## Classic [myopia]

### @Jankonyex

This is the original [myopia] puzzle by @Jankonyex

W=16x14&LI-L=m7m17m3m10m10m1m11m8m2m2m8m35m16m21m8m20m5m2m4m4m17m1m2m1&LI-U=m7m9m8m3m10m11m11m8m4m17m5m3m9m14m7m4m6m23m9m7m4m5m10m10m3m5m6&LI-R=m8m8m10m1m1m33m9m9m9m5m3m9m14m7m8m2m15m17m7m19m13m11&LI-D=m4m4m35m18m8m1m9m35m16m4m5m12m28m7m4m14m3m4m3m1m3&G=myopia&A=Jankonyex

### site.author
W=7x7&LI-L=m8m20m3m2m8&LI-U=m11m17m5&LI-R=m3m5m9m7m9m10&LI-D=m11m30m5&SSE=54DLDRRDDDDLULLDLLLUUURDDRURUUULULLURRRRDR&G=myopia&A=Pedro&D=2023-07-24&N=172

### @DireKrow
A fantastic set shared by @direkrow to mark the occasion of his [puzz.link implementation|puzz.link/myopia].

W=8x8&LI-L=m13m2m3m15m17&LI-U=m3m10m2m3m17m13m14&LI-R=m1m2m25m2m5m10m3m12m2&LI-D=m1m27m2m3m12m5m10&G=myopia&A=DireKrow&D=2023-08-08&F=3&N=1&T=Myopia
W=9x9&LI-L=m5m25m1m3m9m7m12m4m5m4&LI-U=m0m11m6m1m13m3m9m7m13m3m9m2&LI-R=m0m5m12m1m11m1m17m3m27&LI-D=m5m6m6m12m18m3m12m1m8m6&G=myopia&A=DireKrow&D=2023-08-08&F=3&N=2&T=Myopia
W=10x10&LI-L=m11m21m17m5m14m13m11m3&LI-U=m8m3m5m9m15m5m9m9m13m5m11m3&LI-R=m3m5m8m9m20m9m9m5m8m13&LI-D=m3m8m5m16m8m9m5m14m21m6&G=myopia&A=DireKrow&D=2023-08-08&F=3&N=3&T=Myopia


### @Rubrica

A big set shared by @rubrica at the same ocasion:

W=7x7&LI-L=m4m9m1m3m14m3m1m9m2&LI-U=m2m12m20m1m9&LI-R=m2m2m10m3m11m3&LI-D=m2m2m9m7m8m3m3&G=myopia&A=Rubrica&D=07/07/2023
W=10x10&LI-L=m11m3m5m8m14m12m8m13m6m5&LI-U=m14m13m11m8m7m5m14m8m5m3&LI-R=m14m5m6m28m5m3m11m2m14&LI-D=m11m3m5m6m5m8m3m12m8m8m3m8&G=myopia&A=Rubrica&D=07/07/2023
W=18x10&LI-L=m3m16m3m5m14m19m3m3m3m15m1m13m15m6m5m1m13m6m1m7m5m16&LI-U=m6m4m12m5m7m1m31m15m4m3m3m4m21m15m14m7m5m3m16&LI-R=m10m9m3m5m8m6m13m1m33m6m1m3m18m3m5m1m19m8m5m12m7&LI-D=m3m16m3m5m8m6m7m21m15m7m3m4m12m9m5m7m21m5m3m9m4&G=myopia&A=Rubrica&D=07/07/2023


### @AnuragSahay

A two-puzzle set was kindly sent by @AnuragSahay:

W=8x8&L-D=m9m3m2m35m2&L-L=m12m2m13m3m3m18m3m8&L-R=m9m3m18m3m3m13&L-U=m1m11m2m13m9m18&G=myopia&A=Anurag_Sahay&D=2024-03-11&F=2&T=Symmetric_eyes
W=10x10&L-D=m6m21m3m4m4m11m1m11m4m4m6m2m9m12&L-L=m11m2m25m11m12m4m4m6m18&L-R=m1m10m2m31m17m8m8m5m4m7m5&L-U=m1m5m11m2m5m3m3m4m27m14m18&G=myopia&A=Anurag_Sahay&D=2024-03-11&F=3

