 |
 62mm Multi Coated Glass UV Filter Fits 62 mm Lenses NEW $3.65 Time Remaining: 16d 3h 8m Buy It Now for only: $3.65 |
 Vintage Minolta Maxxam AF 70 210 f 4 Macro Beercan fits Sony Alpha DSLR $51.01 (4 Bids) Time Remaining: 5h 33m |
 Ricoh pentax PK fit lens xr rikenon 12 50 mm lens excellent condition see pic $55.29 Time Remaining: 48m |
 52mm Glass Multi Coated UV Filter fits 52 mm Lenses NEW $2.99 Time Remaining: 1d 50m Buy It Now for only: $2.99 |
 MINOLTA MAXXUM 35 80mm LENS Fits MaxxumSONY Digital $34.25 Time Remaining: 1h 6m Buy It Now for only: $37.75 |
 CANON Logo 58mm Front Lens Cap Film Digital Fits ALL Lens w 58mm Filter Threads $2.59 Time Remaining: 20d 1h 40m Buy It Now for only: $2.59 |
 MINOLTA MOUNT 2X TELEPHOTO CONVERTER Fits All Models $9.99 Time Remaining: 1h 6m Buy It Now for only: $12.99 |
 CARL ZEISS JENA DDR F35 LENS 135MM M42 SCREW FIT LOVELY CLEAN LENS WITH CAPS $77.41 (9 Bids) Time Remaining: 4h 38m |
 58 mm Multi Coated UV Filter Fits 58 mm Lenses NEW High Quality $1.29 Time Remaining: 18d 1h 31m Buy It Now for only: $1.29 |
 Kenlock lens pentax fit Mc tor mc 135 f200mm in excellent condition see pics $47.39 Time Remaining: 52m |
 52 mm Multi Coated UV Filter Fits 52 mm Lenses NEW High Definition $1.29 Time Remaining: 19d 18h 51m Buy It Now for only: $1.29 |
 Canon EF 28 135mm f 35 56 IS Zoom Lens w Macro feature Canon EF Fit $308.06 (5 Bids) Time Remaining: 2d 20h 22m |
 fit NIKON DSLRTAMRON AF ASPHERICAL LD IF 28 200mm 138 56 MACRO 371D $31.00 (5 Bids) Time Remaining: 1d 13h 36m |
 LENS CAP fit FUJI S4000 S4050 S3200 S3250 S3280 S3400 HD FINEPIX FUJIFILM+HOLDER $9.99 Time Remaining: 17d 6h 24m Buy It Now for only: $9.99 |
 Minolta AF 50mm f 17 lens fits Sony Alpha + FREE Maxxum 7000 body with flash $15.50 (3 Bids) Time Remaining: 1d 7h 31m |
 5x Rear Lens + 5x body cap fit for all Canon EOS lens $5.99 Time Remaining: 7d 14h 42m Buy It Now for only: $5.99 |
 Minolta Maxxum 50mm 17 AF f fits Konica Minolta Sony 4 3s film digital $50.00 (1 Bid) Time Remaining: 7h 55m |
 Wide Angle Lens 043x Prof Macro fits Nikon D5000 D3000 D60 D70 D90 $27.50 Time Remaining: 2h 3m |
 72 mm Multi Coated UV Filter Fits 72 mm Lenses NEW High Quality $1.29 Time Remaining: 18d 1h 32m Buy It Now for only: $1.29 |
 fit SONY a900a55MINOLTA AF ZOOM Xi 100 300mm 145 56 MAXXUM A330A350A380 $22.05 (4 Bids) Time Remaining: 2d 6h 8m |
 67 mm Multi Coated UV Filter Fits 67 mm Lenses NEW High Quality $1.29 Time Remaining: 18d 1h 31m Buy It Now for only: $1.29 |
 PENTAX K Mount 2X Teleconverter Fits ME K 1000 $12.99 Time Remaining: 1h 10m Buy It Now for only: $14.99 |
 Accura Diamatic auto wide angle 28mm 128 Nikon lens fits Nikon EM $0.99 (2 Bids) Time Remaining: 4h 34m |
 New 67mm Multi Coated Glass UV Filter Fits 67 mm Lenses $4.99 Time Remaining: 39m Buy It Now for only: $4.99 |
 SMC Pentax FA Zoom 80 160mm f 45 fit 645 645N 645D Pentax 80 160 f45 007673 $51.00 (5 Bids) Time Remaining: 4d 10h 8m |
 Rear lens cap fit for Sony E mount NEX 3 NEX 5 NEX 10 $1.50 Time Remaining: 17d 17h 8m Buy It Now for only: $1.50 |
