluate undus

 The main t!o parts are illumination

" tun#sten lamp$% vie!in# system

  &bservin# system '( si#ht hole )prism)ocusin# lens)*lters

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8/19/2019 Fundus Examination is good for ocular health,and doing routine check up

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Focusin# lens

*lters

,i#ht hole is havin# -mm aperture

.a#ni*cation'(/1 to /21

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3arameter a4ects re5e

 The an#le bet!een illumination %vie!in# ais

 The distance bet!een patient %observer

,i7e o aperture % illumination

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8/19/2019 Fundus Examination is good for ocular health,and doing routine check up

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Clinical procedure

Instruction to patient"ocusin#$

8ccommodation should be relaed

Ri#ht eye"observer$ !ith ri#ht eye

"patient$9et eye "observer$ !ith let eye"patient$

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8/19/2019 Fundus Examination is good for ocular health,and doing routine check up

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8/19/2019 Fundus Examination is good for ocular health,and doing routine check up

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Indirect ophthalmoscope.onocular indirectophthalmoscope

Binocular indirect ophthalmoscope

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.onocular indirect ophthalmoscopeHand held instrument

9i#ht + patients pupil:ima#e ormedby patient retina "illumination iscontrolled by the iris diaphra#m $

;ondensin# lens "plus aspheric lens$

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8/19/2019 Fundus Examination is good for ocular health,and doing routine check up

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.a#ni*cation'(

 Total po!er o eye

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8/19/2019 Fundus Examination is good for ocular health,and doing routine check up

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Indirect ophthalmoscope/2?0 schepens

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Head mounted binocular

;ondensin# lens"ma#ni*cationdecreases !ith incensin# po!er incondensin# lens$

,tereoscopic vie! % all @uadrant othe retina is visible

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8/19/2019 Fundus Examination is good for ocular health,and doing routine check up

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9i#ht re5ected A patient eye :ima#e is ormed at ocal len#th o

condensin# lens : ima#e bet!eenthe condensin# lens and eyepiece

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8/19/2019 Fundus Examination is good for ocular health,and doing routine check up

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3rocedure3atient instruction

Dilatation o pupil

I3D adustment o binoculars

3osition o condensin# lens

,cleral indentator

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Indication % contra indication

8dvanta#e and disadvanta#e

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Hruby lens;olenbrander /26C

(60Dsph lens mounted on slit lamp

Distance bet!een lens % patient eye is

less

(6000 ne#ate the human eye po!er

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.a#ni*cation oslit lamp is /6 ormore than that

It #ive binocularvie!

,tereoscopic vie!

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3rocedure

8dvanta#e

Disadvanta#e

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ie! throu#h Hruby lens

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+60 % +20 Dsph lens=I Bayadi in /2-

Binocular vie!

Bispheric lens

Re@uired lon# !orkin# distance

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3rocedure

8dvanta#es % disadvanta#es

 

Undilated Pupil Dilated Pupil

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8/19/2019 Fundus Examination is good for ocular health,and doing routine check up

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Interpretation8erial ima#e is ormed

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Fundus camera

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8/19/2019 Fundus Examination is good for ocular health,and doing routine check up

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8/19/2019 Fundus Examination is good for ocular health,and doing routine check up

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8/19/2019 Fundus Examination is good for ocular health,and doing routine check up

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8/19/2019 Fundus Examination is good for ocular health,and doing routine check up

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,tand mounted indirectophthalmoscope

 T!o li#ht source are presenttun#sten or retinal ima#es % 5ash

li#ht source or photo#raph

 t!o li#ht source combined by semire5ectin# surace

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diaphragm

Illuminated patch on

 patient retina

F.M

,ophthalmoscope lens

At plane

 patients pupil

Fundus image

 between F.M,ophthalmoscope lens

Light

View

Compoundmicroscope

Film =

Flip mirror 

G.G.S

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3rocedure

Interpretation

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8/19/2019 Fundus Examination is good for ocular health,and doing routine check up

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8/19/2019 Fundus Examination is good for ocular health,and doing routine check up

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8/19/2019 Fundus Examination is good for ocular health,and doing routine check up

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