### @PinkHoodie
	
W=10x10&L-AD=m9m11m7m2m5m14m10&L-AL=m3m2m2m4m3m27m9m12m3m6&L-AR=m0m16m58m9m4m9m2&L-AU=m21m4m3m31m19m14&SSE=59URULLLLURRURRDRRDDRDDRUUUUUUULLDLULLLDLLLLDDDDDDDRDDRRRUUULDLUURRR&G=myopia&A=PinkHoodie&D=2024-11-09&F=3&T=Striked_Garlic
W=7x7&L-D=M2M5M5M4M6M2M8M4M4M5M3&L-L=M2M5M5M4M6M2M8M4M4M5M3&L-R=M2M5M5M4M6M2M8M4M4M5M3&L-U=M2M5M5M4M6M2M8M4M4M5M3&SSE=37RDLU&G=myopia&A=PinkHoodie&D=2024-04-01&F=1&O=Hyperopia&T=Jeists
W=7x7&L-D=M6M4M1M9M11M1M2m14&L-U=m0M3m11m2m1m5m4m2m9M1m4M3&SSE=45LDLLULDDLUUUURDRURDRURDRRDDDLLUU&G=myopia&A=PinkHoodie&D=2024-04-01&F=1&O=Myopia+Hyperopia&T=Miuisa


## Variants

In addition to classic [myopia], this page contains the following [myopia] variants:

VARIANT							MEANING
[#Hyperopia] 					(included in default rule panels)
[#Full Myopia] 					visit all cells
[#Unequal Lengths Myopia]		no two consecutive segments share the same length
[#Elimination]					one of the arrows can be eliminated
[#hex]							using the hex grid

### Hyperopia

This first set of Hyperopia Puzzles was made by @BenWoodley.
Prior to this, //Hypermetropic pentopia// had been made as a pentopia variant that uses a similar type of clue inversion [not counting infinity as a valid distance (p.8) |https://logicmastersindia.com/lmitests/dl.asp?attachmentid=438&view=1].

W=6x6&LI-L=M12M8M3M5&LI-U=M12M3M13M2&LI-R=M5M2M5M8&LI-D=M5M10&G=myopia&A=Ben_Woodley_(Rubrica)&D=2022-12-17&T=Hyperopia_Example
W=7x7&LI-L=M18M8M2M4M15&LI-U=M18M10M19&LI-R=M2M26M4&LI-D=M16M8M19&G=myopia&A=Ben_Woodley_(Rubrica)&D=2022-12-14&T=Hyperopia_1
W=10x10&LI-L=M11M11M5M27M12M6M9&LI-U=M7M4M5M6M11M21M29M5M4&LI-R=M7M4M5M2M15M12M21M11M4M7&LI-D=M7M4M11M23M21M6M5M11M4&G=myopia&A=Ben_Woodley_(Rubrica)&D=2022-12-17&O=Variant:_An_even_number_of_cells_in_each_row_and_in_each_column_must_be_inside_the_loop.&T=Hyperopia_2_(Even_Rows_and_Columns)


A couple more by site.author, even mixing both arrow types:
W=5x5&LI-L=M0M3M9&LI-U=M13M3&LI-R=M5M4M1M2&LI-D=M0&G=myopia&A=Pedro&D=2023-08-07&F=2&N=179&T=Hyperopia_only
W=5x4&LI-L=m2m14M2&LI-U=m16M2&LI-R=M9&LI-D=m9&SSE=13RDRRUULLLLLDDDDRRRULLURU&G=myopia&A=Pedro&D=2023-01-11&T=Mixed


### ´´unequal-lengths´´

V=unequal-lengths

These puzzles use the //unequal lengths// [variant] -- no two consecutive segments share the same length

W=9x9&LI-L=m2m4m20m28m20m4&LI-U=m22m36&LI-R=m18m8m12m4m12m8&LI-D=m2m24m12m4m12m24&V=unequal-length&A=dohz&D=2022-08-30&G=myopia
W=4x4&LI-U=m6m3&LI-R=m9&LI-D=m9&SSE=10LLUUURRRRDDDLL&V=unequal-length&A=Pedro&D=2022-10-09&K=dohz&T=Example&G=myopia


### ´´full´´

V=full

This puzzle use the //full// [variant] -- the loop must visit every dot.