 Summicron M 50mm f 2 Black + 12585 hood fit Leica M9 Summicron 50 F2 007424 $1,000.00 (9 Bids) Time Remaining: 4d 10h 8m Buy It Now for only: $1,850.00 |
 SIGMA 35 80MM F4 56 DL AF LENS CANON FIT $15.78 (1 Bid) Time Remaining: 21h 36m |
 62 mm Multi Coated UV Filter Fits 62 mm Lenses NEW High Quality $1.29 Time Remaining: 18d 1h 31m Buy It Now for only: $1.29 |
 MINT Summicron M 35mm F 2 ASPH Black Summicron 35 F2 M fit Leica M9 007403 $2,025.00 (10 Bids) Time Remaining: 4d 10h 8m Buy It Now for only: $2,880.00 |
 LENS CAP fit FUJI S4000 S4080 S3200 S3250 S3280 S3400 HD FINEPIX FUJIFILM+HOLDER $9.99 Time Remaining: 3d 20h 25m Buy It Now for only: $9.99 |
 Canon FL mount 50mm 114 f 14 FAST PRIME LENS fits FD 14 wide micro 4 3 $32.00 (3 Bids) Time Remaining: 2d 4h 40m |
 Canon EF 75 mm 300 mm F 40 56 III Lens With Hard Case Fits D50 60 and More $75.00 (1 Bid) Time Remaining: 2d 2h 49m |
 Olympus OM Zuiko Lens to Sony Alpha E mount Camera Adapter fit NEX 3 NEX 5 DC115 $11.72 Time Remaining: 29d 20h 6m Buy It Now for only: $11.72 |
 Minolta Chiyoko Kogaku Super Rokkor 5cm 50mm f 2 fit Leica screw LTM L39 $113.50 (9 Bids) Time Remaining: 1d 23h 34m |
 67mm Front Lens Cap Snap on Cover Protector Fit For Canon Nikon Sony $2.69 Time Remaining: 29d 12h 44m Buy It Now for only: $2.69 |
 Nikon Nikkor 50mm 118 35mm Camera Lens fits Nikon Mint Condition $9.34 (1 Bid) Time Remaining: 4d 4h 21m |
 Canon EF 35 mm 80 mm f 40 56 III Lens FITS ALL AF SLR DSLR DIGITAL CAMERAS $0.99 Time Remaining: 4d 5h 34m |
 LEICA M 42 PUSH ON LENS CAP FITS 39MM FRONT $6.95 Time Remaining: 16d 21h 48m Buy It Now for only: $6.95 |
 PHOENIX 08X WIDE ANGLE LENS fits Canon PS S 30 40 45 50 NEW in Box $19.95 Time Remaining: 2h 13m |
 WIDE TELEPHOTO LENS FITS CANON PowerShot SX10 IS $37.70 Time Remaining: 18d 6h 57m Buy It Now for only: $37.70 |
 Canon USA Normal EF 50mm f 12L USM Autofocus Camera Lens Fits 5D MKII MKIII $1,280.00 (8 Bids) Time Remaining: 3d 5h 48m |
 Canon USA EF 100mm f 28L Macro IS USM Camera Lens Fits 5D MKII MKIII Mark III $832.00 (3 Bids) Time Remaining: 3d 5h 53m |
 25X TELEPHOTO LENS 58mm fits with your adapterCANON SX30IS SX20IS SX10IS SX1IS $24.75 Time Remaining: 17d 2h 14m Buy It Now for only: $24.75 |
 28mm f28 M42 LENS FITS CANON EOS PENTAX K GREAT ITEM $36.34 (14 Bids) Time Remaining: 22h 43m |
 305mm Metal Felt Generic Pressure Fit Lens Cap 305 Push on VINTAGE V147 $4.79 Time Remaining: 21d 11h 29m Buy It Now for only: $4.79 |
 Minolta AF 35 70mm f 4 Mini Beercan zoom lens fits Konica Minolta Sony Alpha $9.99 (1 Bid) Time Remaining: 5d 7h 20m |
 Sigma DC 18mm 125mm F35 56 Auto Focus Lens Nikon F Fit $18.17 (3 Bids) Time Remaining: 4d 28m |
 67mm 8 point star filter fit CANON NIKON Lens $12.50 Time Remaining: 1d 5h 32m Buy It Now for only: $12.50 |
 LEITZ LEICA 35MM F35 SUMMARON SCREW MOUNT MINT CONDITION ALSO FITS CANON SM $237.50 (5 Bids) Time Remaining: 4d 2h 17m |
 58mm UV Clear Filter Lens Protection FIT CANON 58 mm $3.50 Time Remaining: 27d 15h 48m Buy It Now for only: $3.50 |
 500mm F 8 Mirror Lens Nikon fit Macro Cambron 750mm Lens On Digital Camera $41.07 (13 Bids) Time Remaining: 4d 30m |
 Voigtlander HELIAR Classic 50mm f 2 fit Leica M mount RF Rangefinder lens $177.50 (8 Bids) Time Remaining: 1d 23h 34m |
 Generic 54mm Plastic Pressure Fit Lens Cap 54 Push on USED V186 $2.99 Time Remaining: 26d 10h 52m Buy It Now for only: $2.99 |
 TESTED Excellent Carl Zeiss Jena DDR 50mm f28 Tessar M42 fit Canon EOS NEX 4 3 $23.70 (5 Bids) Time Remaining: 3d 23h 33m |
 KIRON 70 210MM F4 MACRO 14 MC PENTAX PK FIT ZOOM LENS NICE CONDITION $61.99 Time Remaining: 28d 8h 21m Buy It Now for only: $61.99 |
 NIKON non AI fit VIVITAR 28mm F25 manual focus wide angle lens Ex cond $60.00 Time Remaining: 2d 20h 3m Buy It Now for only: $85.00 |
 WIDE MACRO 28 LENS Fits Nikomat Nikon 35mm Camera Lens in Box w Caps $14.95 Time Remaining: 6h 11m |
 62mm UV filter Protective Fit Tamron 62 mm lens $5.98 Time Remaining: 4d 16h 46m Buy It Now for only: $5.98 |
 Tamron MC7 Mx AF 2x converter teleconverter BBAR for Minolta or Sony fit $1.25 (2 Bids) Time Remaining: 3d 20h 31m |
 Minolta AF 50mm f 17 Prime Lens Fit Sony Alpha Digital Camera $89.95 Time Remaining: 1d 6h 13m Buy It Now for only: $89.95 |
 PHOENIX Canon S Series LENS ADAPTER fits Canon PS S 30 40 45 50 NEW in Box $9.95 Time Remaining: 2h 13m |
 ONE TOUCH MACRO 75 200 45 LEN Fits Nikomat Nikon 35mm Camera In Box W Caps $27.50 Time Remaining: 5h 17m |
 LENS CAP fits DIRECTLY to CAMERA SONY DSC HX100V HX 100V DSCHX100V +HOLDER $9.99 Time Remaining: 2d 4h 58m Buy It Now for only: $9.99 |
 TESTED SUPERB Optomax 28mm 28 wide angle lens M42 fits Canon EOS NEX Micro 4 3 $15.78 Time Remaining: 4d 13m |
 50mm Plastic Pressure Fit Lens Cap 50 Push on Generic USED V137 $3.79 Time Remaining: 21d 10h 54m Buy It Now for only: $3.79 |
 Minolta M Rokkor 28mm f 28 Leica M mount fit CLE CL R3A M6 Wide Angle lens $165.50 (4 Bids) Time Remaining: 3d 23h 43m |
 Minolta Super Rokkor 45cm 45mm f 28 fit Leica screw LTM $11.50 (2 Bids) Time Remaining: 3d 23h 53m |
 TAMRON AF 70 300mm f4 56 Di LD Macro CANON FIT $157.96 Time Remaining: 18d 19h 6m Buy It Now for only: $157.96 |
 Carl Zeiss Jena Pancolar f18 50mm Lens M42 Screw Fit $42.04 (11 Bids) Time Remaining: 3d 17h 47m |
 Aires 457mm Metal Felt Pressure Fit Lens Cap 457 Push on VINTAGE V118 $9.99 Time Remaining: 20d 45m Buy It Now for only: $9.99 |
 MINOLTA MAXXUM AF 50mm f17 PRIME LENS fits SONY ALPHANICE $23.19 (5 Bids) Time Remaining: 5d 5h 33m |
 Minolta Maxxum 7000 Body WITH 70 210 f 4 Beercan AF Lens also fits Sony DSLR $30.85 (4 Bids) Time Remaining: 3d 6h 18m |
 Adapter KP A N For Russian lens with index A fit to Nikon F D90 D7000 Kiev $19.99 Time Remaining: 5d 2h 3m Buy It Now for only: $19.99 |
 Leica Leitz Summicron R 12 90MM Lens Near Mint Condition Fits Leicaflex SL $404.00 (2 Bids) Time Remaining: 5d 6h 18m |
 52mm Fisheye Wide Angle 042X + Macro fits Canon 50mm f18 lens Japan made NEW $33.95 Time Remaining: 9d 12h 29m Buy It Now for only: $33.95 |
 TESTED Excellent Pentacon 50mm f18 lens M42 fits Canon EOS Sony NEX 4 3 DSLR $18.17 (2 Bids) Time Remaining: 3d 23h 19m |
 Sankyo Koki Komura 105mm f 2 fit Nikon F mount $81.00 (22 Bids) Time Remaining: 1d 23h 34m |