W=7x7&LI-L=m0m8m5m17m4m9&LI-U=m10m20m10&LI-R=m8m5m6m11m4m6m3&LI-D=m0m8m5m17&SSE=58UUUUULLDRDDDLUULLURULLDLULDDDRURDRRDLLDDLUULDDDRRRUURDDRUURDDRUU&V=full&A=Pedro&D=2022-09-10&F=3&N=113&T=Tetrapod&G=myopia


### ´´elimination´´
V=elimination

W=6x6&L-D=m1m2m3m2m2m3m7m2m3m5m2&L-L=m3m3m2m5m4m1m4m8m2&L-R=m1m9m3m4m1m2m2m3m5&L-U=m1m2m3m2m2m7m1m2m5m5m2&SSE=48LLLLDDLLDDRDDRRURRDRUULLULURURDDRUUU&V=elimination&G=myopia&A=PinkHoodie&D=2024-03-31&F=2&O=Elimination&T=Over-enthusiastic_Arrows


### ´´hex´´
V=hex

W=3x3x3&L-E=M7M5&L-R=M4M7M1M2&L-U=M4M7&L-W=M4M2M5M1&SSE=24EUEREULWLUEREULULWDWDWLUEULWDWDRDWDREUERDWDR&V=hex&G=myopia&A=PinkHoodie&D=2024-04-04&F=1&O=Hyperopia+Hex&T=Hexyperia


## Acknowledgements and Changes

**2022-09-09** A word of thanks to @Jankonyex and @BenWoodley for kindly allowing their original puzzles to be listed here, and to @BenWoodley for feedback on this implementation that led to better arrows.
**2022-09-10** Thanks to @dohz for highlighting that the "visit every dot" constraint was not actually part of the original myopia, for making a puzzle, and for suggesting all [myopia] subpages be consolidated in this one.
**2022-12-17** @BenWoodley designed the **hyperopia** variant, which prompted an update to this page (2023).
**2023-05-16** All myopia variant pages were removed and all puzzles moved to this page
**2023-07-21** The hyperopia arrows were redesigned to fix an issue with the rendering of the arrow buttons - thanks @direkrow!
**2023-07-30** Changes with huge thanks to @direkrow:
	- Further redesign of all arrows to improve legibility at smaller resolutions
	- Shading aux marks added
	- arrows in multiple directions can be added/cleared simultaneously (this required a reencoding of all puzzles)

**2023-08-06** Line highlighting was disabled, since it was more distracting than informative. At the same time, small dots were added to mark incorrect directions lacking an arrow - thanks @EliDoris, and others who have hinted at that in past!
**2023-08-08** Added classic sets by @direkrow and @Rubrica, plus a reference to hypermetropic pentominos (@dohz, @menderbug), and added line colour variegation as well. Thanks everyone!
**2023-11-20** Myopia and Hyperopia added as standalone variants, for square grids
**2024-03-01** Neatly [modernised panels|../panels#modern] were crafted by @EliDoris. Thank you!
**2024-03-10** Variants ´´myopia´´ and ´´hyperopia´´ now fully compatible with [Yajilin] and any other ´´full´´ genres (@AnuragSahay)
**2024-03-11** A two-puzzle set was kindly shared by @AnuragSahay - thank you!
**2024-04-01** Local variant ´´elimination´´ by @PinkHoodie was added
**2024-04-04** [Myopia] arrows extended to ´´hex´´, experimentally (please report any slowness or bugs)
**2024-04-05** Besides 2 classics, @PinkHoodie made a ´´hex´´ and a ´´elimination´´ [Myopia] - thank you!
**2024-04-24** A colorisation problem on the ´´hex´´ grid, reported by @PinkHoodie and @EliDoris was corrected (cause: misallocation of segment styles due to numeric snapping error).
**2024-11-16** :::puzzletters @PinkHoodie sent 1 [myopia] (classic) puzzle - thanks!