 Genuine ASAHI PENTAX PK A PLASTIC REAR LENS CAP to fit Film or Digital SLR $4.95 Time Remaining: 29d 22h 26m Buy It Now for only: $4.95 |
 Sigma 28 70mm 128 4 DG Zoom Lens Fits Nikon $9.99 Time Remaining: 5d 6h 34m |
 Leica Summilux M 50mm f 14 Chrome + 12521 hood Summilux M f14 fit M9 007620 $1,950.00 Time Remaining: 29d 14h 10m Buy It Now for only: $1,950.00 |
 Tamron SP 500mm Mirror Lens + Adaptall 2 Fitting + Filters + Case Pentax K Nice $112.15 (11 Bids) Time Remaining: 23h 41m |
 Nikon 14 24 mm 28 G lens fits D3S D700 D800 D4 $1,282.61 (4 Bids) Time Remaining: 4d 1h 35m |
 Pixco 20X High Definition Tele Converter 52mm 2x Fit Telephoto Lens H247 $19.00 Time Remaining: 14h 18m Buy It Now for only: $19.00 |
 MINOLTA 75 150MM F4 MD FIT ZOOM LENS $7.88 (1 Bid) Time Remaining: 2d 38m |
 Rare Spiratone Telephoto YS 135mm f 18 fit Nikon F 135 F18 135 18 007822 $1,080.00 Time Remaining: 29d 14h Buy It Now for only: $1,080.00 |
 Mitakon MC zoom 145 f80 200mm Nikon lens fits Nikon EM $0.99 Time Remaining: 4h 43m |
 TAMRON CF TELE MACRO 80 210MM F38 ZOOM LENS MINOLTA MD FIT INCLUDES ADAPTALL2 $47.38 Time Remaining: 2h 24m |
 OLYMPUS OM fit SIGMA 70 210mm f4 56 lens Works but Read Description $17.99 Time Remaining: 28d 10h 56m Buy It Now for only: $17.99 |
 Canon 50mm f 18 Chrome Type 1 for II III IV series also fit Leica screw LTM L39 $72.00 (9 Bids) Time Remaining: 3d 23h 33m |
 77mm Front Lens Cap Snap on Cover Protector Fit For Canon Nikon Sony $2.64 Time Remaining: 29d 12h 38m Buy It Now for only: $2.64 |
 Tokina RMC 25 50mm F4 lens P K fit Wide Lens $39.99 Time Remaining: 5d 5h 4m Buy It Now for only: $49.99 |
 Super Takumar Asahi 55mm f2 Pentax M42 Screw Fit Lens $6.97 (5 Bids) Time Remaining: 3d 17h 8m |
 Rear Lens Cover + Camera Body Cap Fit Nikon DSLR L6B $2.49 Time Remaining: 26d 7h 56m Buy It Now for only: $2.49 |
 CANON 35mm f 28 FD Mount fit SOLIGOR LENS 4 PentaxCanonNikon 4 3 with Adap $149.00 Time Remaining: 6h 24m Buy It Now for only: $165.00 |
 Olympus PEN F FT 38mm f 18 lens zuiko fit NEX 3 5 5N 7 m4 3 E PL3 P2 P3 camera $270.00 Time Remaining: 28d 1h 13m Buy It Now for only: $270.00 |
 Fujifilm Fujica Fuji 100mm f35 fit G690 BL G 690 BL Body $9.99 Time Remaining: 3d 23h 48m |
 Cosina Cosinon Auto 55mm f 14 M42 Screw Fit Lens $42.65 (7 Bids) Time Remaining: 2d 13h 51m |
 38mm Metal Felt Generic Pressure Fit Lens Cap 38 Push on VINTAGE V145 $4.99 Time Remaining: 21d 11h 29m Buy It Now for only: $4.99 |
 Photax Paragon M42 300 600 1000mm Tele Lens to fit DIGI Canon EOS 10 20 400D $56.87 (4 Bids) Time Remaining: 4d 1h 11m |
Contact Lens Examinations: What You Need To Know
Contact lens examinations take longer and require more tests than a regular eye exam. If you wish to try contact lenses you need to inform your eye care professional's office when you book the appointment so enough time can be reserved for the contact lens fitting. The average exam takes about 90 minutes.
There are three main parts to your contact lens exam and fitting:
- Consultation
- Examination
- Contact lens fitting and instruction
Consultation
When you first enter the office your eye doctor will ask a number of questions regarding your lifestyle, current eye health and contact lens preferences. These questions will help your eye doctor to determine if contact lenses are right for you and also what kind of contact lenses would be the best fit.
Examination
Next your eye doctor will perform a routine eye exam.
Your eye doctor will shine a light into your eyes in order to observe the eye structure and how well your eye muscles function. A visual acuity test will be given to rate how well you can see the letters and numbers on a standard eye chart. Drops may be put in your eyes and other basic tests performed to determine if you need corrective lenses and what your prescription strength would be.
Contact Lens Examination
The curvature, size and shape of your eyes are unique and so measurements need to be taken in order to determine the correct fit for your contact lenses. If contact lenses are not fitted properly they can cause discomfort and even eye damage.
- The eye doctor will use an instrument called a keratometer (a type of digital camera) to measure the curvature of your cornea. Normally you sit facing the instrument with your chin in a brace (so you can't move) while the keratometer photographs your eye. The measurements it takes are calculated mathematically to determine the correct size and curve for your contact lenses. Another method called corneal topography may be used to provide precise details of your eye to your eye doctor.
- Next your eyes pupil and iris size are measured using a ruler, pupil card or pupillometer.
- A biomicroscope will be used to evaluate the health of your cornea and also to check the fit of your trial contact lenses.
- A tear film evaluation may also be performed to check the moisture in your eye. This can be done by inserting a small strip of paper under the lower eyelid or by placing fluorescein dye in your eyes and seeing how long it takes for your tears to remove it. This test determines if you have issues with dry eye. If you have severe dry eye you may not be able to wear contact lenses or you may need special contact lenses.
Contact Lens Fitting and Instructions
Finally after your tests are complete, trial contact lenses will be fitted. You will need to wait 10-15 minutes for your eyes to settle down before the eye doctor can determine if the fit is correct. You may also need to try on more than one pair before you find just the right ones for you.
During the fitting your eye doctor will teach you how to insert and remove your contact lenses. They will discuss proper cleaning and maintenance routines and will give you written instructions to follow when you get home.
Follow-up exams will be scheduled to check on your progress with your new contact lenses. If you notice any vision changes, discomfort or problems you should contact your eye care professional immediately.
About the Author
Shop online when looking for contact lenses, Halloween lenses and special effects lenses. Providing the widest selection of contacts at huge savings when compared to retail prices.
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